2005 Audi A4 / S4 Audi A4 / S4 2005

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2005 Audi A4 / S4 repairs by problem area

Engine (49%)

Transmission and Drivetrain (7%)

Brakes and Traction Control (2%)

Suspension and Steering (12%)

Electrical and Air Conditioning (20%)

Paint, Rust, Leaks, Rattles, and Trim (5%)

Other (5%)

Chart based on 475 repairs.
See TSBs and recalls for the 2005 Audi A4 / S4.

2005 Audi A4 / S4 repair cost distribution

$2500+ (8%)

$1000 - $2499 (14%)

$500 - $999 (17%)

$100 - $499 (30%)

< $100 (32%)

Worried about potential repair costs? An extended warranty can provide peace of mind.

Chart based on 333 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2005 Audi S4 4dr Wagon

340-horsepower 4.2L V8 6-speed shiftable automatic AWD

Audi S4 in Denmark
Oct 2012 - Mar 2014
Jan 2013 Aux cooler pasenger side changed due to leaking. 
Audi S4 in South Carolina, United States
Nov 2008 - Apr 2016
Oct 2008

40000 mi
Passenger Window Regulator New Window Lock Switch New Front Upper Control Arms New Glove Box Door 
Jun 2009

43000 mi

US $28
Hood strut failure. Ordered new hood strut and installed. Problem solved. 
Oct 2009

45000 mi

US $300
A/C Compressor malfunction. Was operating intermittantly, repaired under CPO Passenger Control arm replaced under CPO 
Apr 2010

47000 mi

US $800
Replaced serpentine belt, pulley and tensioner Replaced valve cover gaskets 
Apr 2016

64000 mi

US $135
Replaced valve cover gaskets, air filter and cabin filter 
Audi S4 in Washington, United States
Apr 2011 - Aug 2013
Jun 2011

75000 mi

US $250
Intermittent starting problems due to faulty engine speed sensor. Repair pending approval by extended warranty provider. valve covers leaking oil. Also peeling and blistered paint. Extended warranty provider denied coverage because leakage "minimal," so not fixed. Upper radiator hose leaking coolant. repaired after approval for repair by extended warranty provider. 
Jul 2011

75700 mi
Crank position sensor replaced  Window washer fluid began leaking. Determined leak was from faulty pump. Pump replaced. 
Dec 2011

82000 mi

US $110
Replaced weak battery 
Aug 2013

106000 mi

US $700
check engine light, engine began misfiring. Diagnosed as failed plugs and replaced all 8 spark plugs. Replaced valve cover gaskets to address worsening oil weeping. 

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2005 Audi S4 4dr Wagon

340-horsepower 4.2L V8 6-speed manual AWD

Audi S4 in Netherlands
Jun 2013 - Jul 2015
Nov 2013

99200 mi

€450
part of wiring loom to ecu needed replaced water damage 
Jul 2015

110980 mi

€5000
cam timing out, replace a whole bunch of parts, engine removal required to complete 
Audi S4 in Minnesota, United States
Sep 2008 - May 2015
Mar 2010

54000 mi
Wiper linkage frozen at one of two pivot points. 
Aug 2010

58000 mi
Coil pack failure, all coil packs replaced under recall notice. Car was due to go in for the recall 7 days later, but one coil pack decided to fail prior to the repair appointment. 
Apr 2011

66000 mi
Wiper mechanism frozen at one of the two pivot points. Removed assembly from car, disassembled & lubricated, and reinstalled back into car. 
Jul 2011

67000 mi
A/C blows hot air all of a sudden. Shop checked system, plenty of R134 in system. Shop not sure what the problem is, need to bring car back for further diagnostic work. 
Aug 2011

68000 mi

US $200
A/C was still not working properly. Took to dealer as previous mechanic at non-Audi shop felt there was something wrong with the system (and not just low on R134a). Dealer could find no issues other than low R134a level. 
Sep 2012

81000 mi

US $250
Airbag light on, replaced one of the passenger side airbags. 
Dec 2012

84000 mi

US $3700
Flywheel defective, made engine vibrate. Dealer replaced flywheel, clutch, bearing and slave cylinder. 
Oct 2014

94200 mi

US $400
Power steering hose burst, hose was replaced. 
Audi S4 in Texas, United States
Jul 2009 - Dec 2011
Nov 2009

88000 mi

US $100
the driver window regulator (window stopped rolling up) 
Mar 2010

95000 mi
seat heaters did not work 
Jan 2011

108900 mi

US $300
Replace valve cover gaskets (leaking bad), replace serpentine belt and related components as preventative maintenance. Replace starter (intermittent failing). 
Aug 2011

111000 mi

US $1200
Replace all 4 front upper control arms. Also required the bearing carrier on the driver side to be replaced due to a heavily corroded pinch bolt. replace all 4 front upper control arms 
Audi S4 in Ontario, Canada
Jul 2014 - Jul 2015
Sep 2014

73160 mi

C $240
Blown power steering return line. 
Mar 2015

80600 mi

C $2875
Clutch, flywheel, clutch release bearing replaced. Replaced with B7 parts, as they are considered an upgrade on a (B6) S4 with higher clamping load and a slightly lighter flywheel. 
Jun 2015

83080 mi

C $100
Power steering pump whining due to Wrong type of fluid used during line repair last fall. Flushed power steering system with proper fluid and filled with correctly specified fluid. 
Jul 2015

83080 mi

C $600
Replaced left and right front upper control arms. Rubber bushings were worn out. 
Audi S4 in Virginia, United States
Jun 2014 - May 2015
Apr 2014

89000 mi

US $1000
Fuel Pump 
Jun 2014

95000 mi

US $65
Check Valve (Y-Valve) 
Jul 2014

93000 mi

US $2125
Timing Components/Adjuster Valve stem seals. Clutch/PP replaced Valve Stem Seals Timing Components 
Aug 2014

93000 mi

US $3500
When replacing valve stem seals, we noted that my exhaust valve couldn't hold pressure. Led us to do a compression and additional leak down test. Then confirmed bent exhaust valves, had to rebuild my cylinder heads. Cylinder Heads 
Sep 2014

94000 mi
Bad tensioner Bad Tensioner 
May 2015

96000 mi

US $150
Crank Position Sensor? 
Audi S4 in California, United States
Sep 2010 - Jun 2018
Nov 2010

65000 mi

US $1600
Front passenger head light would fail after 1 to 2 hours. This is a failure mode of a bad Xenon headlight. 
Jun 2011

70000 mi

US $1100
Replaced Full set of control arms. Boots in bad shape, the Repair shop said. 
Mar 2012

74000 mi

US $400
Front passenger wheel bearing wore out Drivers side sun visor became lose. 
Jan 2013

83000 mi
Recharged the AC but still doesn't blow very cold. Probably needs more work. Slight smell of coolant when heat is on. 
Dec 2013

92000 mi

US $1100
Valve cover gaskets need replacing Hatch latch does not open when sun is shining on the hatch. replace servo, didn't fix second replacement replaces another switch 
Apr 2015

100200 mi

US $1000
Oil gasket in V of engine was leaking. Need to take off throttle body replace oil gasket 
May 2015

101000 mi

US $220
Every year I need to get my AC recharged. The shop has looked for the leak for the last 4 years and has never found, so I will go in to the shop in late spring and get a recharge. 
Jul 2016

106300 mi

US $1400
Both lower front radiators developed leaks and needed to be replaced. 
Sep 2016

108000 mi

US $3
Hose broke off from windshield washer fluid bottle 

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2005 Audi S4 4dr Sedan

340-horsepower 4.2L V8 6-speed shiftable automatic AWD

Audi S4 in Texas, United States
Sep 2010 - Jun 2011
Oct 2010

68000 mi
High pressure steering hose failed, had to be replaced. $120 in parts, $230 in labor. Pass cat replaced under emissions warranty. 
Apr 2011

76000 mi

US $45
Front passenger window regulator failed. Cabling found broken and frayed during replacement. 
Audi S4 in California, United States
Dec 2012 - Jun 2018
Jan 2013

67300 mi
Both CV boots were torn 
May 2015

67000 mi

US $400
Both front O2 sensors showed varied fuel trims 
Oct 2015

68200 mi

US $55
Coolant overflow tank developed a small crack at the top and was leaking coolant/steam after short drives, replaced coolant tank with Genuine Audi unit at a cost of $55 shipped. 
Sep 2016

70000 mi

US $6
Upper coolant flange failed, part replaced 
Audi S4 in California, United States
Jul 2010 - Jul 2011
Aug 2010

76000 mi
Replace compressor. replace compressor 
Mar 2011

84000 mi
Driver seat heater failed. New heater grid replaced under warranty 
Audi S4 in Montana, United States
May 2011 - Oct 2011
Sep 2011

95000 mi

US $360
Replacement of Crankshaft Position Sensor. Intermittent no-start condition and a P0322 ECU code. 
Audi S4 in Wisconsin, United States
Oct 2010 - May 2012
Feb 2011

76000 mi

US $400
Power steering hose cracked and lost all fluid instantly. $100 hose, and $300 labor 
Audi S4 in Illinois, United States
May 2009 - May 2013
Jun 2009

44500 mi

US $220
Replaced a Coil Pack 
Jul 2009

45300 mi

US $1000
Air Bag Light on-Replaced Air Bag Sensor, Leaking Sealant/Coolant Gasket, Replaced Tailight bulb, Performed 45,000 maintenance sErvice with brake flush. 
Dec 2009

47000 mi
Dealer replaced seven coilpacks due to recall. 
Sep 2010

51000 mi

US $550
Replaced wiper linkage mechanism after wipers froze. 
Jun 2011

57000 mi

US $300
Passenger front window regulator not working 
Audi S4 in North Carolina, United States
Mar 2010 - Jul 2010
Jul 2010

62000 mi
Water pump replacement pending when sold. It was leaking a small amount of coolant, about a 3-4 oz. per week. 
Audi S4 in New Jersey, United States
Sep 2012 - Apr 2013
Apr 2013

75000 mi

US $1000
Control arms 
Audi S4 in Maryland, United States
Mar 2009 - Mar 2012
Jan 2009

57000 mi

US $500
Replace the front sway bar endlinks. 
Feb 2012

115000 mi

US $960
Power steering failed. It was the result of the return hose from the steering rack to the pump. Hose replaced. 

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2005 Audi S4 4dr Sedan

340-horsepower 4.2L V8 6-speed manual AWD

Audi S4 in Maryland, United States
Mar 2009 - Mar 2010
Jun 2009

44000 mi

US $440
Headlight sensor was bad. Replaced rearview mirror. 
Audi S4 in Iowa, United States
Aug 2010 - Dec 2016
Aug 2013

93000 mi

US $350
Driverside window glass would not rise up. 
Apr 2014

97000 mi
Door window switches, locks, sensors on driver's not working 
Audi S4 in Virginia, United States
Jul 2013 - Dec 2016
Aug 2013

98000 mi

US $1428
Slow loss of engine coolant, but no drips or puddling. Turned out to be passenger side auxiliary radiator was coming apart at the seems, so had it replaced. Check engine light coming on, then going off a few days later. Trouble codes were for misfire in cylinders 1 & 2. Ignition and Fuel systems both checked out fine, but exhaust check showed passenger side catalytic converter was very clogged. car in to dealer for 95K mile service check. They found worn out upper control arm bushings on passenger side. Estimate for replacing was $1383. They said would not pass VA state inspection, so recommended to replace. car into dealer for 95K mile service. They found DTC's for failing radiator fan control module. However the car has not been running hot or giving any indication of issues with cooling fan. Dealer estimate of $703 to replace. 
Sep 2013

98000 mi

US $275
power steering hose ruptured between cooler and steering rack. Obtained replacement hose myself and performed the work at a friends garage. Upper control arm bushings badly deteriorated. Flagged as an issue on annual safety inspection. Replaced all 4 upper control arms (both sides) for $300. Work done by owner at a friends garage. 
Oct 2013

98000 mi

US $2200
passenger side down pipe / catalytic converter severely clogged, causing DTC's and bad engine misfiring. Replaced entire exhaust system with stainless after market system for price of just the 1 factory down pipe. reverse lights not working, replaced reverse light switch at the 6MT transmission. 
Nov 2013

98000 mi

US $30
Plugs were badly fowled due to clogged down pipe on passenger side. The exhaust system had been replaced but afterwards the engine still did not run smoothly, so all spark plugs were replaced, which fully resolve the issue. 
Jun 2014

105000 mi

US $140
Front Driver side window regulator went out. I was able to get a replacement part online and performed the repair myself. 
Mar 2015

114000 mi

US $180
Badly worn lower control arm bushings, driver side. Replaced both lower control arms, drivers side. 
Apr 2015

114300 mi

US $1800
total clutch / pressure plate failure, which required replacement of both as well as flywheel. Driver's side 1/2 shaft / drive axle had worn CV joints and torn CV boot. Replaced entire 1/2 shaft. 
Nov 2016

131000 mi

US $575
CV boots on passenger side split wide open, slinging great all over the place... Axle as a whole was fine, but the cost of replacing just the boots compared to a new shaft was not much different, so opted for the new shaft assy. 
Audi S4 in Texas, United States
Aug 2016 - May 2017
Sep 2016

136000 mi

US $180
Severe shaking from engine when accelerating, CEL. Was only a spark plug causing a misfire, throwing the CEL. Replaced all spark plugs. 
Audi S4 in New Jersey, United States
Apr 2010 - Jul 2010
Jul 2010

110000 mi

US $1800
AC clutch seized. Replaced bent control arms and various bushings. When sold the driver door handle would sometimes not work from the outside. 
Audi S4 in Kentucky, United States
Mar 2010 - Sep 2011
Oct 2010

50500 mi

US $110
Drivers' side window regulator failed. New regulator installed 
Mar 2011

54000 mi
Headlights were wet inside. Sealed the adjustment screw with silicone. 
May 2011

56600 mi

US $540
High pressure hoses & seals of Power Steering were leaking a lot. After starting the (cold) motor, it rattled for about 2-3 seconds. Did an oil & oil filter change and changed from 5W30 to 5W40. After starting the (cold) motor, it rattled for about 2-3 seconds. Did an oil & oil filter change and changed from 5W30 to 5W40. Power steering system was leaking. Hoses and seals have been replaced. 
Audi S4 in Illinois, United States
Mar 2008 - Jul 2012
Jun 2008

29405 mi
anti-rattle clips were squeaking. replaced under warranty. 
Sep 2008

33214 mi
driver's switch for a rear window stopped working. switch replaced under warranty. 
Oct 2008

35159 mi
headlamp assemblies fogged up. replaced under warranty. 
Mar 2009

41315 mi
windshield wiper motor seized. replaced under warranty. 
Audi S4 in Illinois, United States
Nov 2010 - Dec 2011
Jun 2011

81000 mi

US $19000
Engine and clutch replacement. Engine had a crack in cylinder wall 1. Clutch replaced while engine was replaced as preventitive. No previous clutch failure. 
Audi S4 in California, United States
Nov 2014 - Mar 2015
Dec 2014

104000 mi

US $600
brake master cylinder failure 
Audi S4 in Rhode Island, United States
Jan 2012 - Apr 2012
Feb 2012

90700 mi
dealer tried the cam-position sensors and the clutch sensor. turned out to be the starter 
Audi S4 in California, United States
Aug 2014 - Nov 2014
Oct 2014

104000 mi

US $20
coolant expansion tank hairline fracture and leak 
Audi S4 in Alberta, Canada
Apr 2009 - Feb 2011
May 2009

56420 mi
Exessive oil consumption, car needs a new short block according to Audi. Audi has denied warranty but dealer paying since problem documented and started at 41k. 
Jun 2009

56420 mi

C $2000
excessive oil use, engine replaced. 
Jul 2009

60140 mi

C $1000
AC failed, requires new compressor $1400 item, plus costs of a dryer. http://audiwarranty.blogspot.com CEL codes P2097 Description: Post catalyst fuel trim system too rich P2098 Description: Post catalyst fuel trim system too lean audiwarranty.blogspot.com Car brought to a private repair shop for service, replaced a part of the AC unit, but problem persists, car needs a new AC compressor 
Sep 2009

61380 mi
Dealer has not been able to diagnose the problem, car still throwing codes after 200 to 400kms of driving. See my blog at http://audiwarranty.blogspot.com 
Nov 2009

61380 mi
Problem still ongoing, now starter is failing, that will be next repair. http://audiwarranty.blogspot.com 
Dec 2009

63240 mi
New A/C compressor. 
Jan 2010 Car would not brake, shop had bled brakes but not topped up master and as a result brakes did not work well. Did job myself, took a couple hours to bleed all 4 corners. Starter failure, car would not start for a long time when cold, replaced clutch switch, checked battery, then replaced starter problem solved. Actuator was stuck open and car would not come up to temperature, shop replaced faulty actuator problem solved. possible cause because car was apart for a long time waiting for short block at dealer for oil consumption. 
Apr 2010

65300 mi

C $800
HVAC pressure switch failure and system leak 
Aug 2010

66640 mi

C $400
Failed crankcase regulator valve, caused oil leak from valve cover gaskets. Replace regulator will wait and see if valve cover gaskets need to be replaced. 
Audi S4 in Wisconsin, United States
Apr 2009 - Oct 2009
Apr 2009

43000 mi
The windshield wiper transmission/motor went out and needed to be replaced. 
May 2009

44000 mi

US $50
Power steering hose broke. Lots of labor involved in fixing 
Audi S4 in Delaware, United States
Mar 2010 - Apr 2018
Aug 2010

31500 mi
Car needs a new AC compressor A/C condenser replaced 
Sep 2010

34000 mi
Plastic part that surrounds fog light fell off. Took part to dealer and was reattached in minutes with a new fastener that had broke. 
Jan 2011

US $50
Burning oil odor - valve covers replaced under warranty. Driver seat heater not working. Seat heating element was replaced 
Nov 2011

39300 mi

US $100
Window regulator was broken. Covered under Audi Pure Protection Gold Warranty 
Sep 2012

46000 mi

US $400
Glove box door was broken and had to be replaced. 
Nov 2012

47100 mi

US $500
Mass Flow Sensor had to be replaced 
Dec 2013

57000 mi

US $800
Power steering cooling return line broke. 
Jul 2014

59200 mi

US $1000
Replaced upper control arms - all 4 Crank position sensor replaced 

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2005 Audi S4 2dr Convertible

340-horsepower 4.2L V8 6-speed shiftable automatic AWD

Audi S4 in Illinois, United States
Sep 2010 - Apr 2015
Apr 2011

44000 mi
passenger window does not operate with all windows switch. 
Jun 2013

55000 mi

US $100
replaced ECM relay 
Apr 2015

51000 mi

US $1200
conv. top storage compartment. broken piece of plastic . had to order compleete trunk kit $560.00 ... oil leak 
Audi S4 in Delaware, United States
Dec 2012 - Jan 2014
Jan 2014 Glass separating from convertible top. Was told it was a common issue 
Audi S4 in Washington, United States
Sep 2010 - Jul 2018
Sep 2010

26000 mi

US $300
Engine has whine/whirl sound. Dealer acknowledged but cannot fix. Does not downshift on incline in drive; RPM's will drop below 1,000. Have to manually downshift or engine lugs. Sport mode car will not up-shift until RPM's exceed 4K. 
Jun 2011

31000 mi
4.2 liter motor makes terrible grinding noise when starting. Audi Tech Bulletin advises this is normal and caused by a slow adjusting camshaft chain adjuster. Problem so bad no dealer will trade, and, no buyer will purchase car. 
Oct 2011

32000 mi
Loss of perfromance, would not shift out of 1st gear, stability control intermittent, no transmission safety switch (could shift into gear without pressing brake). Sensor replaced. 
Mar 2013

41000 mi

US $550
Replaced valve cover gaskets 
Feb 2017

51000 mi

US $2400
Upper Control Arm busings Right and left rear CO2 sensors 
Audi S4 in Illinois, United States
Apr 2010 - Oct 2013
Apr 2011

89500 mi

US $1900
power steering failed, lots of noise, hard to steer. Towed to shop. Told the steering rack was leaking. Worst case scenario. 
Dec 2011

99000 mi

US $180
windshield wiper drive mechanism broken, replaced shaft 
Nov 2012

105500 mi
driver front wheel bearing made noise, needed replacement 
Sep 2013

113000 mi

US $350
Serpentine belt failed due to oil leak on engine cam covers. Doing that fix leter. 
Audi S4 in Illinois, United States
Mar 2009 - Sep 2009
May 2009

45000 mi

US $85
Tension strings for soft top needed to be replaced on both sides. 
Aug 2009

49000 mi

US $85
Replaced coilpack 
Audi S4 in California, United States
Jun 2010 - Jul 2018
Jul 2010

70000 mi

US $300
various hoses were leaking oil 
Feb 2011

77000 mi
The front air dam under the engine came loose and was dragging. My mechanic fixed it at no charge. 
Dec 2011

90000 mi

US $500
Replace valve seals Fuel valve at gas tank failure 
Nov 2012

102300 mi

US $1521
Power steering hose broke and was replaced Driver side axle shaft failure 
Mar 2013

104000 mi

US $275
Replace hood strut Convertible top not operational. Diagnosed as locking system. did not repair. 
Oct 2015

104000 mi

US $300
Battery replace along with oil change. Other items needed fixed but the dealer was asking for my first born and she wasn't willing so I found a great independent shop. 
Nov 2015

104300 mi

US $5000
Had a coil over system installed along with new sway bars and control arms. Car needed an update and control arm bushings needed replacement. Locking mechanism of convertible top failed and had to be replaced 
Dec 2015

104000 mi

US $1750
Hood and trunk lid paint oxidized and needed repainted. Additional touch ups done and some custom work. 
Sep 2016

106000 mi

US $3900
Fan replaced Motor mounts Serpentine belt replaced 
Jan 2017

106000 mi

US $400
Car wouldn't start. After a while it would start and run for a while, then it would just shut down. Some type of small electrical part that malfunctioned. 
Apr 2017

106000 mi

US $1000
possible catalytic converter failure, has to go back in to further diagnose 
Jun 2017

107000 mi

US $2900
Catalytic converters were replaced. I went with CARB approved Magnaflow after market products Control arms and rubber bushings were replaced. 
Jul 2018

108000 mi

US $3000
Replaced valve covers Needed 3 liters of fluid. Can't find any leaks. First time we have put fluid in. Still don't see leaks after a couple of weeks. New OEM clamps and hoses put in along with a coolant temperature sensor because everything apart already. Unbeknownst to me, a previous mechanic had replaced the OEM clamps and hoses with non-OEM items. My current mechanic noticed some wear and suggested replacement, especially with OEM. 

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2005 Audi S4 2dr Convertible

340-horsepower 4.2L V8 6-speed manual AWD

Audi S4 in Alberta, Canada
Dec 2009 - Feb 2015
Jan 2010

48360 mi
Starter motor not working properly. Memory switch for recalling position of driver's seat had to be replaced. 
Dec 2010

52700 mi
Crankcase ventilation valve replaced to resolve excessive oil consumption and leak from one head gasket. 
Feb 2011

53940 mi
Mild oil leak from headgasket, not severe enough and problem may be resolved because of replacement of crankcase ventilation valve. 
Mar 2011

55180 mi

C $1100
Head gaskets in both banks of cylinders were replaced to correct oil leakage. 
Audi S4 in Massachusetts, United States
Mar 2008 - Dec 2016
Apr 2010

54500 mi
replaced all ignition coils 
Apr 2011

63300 mi

US $700
alternator belt & tensioner alternator belt & tensioner 
May 2014

95100 mi

US $390
Low oil pressure warning light came on due to faulty switch. 
Jun 2015

102000 mi

US $5200
A/C compressor, HVAC hoses,  valve cover gaskets, thermostat, radiator hoses, misc gaskets, drive belt 
Audi S4 in Ohio, United States
Sep 2011 - Jan 2013
Jan 2013 Rear windshield coming unglued. 
Audi S4 in California, United States
Jun 2012 - Jul 2012
Jul 2012

62000 mi

US $300
Replaced coil packs again after getting misfired (even though the car was already running the new 'revised' packs - version T.) The packs were about 18 months old. 
Audi S4 in Pennsylvania, United States
May 2012 - Jun 2018
Sep 2015

61000 mi

US $2700
Replaced entire convertible top because original rear window fell out and cannot be glued back in place. Also happened to our previous Audi TT. Bought aftermarket top with stitched in window, not an Audi part! 
Jun 2017

69000 mi

US $6000
Corrected the known design flaw in the hydraulic cam chain tensioner and chain guides. Absent corrective action, complete engine failure ($12k) could otherwise result anytime between 55k and 130k miles. Also had a new clutch installed while the engine was out of the car. 
Nov 2017

71110 mi

US $748
The ignition coil went bad on cylinder #8. Would have cost $278 to do just that one or, $748 to do all eight. I figured this first one was a domino and that the others would follow so we opted to be preemptive and do them all. 

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2005 Audi A4 4dr Wagon

turbocharged 170hp 1.8L I4 6-speed manual AWD

Audi A4 in Oregon, United States
Sep 2009 - Apr 2018
Oct 2009

88000 mi
Ignition coil packs failed on me - fourth one in two years. 
Dec 2009

90000 mi
The pressurized cylinder which keeps the hatch open on the wagon ripped out of the steel mount on the D-pillar. 
Jul 2010

96300 mi

US $150
Car was pulling to the right. Alignment didn't help, so adjusting the steering rack on my own seemed to help a bit. 
Jun 2011

108000 mi
Drivers window switches popped down into the door. Had to take apart door to fix. 
Apr 2012

117300 mi
stuttering upon hard acceleration 
Sep 2012

123000 mi

US $12
Small coolant leak 
Dec 2012

127000 mi

US $760
Hoses were disintegrating and falling off. 
Jan 2013

114200 mi

US $20
Windshield washer pump was leaking 
Mar 2014

143000 mi

US $70
Valve cover rubber gasket seal replacement as oil was leaking into the spark plug holes. 
Dec 2015

162000 mi

US $450
Coolant leak at the front of the engine. Also changed timing belt at the same time as it was in the same area. 
May 2016

165000 mi

US $50
Radiator hose connector failed causing coolant to leak profusely 
Jun 2016

166000 mi

US $10
Coolant leak at the rear coolant flange and plastic coupler to the heater core. It was leaking about a cup a day, and I thought It was just loose, so I tightened the flange against the block as well as the plastic coupler. It still leaked. 
Jul 2016

167000 mi

US $10
After the second repair in June, in July I replaced the plastic coupler between the rear coolant flange and the heater core. That fixed the problem. I believe the new flange I initially bought was of the wrong size causing the leak. Success! 
Sep 2016

172000 mi

US $100
Replaced engine mounts. They were leaking fluid. 
Jul 2017

176000 mi
Check engine light came on for P0133 oxygen sensor. I reset it and it hasn't come back this month yet. 
Apr 2018

182000 mi
Leaking cooling system yet again from the back of the engine. The leak slowed, but not fully stopped. Will need to attempt again. 
Audi A4 in Alberta, Canada
Jun 2010 - Jul 2011
Aug 2010

74880 mi

C $100
glovebox hinge 

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2005 Audi A4 4dr Wagon

turbocharged 170hp 1.8L I4 5-speed shiftable automatic AWD

Audi A4 in Nevada, United States
Mar 2010 - Mar 2013
Apr 2010

28000 mi

US $312
repair fluid leak in windshield washer fluid reservoir 
Jun 2010

29000 mi

US $75
replace defective daylight running light bulb 
Sep 2012

35000 mi

US $300
hard downshift from 2 to 1. software reprogramming to fix problem 
Audi A4 in North Carolina, United States
Mar 2008 - May 2013
Oct 2008

50000 mi
Driveshaft seal replacement (at transaxle) 
Dec 2008

52000 mi
Replaced all ignition coils. 
Apr 2010

64000 mi

US $100
electronic stability control fault light--repaired by replacing brake line. 
Jun 2010

65000 mi
Side impact airbag fault tripped the dashboard "air bag" light 
Mar 2011

70000 mi

US $2000
Replaced defective seals and vacuum hoses 
Dec 2012

93000 mi

US $800
Temp sensor and cracked cooling control housing had resulted in lost coolant Significant ongoing oil loss. compression test passed. Crankcase ventilation/pressure system failure suspected. 
May 2013

98000 mi
Compressor failure; needed replacement Still losing oil when last had it. 

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2005 Audi A4 4dr Wagon

220-horsepower 3.0L V6 5-speed shiftable automatic AWD

Audi A4 in North Carolina, United States
Nov 2009 - Jun 2011
Feb 2010

49000 mi

US $100
Transmission seal replaced 
Audi A4 in California, United States
May 2008 - Jun 2011
Sep 2008

41000 mi
Drivers window regulator failed. 
Mar 2009

47000 mi
Leaking headlamp cluster, rough cold start resulting in one time "Check Engine Light" which reset itself upon restarting. Replace randomly operating sunroof switch. Repair "lazy" retracting driver's side seat belt. 
Apr 2009

49000 mi
Engine Coolant began leaking all over garage floor. Car was immediately driven to local Audi dealer. Same problem of Trip 1: Engine coolant leak that was unsuccessfully diagnosed/repaired on the original trip to the dealer. 
Nov 2009

53800 mi

US $50
Leaking rear output transmission shaft and left front axle seal. Driver's window regulator failed..again. 
Dec 2009

55000 mi
Ignition coil failure. Replaced all six ignition coils. 

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2005 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 6-speed shiftable CVT FWD

Audi A4 in Florida, United States
Dec 2011 - Jul 2017
Jan 2012

US $2095
Thermostat, both electrical fans and control unit replaced. 
Apr 2013

61000 mi

US $2640
CVT was beginning to fail. Replacing CVT transmission. 
Oct 2014

75000 mi

US $1935
Windshield wiper pump replaced. Coolant flange replaced. Valve gasket replaced. 
Dec 2016

98000 mi

US $1100
Both cooling fans failed AGAIN. Replaced.  Windshield washer pump failed. Replaced. Button on window master control unit. Replaced unit. Recharged AC. 
Jul 2017

103000 mi

US $360
Coolant flange replaced for second time. 
Audi A4 in California, United States
Sep 2009 - Nov 2014
Jul 2010

85000 mi

US $650
leaking engine mount left axle boot was ripped; replaced. interior overhead light rattled at speed. An anti rattle pad was inserted 
Apr 2011

89200 mi
valve cover and cam seals leaking; very minor oil leak so I won't repair now. upper control arm bushings are weak. 
Jun 2011

90000 mi
valve cover, cam seals, and broken hoses replaced to eliminate leaking oil and burning oil smell in interior. 
Oct 2011

96000 mi

US $150
Check engine light indicated that cooling system temperature sensor had failed. It was replaced. 
Nov 2012

106100 mi

US $650
Engine mounts replaced 
Jun 2013

110000 mi

US $975
leaky O rings; replaced O rings and added coolant A/C flap behind glove box opened intermittently; as a result A/C sometimes was fine, other times was only available on right side of car with outside temperature air blowing in on the left side. Flap replaced. left inside CV boot leaking. Boot replaced. 
Oct 2013

114500 mi

US $597
Flange on rear of cylinder head leaking coolant. Coolant flange replaced as well as temp. sensor and hose from flange to heater core. 
Oct 2014

125000 mi

US $70
Ignition coil died. I replaced three by myself (I had done another a few months ago). Took me 10 minutes. 
Nov 2014

125000 mi
upper control arm bushings weak, never replaced. 
Audi A4 in California, United States
Mar 2008 - Jun 2010
Jun 2008

64000 mi

US $150
ignition coil packs 2 of 4 failed. 
Jun 2010

84000 mi
A/C not blowing cold when idling when sold. 
Audi A4 in California, United States
May 2009 - Oct 2010
Jun 2009

70000 mi

US $2000
Car had issues with the MAF and O2 sensor 
Mar 2010

80000 mi

US $1400
Transmission Control Module failed, caused a check engine light. Covered under california emissions until 70,000 miles I am at 78,000. 
Oct 2010

84000 mi
Glovebox actuator was stuck and broke the lid. Antenna booster stopped working and no radio signal. They replaced the booster. 
Audi A4 in Florida, United States
Sep 2015 - Sep 2017
Nov 2015

115000 mi

US $150
trunk opener system leaks - oil. coolant low engine power 
Jan 2017

155000 mi

US $700
continuous coolant leaks, heated motor 

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2005 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 6-speed manual AWD

Audi A4 in New Hampshire, United States
Sep 2008 - Jun 2011
Oct 2008

48000 mi
Ignition coil on cylinder 1 was replaced. Cost $0.00 since it's under warranty. 
May 2009

65000 mi
Retractable Cup Holder issues. It wouldn’t open. DIY of 5 minutes with cotton swabs and WD40 to fix what was causing it to stick. The job fixed it, no issues since. 
Oct 2009

76000 mi

US $50
Leaking coolant flange, replaced by dealer under warranty, out of pocket cost $50. 
Nov 2009

78000 mi
HVAC issues, getting no heat from the car. Got it fixed at the dealer at no cost. Something regarding a locked vent not moving to control airflow; all fixed and have heat. 
Dec 2009

80000 mi
CEL Light went on for P0420 code. Replaced O2 sensor and had a vacuum leak and it fixed it. 
Feb 2010

85000 mi

US $50
Wiper linkage failed. EPC light came on causing failed attempts at starting the car and rough idle. 
Audi A4 in Colorado, United States
Aug 2009 - Mar 2010
Mar 2009

52000 mi

US $30
Replaced 1 Coil Pack 
Audi A4 in Saskatchewan, Canada
May 2009 - Jan 2010
Jan 2010

C $386
regular maintenance plus replacement of two engine coils 
Audi A4 in Massachusetts, United States
May 2008 - Jun 2011
Nov 2008

105000 mi

US $200
Two worn out control arms. 
Audi A4 in Virginia, United States
Nov 2010 - Jul 2012
Oct 2011

93500 mi

US $5000
Turbo blew 
Audi A4 in California, United States
Nov 2011 - Jan 2014
Dec 2011

72000 mi
Loud rattles from under the car, drivers side. I'd hear it at about 2500-3200 rpm's. Turned out to be a busted support rod connecting/supporting both mufflers. The rod was welded back together and the problem resolved. 
Feb 2012

75000 mi

US $250
Oil leaks found in driverway after vehicle purchase. Valve cover and tensioner gaskets replaced.  Passenger side motor mount replaced due to leak. 
Mar 2012

76000 mi

US $330
Worn coolant flange and o ring which was a result of a bad valve cover gasket that leaked oil down over the flange over time. Coolant temp sensor was also replaced. 
May 2013

92000 mi

US $442
Driver's side motor mount replaced due to leakage of all hydraulic fluid. I did not notice much driving, I saw oil spots in the driveway and took the car in since the timing belt was replace about 2 weeks prior. 
Audi A4 in Washington, United States
Aug 2010 - Jan 2011
Sep 2010

70000 mi

US $200
drivers side power window stuck, mechanism replaced 
Audi A4 in Ontario, Canada
Feb 2012 - Mar 2012
Mar 2012

89900 mi

C $500
Had to replace clutch-exploded into pieces 
Audi A4 in New Hampshire, United States
May 2010 - Sep 2011
Jun 2010

63000 mi

US $10
replaced leaking coolant bleeder screw 
Nov 2010

68400 mi

US $170
Timing belt,water pump and tensioners 
Audi A4 in Ontario, Canada
Apr 2011 - Jun 2013
Jan 2013

84940 mi

C $2200
throttle body, intake gasket, and exhaust gas hoses replaced. 

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2005 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 5-speed shiftable automatic AWD

Audi A4 in Georgia, United States
Jun 2007 - Jun 2011
Aug 2007

63000 mi

US $330
Drivers side window regulator failure and needed to be replaced. 
Sep 2007

64000 mi

US $50
Flemsy console arm broken and replaced. 
Oct 2007

65000 mi

US $300
Ignition coils and spark plugs replaced due to multiple check engine instances flagging cylinder misfires. (in the end valve cover seal) 
Jan 2008

71500 mi

US $300
Glove compartment door hinges break and have to replace whole door. 
Apr 2008

74000 mi

US $900
Seal on front axle, left side, bad and had to be replaced. 90% of total was labor costs. 
Jul 2008

76000 mi

US $330
Passenger side window regulator failure and needed to be replaced. 
Aug 2008

76500 mi

US $150
Gears in sunroof switch broken and needed to be replaced. 
Dec 2008

82000 mi

US $900
Seal on front axle, right side, bad and had to be replaced. Again, 90% of total was labor costs. 
Jan 2009

84000 mi

US $100
New spark plugs due to continued misfiring. (in the end valve cover seal) 
Apr 2009

88000 mi

US $700
Valve cover seal replaced because it was leaking to spark plugs causing previous failures. 
Sep 2010

117000 mi

US $400
Driver and Passenger Window regulators for the second time each. 
Dec 2010

121000 mi

US $500
Cooling fan and ac condenser fan replaced 
Mar 2011

126000 mi

US $2150
Thermostat and housing, $350 All vacuum lines under the intake manifold, $600 Crank Shaft Tensioner seal, $1200 
Jun 2011

126000 mi

US $60
PCV Valve 
Audi A4 in Pennsylvania, United States
Jun 2014 - Jun 2018
Dec 2015

151000 mi

US $300
replaced battery a month prior and new battery was not charging properly. Thought could be alternator. 
Jun 2016

161000 mi

US $2000
a/c compressor failed. replaced entire a/c compressor and serpentine belt 
Sep 2017

180000 mi

US $125
drive sensor replacement 
Dec 2017

183000 mi

US $1200
engine mounts replaced exhaust repair 
Jan 2018

183000 mi

US $900
timing belt, water pump and hoses 
Audi A4 in New Jersey, United States
Mar 2008 - Mar 2012
Aug 2008

42300 mi
Water Pump replaced under warranty. Pump was working but was making a noise. 
Nov 2008

46000 mi

US $400
A Coil Pack shorted and caused the check engine light to come on. Since the incremental cost was marginal I had all four coil packs replaced. 
Apr 2010

58000 mi

US $1200
Replaced Radiator due to pin hole leak.  
Audi A4 in Ohio, United States
May 2008 - Jan 2012
Oct 2008

41000 mi
Coolant leaked below minimum level. Coolant warning light on. Added water to system and drove to dealer. Pressure test found coolant flange seal leaking. Coolant flange seal replaced. 
Dec 2008

42000 mi
Drivers window grinding and not functioning. Cable came out of regulator. Left front electric window regulator removed and reinstalled. 
Jun 2009

46000 mi

US $50
Airbag light was on. Drivers side igniter upper limit exceeded. Drivers seat wiring harness for airbag repaired. 
May 2010

53300 mi

US $53
Air bag light came on for second time in a year. First time was wiring under driver seat. This time was wiring under passenger seat. 
Apr 2011

60200 mi
Dealership installed leaky oil filter during previous maintenance. Subsequent trip failed to identify source of leak. They determined on this trip and replaced the filter. 
Oct 2011

65000 mi

US $675
PCV valve was replaced. Caused rough idle and check engine light to flash Passenger door window regulator broken 
Audi A4 in Illinois, United States
Mar 2013 - Mar 2018
Jun 2016

78000 mi

US $3380
Water pump froze up, causing timing belt to skip, which, in turn, resulted in damage to 2 valves. 
Audi A4 in Colorado, United States
- Dec 2008
Apr 2007 Mileage unknown/Warranty Replace cup holder and front window motor 
Sep 2007 Mileage unknown warranty Coolant sensor replaced, ignition coils replaced 
Oct 2007 Mileage unknown/Warranty Thermostat replaced 
Jan 2008

39012 mi
Warranty Ignition coil replaced 
May 2008

40936 mi
Warranty Replace glove box door, replace cup holder, replace window regulator 
Jun 2008

42928 mi
Warranty Replaced coil TOWED 
Jul 2008

43276 mi
Replace air conditioner compressor , reinitialized window memory 
Oct 2008

51300 mi
Certified used car warranty Replace driver's door motor, replace sunroof potentiometer, replace fuel pump 
Dec 2008

51300 mi
Certified used car warranty Replace catalytic converter, replace fuel tank, replace coolant plug 
Audi A4 in Pennsylvania, United States
Dec 2014 - Sep 2016
Mar 2016

179000 mi

US $300
Car died on highway, got AAA to tow me, alternator was not charging the battery, battery. Changed alternator and battery. Car is back on road. 
Audi A4 in New York, United States
Oct 2010 - Apr 2018
Nov 2010

61000 mi

US $20000
front tires had outside wear, steering loose . 4 upper control arms needed to be replaced on front left and right wheels. 
Jul 2014

103500 mi
Engine speed sensor 
May 2017

117000 mi

US $200
AC compressor bearing was making a lot of noise. Had to replace AC compressor and new belt Accessory belt pully Tie rod end and inner. Both loose Throttle body electrical connector kept getting water in it some how. This was shorting out. Car would not have any power and stall if floored. Had to cut off old connector and splice in a new one. 
Apr 2018

118500 mi
Driver side front axle boot ripped leaking grease. Replaced axle with aftermarket. Exhaust leak at flex joint Front passenger side lower rear control arm Wipers moving very slow 
Audi A4 in Illinois, United States
Jul 2009 - Oct 2011
Oct 2009

53000 mi

US $3
Right rear tail light. 
Feb 2010

59000 mi

US $17
Head light repair 
Audi A4 in California, United States
May 2013 - Mar 2016
Feb 2014

129700 mi

US $453
Coolant flange at rear of engine needed to be replaced due to cracking. 
Apr 2015

142000 mi
Bad temp sending unit for coolant. 
Jan 2016

134200 mi

US $1000
timing belt, coolant leak: flange at the back of the engine was replaced. 
Audi A4 in Michigan, United States
Oct 2013 - Jan 2017
Jun 2015

145000 mi

US $3400
Cracked cylinder head 
May 2016

158000 mi

US $1900
Turbo went bad after wastegate stayed open, I hear this is a common problem for the 1.8t 
Jun 2016

159000 mi

US $449
Update: took my car to another shop and they found it was a clogged PCV valve and my breather hose was the problem not the turbo saved 1500 on the repair that the dealer quoted me for 
Jul 2016

160000 mi

US $750
Got me Cat replaced after CEL came back on still not sure if the problem is solved MPG has not gone back up, but only 1 day of city driving 
Nov 2016

166000 mi
My starter went out when I pulled into a Rest Area, car would not re-start had it towed to a local shop and they replaced it for 250 bucks, much cheaper than the Audi dealership, they do GREAT WORK for half the cost 
Audi A4 in Colorado, United States
Nov 2009 - Jun 2012
Sep 2011

91000 mi

US $400
crank shaft sensor need to be replaced. was intermittently stopping the car from starting 
Jan 2012

US $800
rear brakes 

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2005 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 5-speed manual FWD

Audi A4 in Texas, United States
May 2008 - Mar 2010
Jul 2008

59000 mi

US $50
Original turbocharger was going bad, & was replaced under certified pre-owned warranty without any further issues. 
Dec 2008

69000 mi

US $50
Coolant hose adapter was cracked. Power steering hose leak.  

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2005 Audi A4 4dr Sedan

220-horsepower 3.0L V6 6-speed manual AWD

Audi A4 in California, United States
Aug 2015 - Jun 2018
Sep 2015

124000 mi

US $550
Oil leak from valve cover gasket 
Feb 2016

131300 mi

US $150
Small leak on radiator, replaced it myself with aftermaket NISSIN radiator, direct fit and G12 Coolant 
Mar 2016

133000 mi
Leaking Driver side valve cover gasket. It was previously replaced by shop in Sept '15, and they replaced it at this visit free of charge under warranty. 
Jul 2016

138000 mi

US $600
Front Right wheel bearing making noise. Tried to replace but pinch bolt was sized to knuckle. So needed to buy a new Knuckle and did the upper and lower control arms, and tie rods while at it (bushings cracked). 
Aug 2016

139600 mi

US $45
Car would sometimes not start when hot. (Cranks over, but not start.) Replaced the crank position sensor. 
Sep 2017

143000 mi

US $225
Driver side valve cover replacement. Oil leak due to warped cover. 
Audi A4 in Massachusetts, United States
Jul 2009 - Jun 2011
Apr 2010

109000 mi

US $900
Defective headlamp sensor detector failure lamp intermittently lights up on lateral acceleration 
Audi A4 in British Columbia, Canada
Nov 2008 - Jun 2018
Dec 2008

34720 mi
3 coil packs needed replacing. Power steering noisy. Fluid flush performed and replacement power sterring hose ordered for installation in January, 2009. 
Feb 2009

36580 mi
Replaced power steering hose and checked system for leaks; topped up power steering fluid 
Mar 2009

37820 mi
Front right wheel bearing noisy and replaced. 
Aug 2009

40920 mi

C $100
Scheduled maintenance visit; Reported noisy front end; diagnosed cause - leaking seal on steering rack; problem resolution - replace steering rack under CPO warranty 
Jul 2010

50840 mi

C $100
Water Pump replacement and 100000 KM maintenance Rear diff seals leaking Valve covers seeping oil Power steering return hose weeping; power steering fluid low; replaced hose 
Feb 2013

74280 mi

C $3000
Control arm replacement Valve cover gaskets replaced 
Sep 2013

79360 mi

C $836
Front subframe welding repair for clunking noise CEL - misfire on cylinders 2,3,6; replaced colipacks 
Nov 2013

79980 mi

C $850
Clunking over bumps; replaced front swaybar bussings and front struts 
May 2015

90520 mi

C $300
G62 Coolant Temperature Sensor replaced. MIL indicated low signal for sensor. 
Nov 2015

94240 mi

C $600
Very noisy power steering when turning; not resolved on 1st visit Readdress power steering noise from pervious repair trip Engine misfiring - MIL ON; 4 coilpacks diagnosed as faulty. replaced all 6 coilpacks on engine 
Feb 2016

96680 mi

C $200
Nylon coolant tank hose connectoin broke off. 
Nov 2016

102160 mi

C $1250
Wishbone failure 
Apr 2017

107880 mi

C $500
Serpentine Belt Tensioner Replacement Replaced front brake pads and rotors 
Aug 2017

112220 mi

C $839
Front Passenger Window Regulator replaced 
Feb 2018

115940 mi

C $387
Battery 5yrs old 

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2005 Audi A4 4dr Sedan

220-horsepower 3.0L V6 5-speed shiftable automatic AWD

Audi A4 in Pennsylvania, United States
Sep 2013 - Jun 2018
Sep 2013

70000 mi

US $700
Rear coolant crossover pipe. 
Sep 2015

88000 mi

US $400
Crossover coolant pipe. Update, late October: already leaking again. "O"-ring going bad. It's about a 1-1/2 hour repair job for a $40 part and very tedious to get behind the engine block. 
Audi A4 in California, United States
Aug 2009 - Sep 2012
Dec 2009

65000 mi

US $30
One of the ignition coils failed. I was close to the dealership and was able to drive there. A total of four coils were replaced under manufacturer's recall. the remaining two coils had already been replaced under warranty. 
Feb 2010

67300 mi

US $650
Front suspension bushings worn out and replaced. Car was also aligned as part of this repair. 
Jul 2010

73700 mi

US $400
Power steering slowly leaks fluid into the steering rack. Excess fluid drained form bellows sealing the rack and fluid topped up again. R/H glovebox hinge failed. No real reason and not worth the cost of repairing. Living with the problem 
Feb 2011

86000 mi

US $2150
Oil leaks from camshaft covers and sump. Gaskets replaced. Leaking coolant line, the subject of a TSB is leaking. Repair requires expensive intake manifold removal to get at source of leak so I've decided to live with the problem. We've had unusually heavy rain here since December and the Xenon headlights fog up very heavily when it rains. It's always been a problem but the dealer tells me it's normal even though the light output is badly reduced. Audi won't fix 
Apr 2011

88000 mi

US $850
Fuel pump failed while car was on freeway. 
May 2011

89300 mi
Significant coolant leak from cross pipe located under intake manifold. Will live with problem for time being. 
Jul 2011

92000 mi
Major coolant pipe had become brittle and degraded from heat and was leaking. Why Audi choose to use short life span parts baffles me. Pipe is under intake manifold so a heavy labor charge to replace it.  
Oct 2011

99000 mi
Hood strut has completely failed. Not worth the cost of replacement bur annoying nontheless. 
Sep 2012

116000 mi

US $400
Front struts should be replaced. Quoted cost is $800 - $1050. Car has developed a bad oil leak from a crack in the upper sump. No known cause. Since the proper repair is an engine out job I'm investigating alternatives. JB Weld didn't work. 

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2005 Audi A4 2dr Convertible

turbocharged 170hp 1.8L I4 6-speed shiftable CVT FWD

Audi A4 in Iowa, United States
Mar 2010 - Dec 2013
Dec 2013

44000 mi

US $475
Right motor mount leaking fluid. 
Audi A4 in British Columbia, Canada
Sep 2009 - Jun 2018
Jun 2011

21700 mi

C $750
wheel bearings 
Sep 2016

39060 mi

C $900
defective fuel pump 
Oct 2016

39680 mi

C $3000
replaced transmission control module. The code for this appeared while it was already in the shop to have the crankshaft sensor replaced and actually made its presence known after the crank sensor had been done and was being test driven. 
Audi A4 in South Carolina, United States
Mar 2010 - Apr 2010
Apr 2010

48000 mi

US $5600
Car overheated. Long block replaced by dealer at owner expense at 49,000 miles (post warranty). Transmission was slipping and displaying a major error indication on the cluster. Quote was $2,700 for repair of sensor and linkage belt. This is the worst car I have ever owned. 
Audi A4 in Texas, United States
Dec 2008 - Feb 2014
May 2009

53000 mi

US $250
Check engine light came on, code was for new transmission, warranty co. asked to clear code and see if check engine light returned before replacing transmission. Check engine light came back on at 25 miles, the problem was not a new transmission, but a sensor, dealer ordered the part and I drove my car home to wait for it. The part came in, the dealer repaired it, the extended warranty paid 100%, less the $250 deductable. 
Jan 2011

66000 mi

US $450
Leaking valve cover gasket, fouled the spark plugs. Replaced valve cover gasket and engine breather hoses to oil separater which had crumbled apart during the gasket repair.  
Feb 2013

83100 mi

US $400
Check engine light came on, essentially needed a tune-up, new plugs, etc. and a lecture on using premium gas, NOT regular unleaded. 
Mar 2013

84000 mi

US $95
Took the car in for check engine light, re-set the check engine light, and the warning has not returned. They found a rattling brace and fixed it. 
May 2013

85000 mi

US $345
The dreaded intermittent electrical problem. With no rhyme nor reason the dash display goes dark, the A/C ceases to work and the radio turns off. Radio can be turned on again, but not the A/C. Shop replaced ignition switch, problem not fixed 
Dec 2013

89000 mi
Continuation of intermittent electrical problem plaguing car since March. Ran fault codes, found ect sensor @ 48c degrees, replaced, Installed new sensor in water neck flange at radiator, problem in instrument cluster, no repair attempted. AC head control unit had internal short circuit, shorting out the comfort system. Instrument cluster was having catastrophic communication problems. Faulty AC control head unit and instrument cluster were replaced and re-coded. "Econ" button was stuck on...no heat, no air-cond. just outside air coming through the vent. system. New instrument cluster needed to be re-programmed. I am taking the car back to the original shop to take care of the ongoing check engine light and the abs system randomly coming on, I anticipate the repair being done this month (Dec.) 
Jan 2014

82000 mi
Trip was to work on check engine light, abs brake light and traction light from previous trip, ec sensor was changed for the third time, to no avail, as soon as warning lights are cleared, they reappear.  Also, crimped wires from the trunk lid wiring harness are giving false brake light out warning lights....The Audi wiring harness is roughly $4200 for the part alone, so it will either be spliced to fix, or I will learn to live with it if I keep the car. 
Feb 2014

89000 mi
Check engine light still on, went to dealer discussed my options with the service tech, chose not to go through another round of diagnostic tests, traded the car in on a 2012 VW Eos. Crimped wires from the trunk lid wiring harness. 

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2005 Audi A4 2dr Convertible

220-horsepower 3.0L V6 6-speed shiftable CVT FWD

Audi A4 in California, United States
Aug 2007 - Dec 2015
Jan 2007

21405 mi
All ignition coils replaced. Warranty. 
Oct 2007

37740 mi
Brake light bulb and tail light bulb inoperable, removed and replaced. 
Apr 2008

47977 mi
Right side brake light open circuit, remained lit. Removed and replaced bulb. Driver side wiper not touching glass, spring broken, replaced. Actuator for locking gas door broken, replaced. Glove box popped open at high speeds, hinge fixed. 
May 2008

49160 mi
Ignition coil #5 replaced. Brake light switch defective, replaced, was causing burnt bulbs. 
Jun 2008

49973 mi
Transmission control module replaced. Engine felt sluggish. 
Jun 2009

67000 mi

US $2700
Water pump leak, replaced. At same time did timing belt (due at 65k anyway). Upper front and rear control arms bushings worn. Replaced. 
Aug 2009

73000 mi

US $600
Remove and replace control module for convertible top. 
Oct 2009

73000 mi

US $150
Remove and replace coolant tank due to leak. 
Dec 2009

77000 mi

US $387
CEL illuminated and flashing. R&R spark plugs and 6 ignition coils. 
Oct 2010

85000 mi

US $2250
Y-pipe behind engine cylinder block cracked and leaking coolant. Replaced. 
Feb 2011

88000 mi

US $3700
Cylinder 5 coolant weeping, engine rumbled on start to clear coolant. Cylinder head 456 warped (probably from factory) and heating and cooling exacerbated over time, making leak worse. Replaced head. 
Sep 2011

96000 mi

US $4000
Ecu was sending erratic signals to fan control unit, which burned out and caused car to over heat, also ruined secondary ac fan. Upper control arm bushings replaced. Ac compressor replaced 
Feb 2013

130000 mi

US $2750
Transmission Control Module, filter, fluid, and seals. 
Mar 2014

151000 mi

US $3600
Coolant sensor in rear of engine leaking. Power steering lines leaking for years. Finally replaced. 
Sep 2014

157000 mi
ABS and stability control lights intermittently on. Computer control module found faulty. Decided not to repair. 
Dec 2015

167000 mi
ABS module never repaired. The car had 160++k miles on it and worth a pittance at auction due to all the issues. Couldn't ethically sell the car private party, so we just dumped it at the dealer as a $500 trade in so I wouldn't have to deal with it. 

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2005 Audi A4 2dr Convertible

220-horsepower 3.0L V6 5-speed shiftable automatic AWD

Audi A4 in Texas, United States
Jan 2015 - Jan 2016
Feb 2015

40500 mi

US $200
traction control wasn't working 
Jun 2015

48000 mi

US $100
noisy when turned 
Dec 2015

57000 mi

US $300
the transmission was completely shot and was a full replacement 

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2005 Audi A4 / S4

Engine not specified

Audi A4 in Colorado, United States
Sep 2011 - Nov 2011
Oct 2011

78000 mi

US $3700
dual flywheel mass failure. 
Nov 2011

78000 mi

US $500
window motor failed. 
Audi A4 in Pennsylvania, United States
Jul 2011 - Sep 2011
Aug 2011

68000 mi

US $1000
Crossover pipe behind engine losing coolant. Parts were degraded to the point that they were leaking about a pint of fluid a week. Leak was the worst as the engine cooled. 
Audi A4 in Washington, United States
Nov 2011 - Jan 2012
Jan 2012

88000 mi

US $550
Starter replacement. Symptom: turning key to start, but no start, no sounds, no nothing. 

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2005 Audi A4 / S4 4-door

turbocharged 4-cylinder manual AWD

Audi A4 in Sweden
May 2010 - Jul 2018
Jul 2015

99200 mi

$35
Problem with crankcase poison sensor.(G28) 

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2005 Audi A4 / S4 4-door

4-cylinder automatic 2WD

Audi S4 in Singapore
Feb 2011 - Jun 2012
Mar 2011

48360 mi

$50
Ignition coil unserviceable on cylinder 3. Coils on all cylinders replaced 
Sep 2011

53940 mi

$500
electrical window motor on front left side u/s 

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2004.5 Audi A4 4dr Wagon

turbocharged 170hp 1.8L I4 6-speed manual AWD

Audi A4 in Arizona, United States
Mar 2007 - Apr 2009
Dec 2007

48500 mi
Right front inner CV Boot, Left rear outer CV Boot, Valve Cover Gasket. All covered under last days of warranty. (warranty expired 12/24/07) 
Jun 2008

51000 mi

US $85
Turbo inlet hose (aka TIP) torn and letting in un-metered air. Replaced with a spare. 
Sep 2008

54000 mi

US $64
Driver's front inner CV boot was torn. Shop replaced boot with new one. Engine speed sensor failed; new sensor ordered from dealership and self-relpaced. 
Mar 2009

57000 mi

US $725
3rd Gear synchronizer for manual transmission wore out. (Grinding in 3rd gear) Transmission removed, transmission rebuilt with new parts, transmission re-installed. All self-repair. Cost to repair includes cost of special tools purchased. 

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2004.5 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 6-speed shiftable CVT FWD

Audi A4 in Arizona, United States
Apr 2013 - Jun 2018
Jun 2013

54000 mi

US $150
Replaced original battery! 
Nov 2014

57000 mi

US $1550
Transmission output speed sensor bad. Replaced Transmission Control Unit. Dealer covered all but $200 since it was just a month out of the 10 year extended warranty. Replaced timing belt. It was 10 years old and cracked from the Arizona heat. 
Sep 2017

67000 mi

US $600
Car was intermittently overheating. Replaced thermostat assembly. 
Jun 2018

71 mi

US $1200
Replaced rear cooling manifold which was leaking, along with necessary hoses. 

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2004.5 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 5-speed manual FWD

Audi A4 in California, United States
Mar 2009 - Jun 2018
Apr 2009

52000 mi
fuel pump was making a loud humming noise which was diagnosed to come from the rear passenger side. dealer replaced it no problem, was recalled on 03 models so not surprising to see it happen on 04.5's window regulator broke so a new assembly had to be ordered. can be found for roughly $120 online from genuineaudiparts.com, I believe is the site. easy DIY from www.audizine.com/forum. not a big deal 
Jan 2012

111200 mi

US $1200
Had to replace the steering rack due to loose steering symptoms. A clunk was heard when quickly turning the steering wheel counter clockwise meaning 1 side of the rack was damaged. 
Jan 2014

83800 mi

US $100
Coolant flange is leaking. Observed when coolant levels dipped low after refilling. Common problem and may even be a wear item due to seal failing. 
Dec 2014

117000 mi

US $118
vacuum system was malfunctioning causing high vacuum leading to low oil pressure at low RPM 
Oct 2015

128500 mi

US $80
Previous coolant flange repair was not successful and it was still leaking. Replaced yet another time, hopefully stops coolant leak. 
Apr 2016

135500 mi

US $600
Water pump was leaking so I replaced pump, tensioner, and timing belt. Replace A/C compressor, drier, and restrictor due to seized A/C compressor. 
Jul 2017

152000 mi

US $300
Broken outer CV joint 

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2004 Audi S4 4dr Wagon

340-horsepower 4.2L V8 6-speed shiftable automatic AWD

Audi S4 in New York, United States
Jun 2009 - Jun 2011
Jan 2009

35000 mi

US $500
Headlight adjustment, interior mirror replaced warranty $500 
Sep 2009

44000 mi

US $180
AC need recharge, not under warranty 
Jan 2010

US $50
Automatic gearbox manual gear selector would not upshift. Electronic board ordered under extend warranty 
Aug 2010

57000 mi

US $2000
AC works intermitently, Repairs $2000, Audi would pay $1000 of the repair in assistance but delaying repair. 
Audi S4 in Nevada, United States
May 2009 - Apr 2010
Jun 2009

71000 mi

US $275
replace trunk latch actuator 
Audi S4 in Colorado, United States
Jun 2011 - Jul 2012
Jul 2011

73500 mi

US $100
Replaced front left turn signal bulb and socket, replaced key fob batteries, reprogrammed keys. To change bulb have to remove and then reinstall and re-aim entire headlamp assembly. Replaced front left turn signal bulb and socket, replaced key fob batteries, reprogrammed kets 
Jul 2012

92000 mi

US $1000
Fuel pump failed. Fuel filter also replaced. 
Audi S4 in New York, United States
Oct 2007 - Dec 2011
Jul 2009

39000 mi
Air conditioner wasn't working. The air conditioning compressor needed replacement. The work was covered under the Audi CPO warranty. While there, they also changed oil, filters and fluids. 
Sep 2009

40000 mi

US $50
Driver window regulator failed - apparently a very common problem for Audi/VW. 
Jan 2010

51200 mi

US $50
Power steering system lost all fluid to a leak. Leak was fixed, fluid replaced. 
Apr 2010

42000 mi

US $50
Fluid leak required replacement of oil pan. Part is cheap, but access requires full engine removal in this car. Repair was covered under CPO warranty. 
Jul 2010

44000 mi

US $800
Failed electrical connection in steering wheel led to traction control problem (system erroneously found car losing grip, leading to dangerous random overrides of driving inputs). Part replaced. 

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2004 Audi S4 4dr Wagon

340-horsepower 4.2L V8 6-speed manual AWD

Audi S4 in California, United States
Apr 2017 - Jun 2018
Oct 2017

144000 mi

US $18715
Radiator and major hoses Replace front and rear subframe due to corrosion and failing bushings Alternator retrofit to adapt later model (2004 mid year change) unit. Replace in-tank fuel pump Replace shocks Reseal valve covers, oil pan to address oil leaks Replace Master Window Switch Replace wheel bearings and carriers, control arms 
Feb 2018

146000 mi

US $1470
Trans & Diff Fluid Service, Driveshaft Replacement, Transmission Outshaft Replacement 
Audi S4 in Ontario, Canada
Aug 2015 - Sep 2016
Sep 2016

158100 mi

C $1800
Intermittent starting. Replaced MAF, fuel filter and then fuel pump. 
Audi S4 in New York, United States
May 2012 - May 2014
Apr 2013

115000 mi

US $7500
Main timing chain guide rail broke - requires removal of engine OR transmission to repair. Predictable failure at 100K miles, prefaced by noise on startup. Replaced clutch at same time since that was planned and tranny was out. 
Audi S4 in Alberta, Canada
May 2011 - Dec 2015
Sep 2011

21700 mi

C $800
Airbag light on. Passenger side seat airbag module replaces. Sensor connector had been previously replaced. 
Dec 2011

24800 mi

C $1000
Driver's side aux rad damaged by rock, slight coolant loss over 1 month. Replaced radiator. Red oil pressure warning light. No other symptoms (ie. no rough idle, no low oil level, etc.). Towed to dealer - unable to reproduce or diagnose. Replaced oil pressure sensor / transmitter at owner's request. 
Jan 2012

26040 mi

C $140
Intermittent lean code. Every other month, unable to diagnose, so code cleared. 
Mar 2012

27900 mi

C $2000
Brought car in for alignment due to steering wheel off-center; found upper control arm bushings cracked on drivers side; replaced both side as well as seized tie-rod 
Jun 2013

41540 mi

C $900
Random clunking at front under light acceleration; replaced sway bar bushing and end-links. Problem not resolved; now looking at corroded front subframe replacement. 
Jul 2013

42240 mi

C $3000
Replaced corroded front subframe and lower control arms due to worn bushings. 
Nov 2013

45880 mi

C $400
Rear latch mechanism failed; unable to close hatch. Replaced latch. 
Jun 2014

50220 mi

C $600
Passenger aux radiator damaged by rock and slowly leaking coolant. Not an uncommon issue and exacerbated by winter gravel in Alberta. Replaced part. 
Aug 2014

55800 mi

C $600
Leaking valve cover gaskets; replaced. 
Jun 2015

65720 mi

C $400
Battery replaced after car failed to start; reset modules as required. 
Nov 2015

85040 mi

C $1200
Leak between steering pump and steering rack. 

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2004 Audi S4 4dr Sedan

340-horsepower 4.2L V8 6-speed shiftable automatic AWD

Audi S4 in California, United States
Oct 2012 - Jul 2013
Nov 2012

107800 mi

US $355
Driver's side inner CV boot split at outer retainer ring Both windshied washer nozzles stopped working. Diagnosis revealed split OEM washer fluid pipe on driver's side. Dealer attempted to shrink heat-tube around it without permission, did not work. 
Dec 2012

110000 mi

US $45
Oil pressure sensor physically broke, allowing large amounts of motor oil to leak through the small plastic fitting ONLY while running. 
Jul 2013

115000 mi
The OEM washer hoses became brittle and basically disintegrated. Probably due to excessive heat. I'd suggest that, if your hoses are working, to wrap them with some sort of heat shielding wrap, even if you've installed new ones. 
Audi S4 in Ontario, Canada
Feb 2018 - Mar 2018
Mar 2018

101680 mi

C $1160
Change front outer tie rods, alignment, safety certification. Change front upper control arms. 
Audi S4 in Alaska, United States
Jul 2014 - Oct 2016
Sep 2014

79000 mi

US $450
Transmission revving high before changing gears 
Oct 2014

79000 mi
Secondary air system problem emissions 
Sep 2016

94000 mi

US $450
Outer tie rods 
Oct 2016

94000 mi

US $450
Belt broke serpentine 
Audi S4 in California, United States
Dec 2014 - Jan 2015
Jan 2015

US $760
Fuel pump failed. 
Audi S4 in British Columbia, Canada
Feb 2009 - Jun 2011
Mar 2009

37820 mi
Replace one coil. 
Sep 2009

42160 mi
replace one cat 
Sep 2010

49600 mi

C $1500
leaking aux rads 
Audi S4 in Minnesota, United States
May 2013 - Feb 2016
Dec 2013

65000 mi

US $700
Intake gaskets. 
Apr 2015

77200 mi

US $5600
Rear main seal needed replacement. 
Feb 2016

83000 mi
Valve cover gaskets 
Audi S4 in California, United States
Oct 2010 - Oct 2011
Apr 2011

106000 mi

US $400
replaced valve cover gasket on both sides, was leaking oil, 1 quart every 100 mile or so 
Audi S4 in North Carolina, United States
Aug 2012 - Dec 2016
Jan 2013

93000 mi

US $400
Front passenger wheel bearing. 
Oct 2013

94000 mi

US $3500
Catalytic converters stopped up and flex couplers blew out on exhaust mid pipes. Replaced mid pipes (required) and cat back (pro actively). Opted for aftermarket parts reducing part costs about 50%. 
May 2014

94000 mi

US $425
MAF element cover came off and lodged in throttle body MAF replaced. Luckily cover didn't enter intake or engine. 
Nov 2016

103000 mi

US $2000
Catalytic convert replacement.  
Dec 2016

103000 mi
Fuel trim issue never resolved. 
Audi S4 in Illinois, United States
Feb 2009 - Mar 2010
Mar 2009

39000 mi

US $1200
Driver side auxiliary radiator and associated hose(s). 

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2004 Audi S4 4dr Sedan

340-horsepower 4.2L V8 6-speed manual AWD

Audi S4 in California, United States
Feb 2010 - Jul 2011
Jul 2011

16000 mi
oil leak pass side valve cover 
Audi S4 in Massachusetts, United States
May 2010 - Sep 2014
Jul 2011

83000 mi

US $420
Front passenger window regulator replacement 
Feb 2012

92000 mi

US $700
Leaking radiator replaced. 
Sep 2012

97000 mi

US $1500
Front ball joints all worn, replaced all stab links and tie rod ends. Oxygen sensor failure. 
Audi S4 in Massachusetts, United States
Jan 2010 - Jun 2018
Feb 2011

50300 mi

US $940
One of aux radiators started to leak and needed to be replaced 
May 2014

69000 mi

US $950
Middle muffler rotted through. Had to change the exhaust from after the cats 
Sep 2014

70000 mi

US $650
Self-diagnosed. Starter motor failed. Replaced with OEM. Messy 5 hour job so ordered part and gave it to a good local shop. Noticed a few non-critical engine oil leaks and a weeping coolant hose (clamp replaced). 
Apr 2018

84000 mi

US $3000
Failed alternator. Shredded the belt. Required replacement including tensioner. Since alternator model was only used for one year, it is no longer available so modification kit required to adapt for newer model. 
Audi S4 in New Hampshire, United States
Apr 2010 - Jun 2011
May 2010

70000 mi

US $2200
AC was not working, compressor needed to replaced & because of metal bit of the failed compressor were in the dryer it needed to be replaced as well. 
Audi S4 in New Jersey, United States
May 2011 - Jun 2011
Jun 2011

78000 mi

US $3800
Replaced A/C compressor and all related components Replaced A/C compressor and all related components 
Audi S4 in Hawaii, United States
May 2011 - Dec 2011
Dec 2011

78000 mi

US $650
Heater hose leaking. Required removing the trans and cutting out the catalytic converter. 
Audi S4 in Georgia, United States
Jul 2010 - Apr 2017
Feb 2014

70000 mi

US $220
Original OEM starter began to fail in the fall season with colder temperatures in the winter the issue was increasingly frequent. Ordered part online and installed in garage. 
May 2016

88900 mi

US $250
Low Pressure Power Steering return line that runs next to the exhaust manifold failed. Cracked after years of heat cycles. 
Sep 2016

96000 mi

US $2500
Alternator replacement 
Audi S4 in Indiana, United States
Mar 2010 - Mar 2017
May 2010

103000 mi

US $121
Replaced: 079103483K (1) 079103483L (1) 077103487B (2) 079103487A (3) 049103491 (4) 
Sep 2011

120502 mi

US $25
Fuel pump went bonkers, car wouldn't start, left me stranded @ grocery store for 20 mins before it allowed the car to start to limp home. The only forewarning was improved gas mileage the previous 3 fill-ups. Replaced with OEM B7 S4 exhaust hangers to pull muffler tips tighter to the bumper reliefs. 
Dec 2011

123723 mi

US $580
Torn upper control arm bushings caused squeaking and knocking noises when engaging suspension travel. Replaced front upper (both on both sides), front lower (both on both sides), and swaybar endlinks with Meyle HD components. 
May 2012

127740 mi

US $138
A month prior to the repair date, the fuel level would not read more than 3/4 full, with the tank topped off. Culprit was the pass-side fuel level sending unit. Repair req'd using the fuel level down to be able to reach the sensor. 
Aug 2012

128200 mi

US $64
Cyl 8 spark plug fouled with oil deposits. Cyl 7 also showed oil deposits, but not as much as cyl 8. 
Jun 2013

131429 mi

US $139
The shift linkage cross rod popped the joint and prevented moving the shifter left/right into the 1-2 and 5-6 gates, and also made it hard to shift into 4th w/o grinding. Left me with only 3rd gear while driving in town. No forewarning. The shift linkage cross rod popped the joint and prevented moving the shifter left/right into the 1-2 and 5-6 gates, and also made it hard to shift into 4th w/o grinding. Left me with only 3rd gear while driving in town. No forewarning. 
Jul 2013

131229 mi

US $36
Matte finish coating on driver-side door switch plate gets a lot of wear over the years from finger nails while finding the window switches. Couldn't find a way to restore the finish, so I replaced it. 
Dec 2013

134646 mi

US $51
Issue was related to the Electric trunk lock release solenoid aka the actuator that opens your boot lid when you hit the trunk release button on the fob or hit the switch above the license plate. The actuator was not opening the boot lid. Issue was related to the electric trunk lock release solenoid aka the actuator that opens your boot lid when you hit the trunk release button on the fob or hit the switch above the license plate. The actuator was not opening the boot lid. 
Apr 2015

137000 mi

US $78
Wiper transmission seized. 
Jun 2015

138000 mi
Steering wheel vibration at speeds above 55mph when accelerating or decelerating. 
Audi S4 in California, United States
Apr 2010 - Feb 2015
Aug 2010

99300 mi

US $750
Fuel gauge gives incorrect reading. Replaced fuel floaters in gas tank. Fuel reading is still incorrect, in fact, it's worse. Still attempting to repair. Rubber boot torn on front axle. Rebuild axle and reinstall.  
Nov 2010

103300 mi
Passenger side floater was reading twice the normal Ohm rating, replaced unit. 
Jun 2011

114000 mi

US $3200
Radiator had slow leak. It was replaced. 
Sep 2011

118000 mi

US $450
Power steering hose ruptured. Replaced part. 
May 2012

122500 mi

US $600
Noticed smell of burning oil. Valve cover gaskets leaking, had them replaced. 
Feb 2014

129000 mi

US $100
Coolant reservoir tank cracked and leaking, replace failed part. 
Jun 2014

132000 mi

US $300
Front axle on the passenger side had cracked rubber boot. Replaced with rebuilt part. 
Aug 2014

132900 mi

US $1200
Replaced worn bushings in front control arms and replaced upper control arm to repair worn tie-rod 
Audi S4 in Arizona, United States
Sep 2009 - Dec 2019
Oct 2009

37000 mi

US $200
AC compressor failure 
May 2010

40000 mi

US $400
valve cover gasket leak 
May 2012

56300 mi

US $150
power steering pump 
Nov 2012

58300 mi

US $250
tie rod bushings worn - replaced fuel leak at tank coupling 
May 2013

60000 mi
replaced sunroof potentiometer, coolant overflow bottle leaking 
Aug 2013

62000 mi

US $400
o ring in system failed battery cable corroded 
Sep 2013

62000 mi

US $50
gas filler neck seal torn- seal replaced 
Oct 2014

67500 mi

US $540
Pass front window inoperable - replaced window regulator 
Mar 2016

77000 mi

US $120
Replaced right rear window regulator 
May 2016

77600 mi

US $150
replace drivers front window regulator 
Dec 2018

88000 mi

US $600
pads and rotors,front and rear 
Mar 2019

89000 mi

US $1500
Radiator leak - replaced main radiator 
Dec 2019

91000 mi

US $1500
O2 sensor and harness replaced 
Audi S4 in New Jersey, United States
Nov 2008 - Jan 2011
Feb 2009

52000 mi

US $350
Passenger side auxilary radiator.  
Aug 2009

58000 mi

US $500
Very slight water damage in driver and passenger footwell, caused damage to telematics and comfort module. Also required reprogramming. 
Sep 2010

68000 mi

US $150
Front right window regulator replaced 
Audi S4 in Puerto Rico
Dec 2008 - Oct 2011
Jan 2009

21000 mi

US $310
Mass Air Flow was replaced. 
Oct 2011

39000 mi
The accessory belt for the alternator broke. Replaced belt and performed preventive maintenance by replacing accessory belt pulley and tensioner. Additionally, the spark plugs were replaced. 
Audi S4 in Nebraska, United States
Nov 2008 - Mar 2013
Sep 2009

84000 mi

US $25
Coolant overfill tank cracked and leaking. 
Jun 2010

84000 mi

US $150
Valve cover gaskets replaced. 
Oct 2010

90000 mi

US $300
Accessory belt and tensioner bad. Both replaced 
Audi S4 in Texas, United States
Nov 2008 - Mar 2010
Apr 2009

57000 mi

US $100
Upper control arms 
Aug 2009

64000 mi

US $150
Auxiliary radiator leak. 
Audi S4 in Maryland, United States
Oct 2008 - Oct 2014
Aug 2010

142000 mi

US $1200
Driver's side front window regulator needed replacement. Control Arm bushings worn. Replaced entire front suspension (upper and lower control arms) with Mayle kit. 
Oct 2010

146300 mi

US $138
Obviously a bad fuel guage sender, but Anchor Audi (never go there again) wasted time and only ran a VAG on the dashboard gauges. Even I know that the back seat needed to be removed and an ohmmeter run across the sender contacts. Sigh... 
Jun 2011

153000 mi

US $508
Recharged A/C myself thought not clearly needed. Afterwards A/C would shut off. It turns out I had overcharged the R34, and the shop had to evac and refill the system to proper specs. 
Oct 2011

158500 mi

US $520
Fuel level sender replaced Fuel vapor canister replaced after CEL. 
Jul 2012

172000 mi

US $520
Front passenger side window regulator needed replacement. 
Aug 2012

173800 mi

US $35
Had to replace front turn signal bulb socket. 
Oct 2012

178000 mi
Wheel bearings needed replacement. 
Nov 2012

179500 mi

US $2600
Upper control arm and mount 
Feb 2013

186000 mi

US $900
Removed and replaced serpentine belt due to wear. Replaced coolant reservoir. It had small crack in it, and coolant was crystalizing on the outside of the tank. 
Apr 2013

187700 mi

US $1630
Right Front axle and left upper control arm needed replacement. (suspension noises and irregular tire wear) 
Jul 2014

206000 mi
Developed a radiator leak in the secondary radiator on the front passenger side of the car. It needed replacing. I had starter replaced due to the common problem with B6 Audis. During cold weather, the starter will not turn over. I've dealt with the problem for years, just patiently waiting for the car to start, but i decided to end the suffering. 
Audi S4 in California, United States
Feb 2009 - Dec 2009
Mar 2009

60000 mi

US $125
I noticed a leak in coolant, a pressure test was conducted but no leak found, found to be a possible overfill issue. 
Dec 2009

64000 mi
Oil/coolant leak. 
Audi S4 in Maryland, United States
Jul 2008 - Jun 2012
Jan 2009

52000 mi

US $60
Ignition Coil went bad and was replaced by me. 
Mar 2009

54000 mi

US $50
Another Ignition coil went bad. Replaced in an hour by me. 
May 2009

57000 mi

US $125
My front passenger side window regulator went bad (known VW/Audi problem). The regulator was successfully replaced by me. 
May 2010

66000 mi

US $300
My fuel pump died. Part was replaced by me. 
Aug 2010

69000 mi
Auxiliary radiator was leaking. Part replaced by me. 
Nov 2010

73000 mi

US $220
The inner cv boot on my front drivers side axle was torn. The part was successfully replaced by me. 
Jun 2011

80000 mi

US $300
I was having a slight vibration at certain speeds so I changed out the outer tie rods. While working I noticed the control arms and inner tie rods were going bad as well. So I replaced them all while I already had the car apart. 
Jul 2011

81000 mi

US $50
One of my O2 sensors went bad and i replaced it myself. 
Apr 2012

87000 mi

US $250
The dual mass flywheel started to fail by separation which is a known failure point of the b6s4. A vibration could be felt when reving the car. The part was replaced successfully by me. 
Audi S4 in Washington, United States
Dec 2009 - Aug 2014
Mar 2011

70000 mi

US $400
Sticky caliper and a worn bearing drivers side 
Sep 2011

74000 mi

US $600
Lower control arms and bushings, normal for this mileage. Added H&R lowering sport springs and Hankook RS-3's while at the shop. 
Apr 2013

88500 mi

US $200
Sunroof control unit 
Jun 2013

91000 mi

US $1800
Delphi alternator in these cars a known weakness. Replaced with an upgraded Hitachi unit that required a couple of updates to the existing water cooling for the alternator. 
Oct 2013

94500 mi

US $700
Starter motor replacement 
Jul 2014

102300 mi

US $1200
Power steering pump failed 
Audi S4 in Minnesota, United States
Aug 2008 - Mar 2010
Oct 2008

50000 mi

US $50
The compressor went out on the AC. In order to replace the $600 part, the bumper and other front-end parts needed to be removed. 
Audi S4 in Georgia, United States
Sep 2009 - Jun 2011
Oct 2009

58000 mi

US $500
Valve cover gaskets. Coolant expansion tank. 
Mar 2010

63000 mi

US $1300
water pump/thermostat replaced Replaced engine mount and snub mount. CV boot replaced. 
Audi S4 in Florida, United States
Aug 2009 - Mar 2010
Dec 2009

86000 mi
Valve cover gaskets. serpentine belt, pulley, & tensioner TSB 
Audi S4 in Wisconsin, United States
Nov 2009 - Jun 2011
Dec 2009

103000 mi

US $5000
Camshaft adjuster. Only way to repair is to pull the engine Valve spring failure on Cyl 3 - engine is going to be replaced 
Jul 2010

108000 mi

US $35
High Pressure switch failed Failure of wheel bearing and control arm Rough idling - dealer couldn't replicate and no DTC warnings found 
Jun 2011

115000 mi

US $700
Leaking transmission seal dripping on exhaust 
Audi S4 in Tennessee, United States
May 2015 - Jun 2015
May 2015

157000 mi

US $300
Replace leaking valve cover gaskets 
Audi S4 in Quebec, Canada
- Sep 2005
Sep 2005

19840 mi
Changing block motor due to invalid boost pressure in cylinder 4 & 8 caused by malfunction in cylinder 2. Approx. cost by the dealer and audi 20k$. 
Audi S4 in Connecticut, United States
May 2011 - Apr 2013
Aug 2011

71000 mi

US $700
Problem with shifter. Replaced rear sway bar, brake pads, suspension end links. 
Dec 2011

73000 mi

US $200
Sand blast and paint inside of valve covers and replace gaskets 
Feb 2012

74800 mi
coolant sensor replaced, fuel filter replaced, inside of valve covers sanblasted and painted Still failed to start when warm, replaced the cam position sensor 
Aug 2012

81000 mi
one tie-rod end frozen, one old and sloppy 
Oct 2012

83500 mi

US $50
The car developed shifting problems. We were convinced that the trans was OK, but you never know. Turns out the Oxy sensor wire was wrapped around the linkage and once freed, all was well. 
Dec 2012

86000 mi

US $300
Replaced a shifting bushing and "evacuated" those pesky cats 
Mar 2013

88000 mi

US $200
reset idiot light. replaced o2 sensor 
Audi S4 in California, United States
Jun 2005 - Aug 2008
Jan 2005

20000 mi
Adjusted manifold bolt - fixed rough idle. no other problems in 4 years. great car 
Audi S4 in California, United States
Jan 2012 - Feb 2012
Feb 2012

82000 mi

US $110
Fan Broke 
Audi S4 in Nevada, United States
Dec 2015 - Dec 2016
Aug 2016

117400 mi

US $600
Replace a/c compressor Timing chain guide has broken (plastic guide) and is allowing chain to slack and sounds horrible when idling. 
Audi S4 in Washington, United States
Oct 2016 - Jun 2018
Jan 2017

115000 mi

US $3500
Replaced radiator + hoses, transmission cooler due to leaks. Replaced alternator. 
Apr 2017

122000 mi

US $1000
Replaced motor mounts due to leaks and lack of engine rigidity. Replaced driver window regulator due to excessive noise and inconsistent window operation. 
May 2018

135000 mi

US $700
Replaced clutch slave cylinder due to no pressure in the clutch pedal. Bled system. 
Audi S4 in California, United States
Jun 2013 - Jan 2014
Oct 2013

85500 mi

US $3000
Warped valve covers, broken lumbar support 
Jan 2014

88000 mi

US $450
Faulty crank position sensor 
Audi S4 in New York, United States
Jun 2011 - Dec 2018
Jan 2012

43200 mi

US $30
after a 1000k trip, i noticed that the fuel pump was making a loud mechanical noise on initial start up and ended after 30sec. , googled the problem, fuel pump VS fuel filter..?? replaced the fuel filter and fuel pump noise disappeared. 
Jun 2012

39654 mi

US $290
changed both driver and passenger window regulators. 
May 2013

43000 mi

US $2300
changed both driver and passenger window regulators. Both aux radiators were found to be leaking coolant on the back side. Had them pulled and replaces with OEM parts and hoses. small coolant leak on both right and left front of car. both right and left auxiliary radiators rusted because of debris from low air intake position , design flaw.! full coolant replaced , radiator hoses replaced. 
Jun 2013

42000 mi

US $1600
small coolant leak on both right and left front of car. both right and left auxiliary radiators rusted because of debris from low air intake position , design flaw.! full coolant replaced , radiator hoses replaced. 
Nov 2014

54000 mi

US $3500
Began hearing a ticking noise from engine compartment. Took to several locations and found that a/c compressor had failed. It was winter so no noticeable difference was noticed. Had compressor replaced with OEM parts and systems refilled. 
Audi S4 in Georgia, United States
Aug 2012 - Mar 2013
Dec 2012

66000 mi

US $210
Power steering pump spline connector and sleeve replaced. 
Audi S4 in Michigan, United States
Jan 2014 - Oct 2014
Oct 2014

121000 mi
Timing chain guide failure, caused the chain to skip tooth, bend valves, then scorch the cylinder walls and piston tops. 

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2004 Audi S4 4dr Sedan

Audi S4 in Norway
Dec 2014 - Mar 2017
Jan 2015

155500 mi

$600
Changing the valve seals. Only natural for an engine that's been running this flawlessly for so long. 
Oct 2016

168020 mi

$500
Faulty connection to headlights 

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2004 Audi S4 2dr Convertible

340-horsepower 4.2L V8 6-speed shiftable automatic AWD

Audi S4 in British Columbia, Canada
May 2010 - Jul 2015
Jul 2010

45260 mi

C $186
Software that operates power top failed because of low battery voltage. This is a common problem and was quickly resolved by the dealership. 
Mar 2011

52700 mi

C $650
rough idle when engine warm, CEL on briefly then off, shop read engine codes, replaced battery and swapped ignition coils from one cylinder bank to the other, told to come back if problem returns. 
Nov 2011

57540 mi

C $56
replaced front upper suspension bushings  replaced valve cover gaskets and half moon gaskets to repair oil leak DIY replacement of the coolant reservoir - there were stress fractures forming on the side of the tank. It wasn't leaking but would probably begin leaking within six months. Part cost $56.00 plus some rad fluid to replace the amount lost. 
Oct 2012

66340 mi

C $380
front crank seal failed 
Jan 2013

68200 mi
crank seal failing again 
Feb 2013

68600 mi

C $550
crank seal failure misdiagnosed - actual leak was from the oil filter canister connection to the block 
Mar 2013

68200 mi

C $225
driver side window came out of track and fell into the door 
May 2013

69840 mi
driver side window not sealing with rear quarter window - windows adjusted so that seal was air tight 
Jun 2013

70680 mi

C $980
power steering hoses burst 
Oct 2014

75020 mi

C $2522
Oil leaks from valve covers. Replaced gaskets and seals. The car still leaks oil. Airbag light stayed on constantly. 6 speed paddle shift automatic won't upshift out of first gear when the engine is hot and has been driven in stop and go traffic. Upper link bushings falling apart 6 speed paddle shift automatic won't upshift out of first gear. It required two trips to detect a bad wheel sensor on the front left wheel. Replacement of sensor resolved the problem. 
Jul 2015

86800 mi

C $1400
Fuel pump failed. Replaced it and performed major service at the same time. The oil leak was minor and I stopped wasting time and money on this problem. The engine still dripped oil. V8 powered Audis of this era are notorious for this problem. 
Audi S4 in New York, United States
May 2011 - Mar 2013
Jun 2011

29000 mi
a/c went out. a/c repair 2nd try: still does not work correctly 
Mar 2012

32000 mi
Broken cord within the convertible top. 
Mar 2013

32000 mi

US $1106
Replace Valve Cover Gaskets. Parts $330 and $894 for 6 hours of labor. 

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2004 Audi S4 2dr Convertible

340-horsepower 4.2L V8 6-speed manual AWD

Audi S4 in New Zealand
Sep 2016 - Jan 2017
Sep 2016

74400 mi
Wire into boot lid had degraded, needed to replace wire - its the wire to the antenna in boot lid. Symptom was music system sound dropping out as the boot lid was opened and closed. Currently have battery drain issues unsolved. 
Jan 2017

$150
Crank position sensor replacement 
Audi S4 in Michigan, United States
Feb 2010 - Jun 2018
Jun 2010

97000 mi

US $350
Wipers seized in pivots - corroded from salt in the winter 
Dec 2010

103000 mi

US $350
Won't crank - corroded solenoid in starter motor... 
Jun 2011

111000 mi

US $500
Solenoid in the starter motor was corroded and the car would not start... replaced the starter motor - (the solenoid is integral to the starter). Also replaced the Battery - since the high temperature of the engine weakened it to 60%. 
May 2012

120300 mi

US $300
Slow responding Ox sensor - rough idle/rough accel 
Oct 2014

131300 mi

US $6300
Misfire on one bank + Cam timing advanced error. Plastic timing chain tensioners broken/worn, cam tensioners worn. Pull engine and replace all 
Audi S4 in Washington, United States
Apr 2012 - Dec 2012
Jun 2012

67000 mi
Econ button would not go off. Hole in A/C compressor. As I'd only had the car for a week, dealer paid for repair. Passenger window motor & driver's seat motor non-working when I purchased the car. 
Audi S4 in California, United States
Mar 2009 - Oct 2015
Apr 2009

40000 mi

US $100
Radio stopped working-"no antenna" came up on radio receiver. Connection between radio and antenna had to be replaced. 
Nov 2009

44900 mi

US $800
engine manifold gasket leaking suspension bushings worn rear brake light burned out 
Aug 2010

49000 mi

US $400
Trunk expander control lever broke. 
Oct 2010

50000 mi

US $175
Brake sensor switch failed causing ABS light to come on. 
Aug 2011

55300 mi

US $300
Nav stopped working-had to replace computer.  Also fixed leaky head gaskets. 
Jan 2012

52300 mi

US $300
Whining noise from rear of car-fuel pump failing-fuel pump and fuel filter replaced. 
Sep 2013

70000 mi

US $1900
Engine would not start. Engine speed sensor was replaced. Convertible top would not work. Motor and latches failed and were replaced. 
Dec 2014

78000 mi
Convertible top leaks. 
Jul 2015

80200 mi

US $1600
Convertible top not working-had to replace two motors. 
Oct 2015

81000 mi
leaking radiator 
Audi S4 in New York, United States
Jan 2009 - Jun 2011
May 2009

61000 mi

US $1700
Various suspension rubber had deteriorated and was replaced.  
May 2010

74000 mi
Two out of eight of the ignition coils failed completely. Received a recall notice, but they failed before I could have the units replaced. 

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2004 Audi A4 4dr Wagon

turbocharged 170hp 1.8L I4 6-speed manual AWD

Audi A4 in Colorado, United States
- Aug 2006
Jul 2005

26235 mi
rear seat belt warning light, replaced seat sensor. 
Aug 2006

44231 mi
left front speaker cutting in and out. Cleaned door electrical connectors to fix. 
Audi A4 in New Hampshire, United States
Nov 2009 - Nov 2011
Jul 2009

90000 mi
Wipers started going slower and slower till they finally stopped. Replaced wiper linkeage due to corroded bearings. 
Aug 2009

92000 mi
Drivers window stopped working, replaced window regulator.Radiator seeping, replaced radiator. 
Audi A4 in Colorado, United States
Dec 2010 - Jun 2016
May 2014

72000 mi

US $80
Snub (front) engine mount in need replacement. 
Jan 2015

US $600
Crankcase oil breather hose was cracked, replaced. Coolant hose behind engine leaking, replaced. 
Mar 2015

76000 mi

US $200
Crankcase position sensor needed replacement. 
Audi A4 in Vermont, United States
May 2010 - Jan 2013
Jul 2010

91500 mi

US $1600
AC compressor catastrophic failure, apparantly a common problem. Fortunately I was able to buy a new compressor, receiver/dryer and seal kit for about 500 and brought it to local shop for installation(Dealer wanted over 1400 just for parts) 
Nov 2010

99000 mi

US $700
Camber out of spec, replace 1 Front lower control arm on each side, 4 wheel alignment. 
Sep 2012

132000 mi

US $250
Cam seals and valve cover gasket 
Jan 2013

US $900
Cam seal leak, coolant flange leak at back of cyl head. 

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2004 Audi A4 4dr Wagon

turbocharged 170hp 1.8L I4 5-speed shiftable automatic AWD

Audi A4 in Ohio, United States
Jul 2010 - Dec 2012
Aug 2010

72000 mi

US $160
front rotor change 
Sep 2010

75000 mi

US $109
Right front wheel bearing. right front wheel bearing 
Nov 2010

80400 mi

US $600
Replaced vacuum tubing below intake manifold 
Audi A4 in Rhode Island, United States
Nov 2009 - Jun 2013
Aug 2010

107000 mi

US $750
vacuum leak 
Nov 2010

112000 mi

US $200
lack of heat. cooling system flushed, and thermostat replaced. heat is slightly better,but is still takes a long time to warm out, and it won't get hot. mechanic believes waterpump may be faulty. 
Sep 2011

127000 mi

US $1200
replaced shocks at 126,000. 
Sep 2012

139000 mi

US $2500
losing coolant, had cracked head. Replaced head and did timing belt replacement at same time. 

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2004 Audi A4 4dr Wagon

220-horsepower 3.0L V6 6-speed manual AWD

Audi A4 in Ontario, Canada
Jul 2009 - Aug 2014
Jan 2010

89900 mi

C $330
Rear differential leak 
Jun 2010

95480 mi

C $400
Passenger Window motor broken 
Jun 2014

153140 mi

C $2900
Car in for timing belt change, spark plugs and two broken parts that had the CEL on (about half the repair bill for regular maintenance) 

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2004 Audi A4 4dr Wagon

220-horsepower 3.0L V6 5-speed shiftable automatic AWD

Audi A4 in Massachusetts, United States
- Dec 2008
Mar 2004

12000 mi
headlight leveling sensor in the rear view mirror 
Jun 2005

20000 mi
left side rear seat belt tensioner 
Jul 2005

22000 mi
right side rear seat belt tensioner 
Oct 2006

32000 mi
camshaft position sensor 
Nov 2006

33000 mi
front wheel bearing 
Sep 2008

47000 mi

US $500
driver window regulator 
Dec 2008

48000 mi

US $50
power steering hose clamp (leak) 

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2004 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 6-speed shiftable CVT FWD

Audi A4 in Florida, United States
Oct 2010 - Jun 2011
Nov 2010

98000 mi

US $150
Car started to "jumping" upon starting. CVT transmission not shifting properly. Dealer recommended replacement of transmission. Replaced transmission fluid. Appears to be running significantly better. 
Audi A4 in Washington, United States
Jun 2007 - Dec 2009
Nov 2007

42000 mi
Replace toggle switch to control outside mirrors. Covered under warranty 
Dec 2009

60000 mi
Problem was detected when took in for a dealer bid on car. Camshaft tensioner seals are leaking. Estimated cost $650. Not a serious issue, but car now requires the addition of 1 qrt of oil every 4,000 miles. I have since sold car to private party. 
Audi A4 in South Africa
Sep 2009 - Jun 2018
Nov 2009

91840 mi
Rattle detected when engine strained (like crawl at idle) Dealer diagnose as timing tensioner and quoted exorbitant amount to repair - still looking for cheaper alternatives 
Dec 2009

91140 mi
Driver side electric window stuck open and was closed with manual intervention. Part quote received from dealer exorbitantly high - still looking for cheaper alternatives 
Jan 2010

93000 mi

R 10500
Timing belt and tensioner replaced by dealer. Rattle still present when engine under strain (like crawl at idle) but dealer states "not a problem" now although before repair the same noise was "a big problem" Driver side electric window lifter (not motor) replaced by dealer, now working fine 
Jan 2011

92840 mi

R 4000
linkages on anti-roll bar replaced as they were "worn out and a safety issue" AC compressor pulley broken off completely. Told that entire AC system had to be replaced - estimated cost about half the current value of the vehicle 
May 2011

101060 mi

R 10500
AC compressor disintegrated, was replaced together with condenser and accumulator, and whole system flush and re-gas 
Aug 2012

109400 mi

R 450
Aircon didn't work, flushed and regassed, detected leak on valve, replaced valve 
Aug 2014

125400 mi

R 8000
AC not working and indicator clears when manual override attempted. Check at mechanic, who diagnosed faulty compressor. Replaced Noticed oil leak, upon investigation saw cracked oil sump, welded shut during AC compressor replacement 
Oct 2014

126360 mi
Vehicle broke down next to the road with water pouring out at the bottom. Took it to the mechanic on a tow truck. After opening the top it turned out the timing belt broke, the cam shaft broke most of its teeth off and some valves were bent A couple of days after getting the car back from the time belt replacement it started juddering and missing under all acceleration. Drove to the mechanic who diagnosed a faulty coil. Replaced 
Apr 2017

147560 mi

R 2155
vehicle overheated suddenly and quickly which pointed to temp sensor or thermostat - both replaced 
Jan 2018

152520 mi

R 40
Left dim headlight blew, replaced 
Mar 2018

155000 mi

R 450
water leak detected, took vehicle to mechanic who replaced the radiator, leak found on pipes, repaired 
Audi A4 in North Carolina, United States
Oct 2010 - Dec 2016
Dec 2010

100000 mi
Bought vehicle with engine light on and air bag on. Took to dealer to get service records and found recall involving coil packs. Dealer replaced all 4 plugs no charge. Also found p0 420 got a quote for 1350 catalytic converter 
May 2011

104000 mi

US $60
fuel pump noisey due to bad fuel filter. fuel pump making loud humming/whine sound 
Mar 2012

110000 mi

US $225
Car jerking when stopped, had cvt oil/filter changed, problem resolved 
Apr 2012

110200 mi

US $125
EPC light and Check Engine P0102. Changed MAF Sensor and Vaccum hose replaced 
Mar 2014

138000 mi

US $156
Changed both motor mounts and snub mount 
Jul 2014

141000 mi

US $70
CV axle boot torn and car was shaking during acceleration. CV axle replaced 
Oct 2015

152200 mi

US $750
Egr valve (Combi Valve failed). Secondary air pump failed. CVT slight shudder, need oil replaced. 
Dec 2016

160000 mi

US $100
Coolant temp sensor failed. 
Audi A4 in California, United States
- Nov 2007
Oct 2007

28500 mi
hid bulb replacement window switch replacement under warranty 
Nov 2007

29000 mi
transmission control module replaced under warranty 

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2004 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 6-speed manual AWD

Audi A4 in Colorado, United States
Feb 2008 - Mar 2010
Mar 2008

45000 mi
Seatbelt in back was replaced caused airbag light when engaged, also had 45,000 maintenence done for free. 
Audi A4 in Florida, United States
Aug 2006 - Jun 2011
Feb 2006

26060 mi
glove box replaced. no cost due to warranty repair. would have cost 735.95 out of warranty. 
May 2008

62600 mi

US $700
new tires(not included in price) installed, balanced, four wheel alignment. stainless steel brake lines installed. brake fluid flush. 
Audi A4 in Ontario, Canada
- May 2007
May 2007

13020 mi
Sunroof was acting up, had the sunroof switch replaced under warranty by the dealer. 
Audi A4 in Pennsylvania, United States
Mar 2014 - Sep 2015
May 2014

87700 mi

US $1600
Wheel bearings replaces as well as timing belt and other maintenance items. 
Jul 2014

86000 mi

US $835
Rear coolant flange leaking. Airbag TSB needed completed. 
Mar 2015

96000 mi

US $100
Coolant leak at thermostat housing. 
Jul 2015

98000 mi

US $2000
Clutch replaced due to being worn at age. Normal. Control arms replaced due to age. Bushings were splitting. Inner and outer tie-rods replaced. 
Sep 2015

98000 mi
Steering rack leaking, needs replaced. 
Audi A4 in Ontario, Canada
Jul 2012 - Oct 2016
Aug 2012

127280 mi

C $4
coolant leak at back of head, was coolant temp sender O ring, read on internet a real pain to do, only took 40 minutes and cost $4.09 with tax for a new O ring and C clip 
Jul 2013

136700 mi

C $40
4 engine codes, engine missing, poor excelleration, dont use E3 spark plugs, less than a year old, junk on turbo cars. 
Jul 2014

150640 mi

C $300
Head gasket leaking, replaced as well as valve seals and cam seals Oil sensor replaced as gone bad Breather lines cleaned as easy to get at while apart as well as oil cooler or ring 
Feb 2016

172980 mi

C $300
Water pump leaking, replaced. Timing belt done at same time as it will be due in another 20000km. 
Oct 2016

173600 mi

C $800
Over 280 thousand KM on original clutch Well it finally went as well as clutch master cylinder so replaced clutch master and slave cylinders and installed all new clutch kit with new light weight single mass flywheel 
Audi A4 in Quebec, Canada
Sep 2011 - Sep 2012
Jun 2012

96720 mi

C $700
Evaporator got damaged by a road debris 
Audi A4 in Oregon, United States
May 2012 - Jun 2017
May 2012

122000 mi

US $300
Fuel Pump needed to be replaced 
Oct 2012

125200 mi

US $100
rear coolant flange 
Dec 2012

126000 mi

US $100
Water pump was leaking, replaced. 
May 2015

143000 mi

US $80
Replaced driver-side front wheel bearing 
Mar 2016

148000 mi

US $200
Engine mounts, transmission mount, and valve cover gasket 
Apr 2017

151 mi

US $1000
Replaced AC compressor 
Audi A4 in Georgia, United States
May 2010 - Jul 2014
Jun 2011

176000 mi

US $6
Alternator quit working. Determined brushes needed to be replaced. Brushes $2.00, sandpaper $4.00. 
Aug 2011

180000 mi

US $900
- Both Electrical Cooling Fans were bad. This in turn destroyed the electrical cooling fan module. - Master Clutch cylinder failed, replaced. 
Apr 2012

206700 mi

US $380
- rear of the engine thermostat clip failure: replaced - radiator developing crack: replaced  - crank case breather tube broken: crappy vw plastic: replaced 
Aug 2012

210000 mi

US $200
Crank case ventilation failed. This has thrown engine to missfire and throw map controlled coolant thermostat shorted to plus error code. Replaced crank case ventilation parts, reset ecm, all good. 
May 2014

245000 mi

US $350
steering rack has been leaking for last 100k miles 
Audi A4 in Pennsylvania, United States
Sep 2011 - Apr 2013
Sep 2012

170000 mi

US $6500
Clutch failure. A section of the clutch disc broke off. The clutch would hold a gear but not release. Clutch disc, pressure plate, and flywheel were replaced. Rear main seal was replaced as preventative maintenance. 
Audi A4 in California, United States
Nov 2009 - Jun 2017
Mar 2016

103000 mi

US $154
Window regulator failure Drivers front door latch micro switch failed closed Passenger side rear door latch micro switch failed open 
Audi A4 in New Jersey, United States
Aug 2013 - Dec 2016
Jul 2014

127000 mi

US $450
Windshield wiper gearbox seized and had to be replaced. 
Oct 2015

132000 mi

US $600
Replaced rear pads, rotors and calipers. 
Jun 2016

133000 mi

US $500
Injector seals were leaking 
Sep 2016

133000 mi

US $600
New exhaust downpipe and incidentals. 
Audi A4 in Rhode Island, United States
Feb 2010 - Dec 2012
Dec 2010

125000 mi

US $425
Fuel pump blew...towed in Sunday, replaced Monday 
Jun 2011

132000 mi

US $1020
replaced window regulator coolant leak/coolant temperature sender unit replaced 
Oct 2012

151000 mi

US $500
Oil leak 
Audi A4 in Ontario, Canada
Jun 2009 - Dec 2011
Oct 2009

61060 mi
Original factory coil packs failed and had to be replaced 
Mar 2010

63860 mi

C $200
Replaced crankshaft sensor. Replaced crankshaft sensor 
May 2011

77160 mi

C $700
Coolant temperature sensor intermittently not working 
Sep 2011

81840 mi

C $350
Replaced rusted exhaust flex pipe 
Audi A4 in Washington, United States
Sep 2009 - Sep 2017
Jun 2010

83000 mi

US $1700
Valve cover and camshaft gaskets were leaking and had to be replaced. 
Jul 2010

83000 mi

US $110
MAF sensor replaced 
Mar 2011

95000 mi

US $100
Replaced camshaft position sensor and boost control solenoid 
Mar 2012

100000 mi

US $500
boost issue traced to broken wire to boost control solenoid 
Mar 2014

115000 mi

US $750
coolant flange replaced 
Jun 2014

117000 mi

US $1500
new clutch installation 
Oct 2014

121000 mi

US $200
dead engine position sensor 
Dec 2014

124000 mi

US $1200
leaking water pump 
Sep 2016

131000 mi

US $1100
Motor mount replacement 
Jul 2017

136000 mi

US $100
Camshaft position sensor failed and required replacement 
Audi A4 in Washington, United States
Jul 2011 - May 2015
Jul 2012

88200 mi

US $190
Replaced the Fuel pump that was dying. 
Jun 2013

94000 mi

US $250
Replaced Upper Control Arms. Replaced the Variable Cam Timing Solenoid and tensioner assembly. 
Oct 2013

94300 mi

US $50
Replaced Oil Cooler that was leaking oil into the coolant system. 
Jul 2014

98300 mi

US $300
New tie rods and control arms. 
Apr 2015

103000 mi

US $120
Replaced radiator that had a pinhole leak. 
Audi A4 in Queensland, Australia
Feb 2015 - Jan 2018
Feb 2015

169260 mi

A $100
Initially took car in because of rust in roof rail Audi fixed under warranty. Car then leaked water, Audi again fixed under warranty. Was drain tubes for sunroof. Vehicle was over revving and had erratic idle, also blew oil all over side of engine. I replaced, PCV, breather tube, vacuum hoses, thermostat, top radiator hose and balance hose. Had erratic engine idle and over revving problems, coils were replaced by dealer because of recall. Did not fix erratic idle or over revving. Had over revving and erratic idle issue when purchased. All other attempts to fix made no difference. Finally crank position sensor failed. Replaced part, erratic idle and over revving issue gone. 
Mar 2016

179180 mi
re: Issue with rust in roof, started to rust out again. Finally repaired correctly when turret removed and repaired. Under warranty. 
Nov 2017

197160 mi

A $420
Took vehicle in to have timing belt kit installed. Mechanic found faulty water pump, also replaced. 
Jan 2018

197780 mi

A $55
Replaced coolant overflow tank. Stress cracks were forming so replaced as preventative measure. 
Audi A4 in Massachusetts, United States
Nov 2008 - Jun 2018
Jan 2010

140200 mi

US $350
Plastic thermostat housing cracked. Difficult to duplitcate - only "seemed" to leak when cold. Driving dried the leaked coolant so it was difficult to trace. 
May 2010

86000 mi

US $25
valve cover gasket was leaking 
Nov 2010

97000 mi

US $200
Engine running lean due to vacuum leak. Split hard line on crankcase breather system at the back of the head. Replaced entire section from suction valve to block. 
Mar 2011

105000 mi

US $45
Leaking thermostat housing. Shop replaced unit under warranty as it had been changed recently 
Aug 2011

110300 mi

US $250
Drivers side aigbar ignitor code - known issue with these cars. The harness has little slack, moving seat to limits sometimes stresses harness, it loosens up causing code. Connector cleaned and reassembled. 
Jan 2012

118000 mi

US $90
Side Airbag Ignitor code again. Driver's seat. Seat removed, contacts cleaned all reinstalled. Quicker and cheaper to do this than replace harness. 
Sep 2013

146000 mi

US $250
Rear coolant flange leaking 
Nov 2013

149000 mi

US $450
No heat- heater core clogged. Flushed and thermostat housing replaced. Required return trip since initial installation was faulty. 
Feb 2014

154000 mi

US $1000
floaty steering, instability, front end clunks. Tie Rod and Upper control arms replaced. Febi Bilstein UCA had lasted 25-30K miles; ball joint end was gone. Replaced with Meyle HD. TRE were original, replaced with Lemforder 
May 2014

158000 mi

US $458
Drivers side front inner CV joint fully split. Replaced entire axle since it was original and I had no idea how long the boot had been torn. 
Jan 2015

110800 mi

US $700
Heater core clogged beyond flush. Replaced with OEM. 
May 2015

175000 mi

US $250
Inner Cv boot torn, replaced axle with raxles unit 
Nov 2015

182000 mi

US $25
Lack of heat, flushed heater core, found not clogged, performed coolant flush, bled system refilled with new coolant. 
Dec 2015

183000 mi

US $150
front lower control arm outer bushings (lower strut) gone. arms were cheap replacement parts aquired in a previous pinch. 
Jan 2016

170700 mi

US $80
Engine Mounts leaking. Replaced with Corteco brand B5 S4 mounts 
May 2016

185100 mi

US $100
torn boots on drivers front axle (was a cheap replacement) dirt & grime getting in and causing wear and vibration. replaced with a quality unit from Raxles front passenger caliper seized. needed to replace pads (uneven wear and caliper) 
Feb 2017

191000 mi
Replaced caliper (the one replaced last year) due to sticking. Tried replacing/regressing slides first to no avail. Autozone warranty covered caliper. Rear coolant flange leaking. Replaced w/ aluminum coolant flange. Upon disassembly, found the o-ring was bad. 
Sep 2017

196000 mi

US $400
Changed lower control arms and inner and outer tie rods 
Dec 2017

197000 mi

US $1000
low oil pressure at higher rpms (fine at idle), pulled pan to check pickup tube and o-ring for sludge. No sludge present. removed oil pump, found wear, replaced oil pump and oil pressure return 

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2004 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 5-speed shiftable automatic AWD

Audi A4 in California, United States
Sep 2007 - Jun 2012
Oct 2007

40000 mi

US $350
wheel bearings replaced 
May 2009

50000 mi

US $1090
needed new water pump as fluid was leaking. got new timing belt too! 
Jun 2009

51000 mi

US $250
coolant temp thermostat replaced 
Jan 2011

62000 mi

US $650
both axles and boot replace seat fixed and 
Jun 2011

64000 mi

US $50
window motor and sunroof motor replaced 
Oct 2011

67000 mi

US $200
Fuel pump died, pump was replaced and fuel filter was replaced 
Mar 2012

71000 mi

US $70
Leaking hoses to be replaced 
Audi A4 in Connecticut, United States
May 2010 - Mar 2011
Jul 2010

103000 mi

US $1100
bad ignition coils and fuel pump 
Mar 2011

110000 mi

US $800
vacuum leak, check valve failures 
Audi A4 in Maryland, United States
Sep 2007 - Jan 2011
Jul 2008

57000 mi

US $50
Bad (howling right front wheel bearing replaced under CPO warranty with $50 deductable) 
Nov 2008

62000 mi
Fuel pump died. Replaced under CPO warranty Passenger front Window regulator was bad. Dealer replaced under CPO warranty 
Dec 2008

64000 mi

US $50
Leaking bleeder screw on hard coolant pipe. Leaking cam chain tensioner/valve cover gaskets. Finally after 4th time mentioning it, do they consider it not normal and repair. 
Sep 2010

95000 mi

US $100
bleeder check valve for the breather system and a couple of molded hoses were cracked. Caused rough running and check engine light, lean fuel codes.  
Audi A4 in Missouri, United States
Jul 2010 - Jan 2014
Jan 2012

US $220
No start, no CEL. fuel pump and filter changed by owner. shop quote $1200, my cost parts $220 PCV valve gave loud whine like the fan belt had failed. Got a low oil pressure light - took to shop diagnosed engine sludge build up. De-Sludged sump crankcase cover, changed PCV valve and some of the hoses. Total cost $996 Dipped headlight bulb needed replacing my cost $5 + 1hour labor. Shop quote $120 Crankcase position sensor failed. Car would not start, and gave codes suggesting a problem with this (CKP). Shop quote $200. my cost from ebay $16, and 2 hours labor 
Dec 2012

100000 mi

US $62
Engine none start, towed to garage, started next day ... garage said no compression due to flooding caused non start.... passenger headlight bulb change, and brake light... total cost $10 to change myself ... bulbs from ebay / amazon 
Sep 2013

108000 mi

US $510
The coolant flange went again, didn't want to deal with it, as my other car was in the shop as well so had shop tow it, and do the work. 
Jan 2014

89000 mi

US $50
Oil Dipstick tube disintegrated when I went to check the fluids, when the car wouldn't start, just like last year ... 
Audi A4 in Alberta, Canada
Feb 2008 - Mar 2010
Mar 2008

34720 mi

C $300
Computer lost settings, had to be reflashed. 
Audi A4 in Pennsylvania, United States
Oct 2007 - Jul 2013
Feb 2008

23000 mi
Noise coming from rear seat. Seat bracket needed retightened and greased. 
Dec 2009

53000 mi

US $100
Coil Packs Failed Windshield Wiper linkage/motor failed 
Jun 2013

100000 mi

US $165
AC needed recharged and checked for leaks. 
Audi A4 in Pennsylvania, United States
Feb 2009 - Dec 2016
Aug 2009

46000 mi

US $426
Motor regulator malfunctioned in front drivers-side door. 
Jan 2011

54000 mi

US $1400
Fluid leaks in several areas. 
Feb 2011

54200 mi
Broken sun visor clip. 
Mar 2011

55000 mi
Clip replaced 
Jan 2012

64000 mi

US $800
Fuel pumps required replacing 
Dec 2012

74000 mi

US $800
Bad wheel bearing and frozen tie rods. 
Jun 2015

94000 mi

US $800
AC not blowing cold. Slight coolent system leak. Cracked resevoir. 
Sep 2015

95000 mi

US $500
Oil leak cause coil pack failure. 
Dec 2015

97000 mi

US $1100
Front passenger window regulator and motor.  Hood alarm switch. 
Aug 2016

98000 mi

US $125
Tie rods needed replacing 
Audi A4 in Illinois, United States
Jun 2009 - Jun 2010
Dec 2009

68000 mi

US $35
Ignition Coil on Cylinder 2 failed. Old coil was revision "R" - replaced with like item. 
Jan 2010

69000 mi

US $170
Throttle body hose popped off. Car wouldn't run. Fouled spark plugs had to be replaced as side effect. 
Jun 2010

71000 mi

US $650
Several minor vacuum hoses needed replaced due to crack. hanger and bushing on anti-rollbar needed replaced 
Audi A4 in California, United States
Aug 2009 - Mar 2010
Aug 2009

63500 mi

US $30
Replace failed coil. 
Jan 2010

68000 mi

US $520
Fuel Pump Failed. 
Audi A4 in Quebec, Canada
Oct 2007 - Dec 2008
Jul 2008

42160 mi

C $50
Whining high pitched sound from front end...left front wheel bearing 
Oct 2008

44640 mi
The rack and pinion was changed successfully with no charge under extended warranty at the dealer.  
Audi A4 in Pennsylvania, United States
Mar 2011 - Jun 2014
May 2011

69000 mi

US $1000
Engine Coils had a TSB issued - Dealer Replaced All 4 at N/C 
Audi A4 in Connecticut, United States
Nov 2010 - Jan 2011
Dec 2010

99000 mi

US $1100
Replacement of fuel gauge system. 
Audi A4 in Pennsylvania, United States
Mar 2014 - Dec 2015
Nov 2014

120000 mi

US $200
Flush and purge heat exchanger 
Apr 2015

125700 mi

US $25
Harmonic balancer replaced 
Sep 2015

133000 mi

US $50
Turbo Wastegate Actuator 
Audi A4 in Virginia, United States
Dec 2014 - Jun 2015
Jan 2015

106500 mi

US $1700
Blown head gasket 
Jun 2015

123000 mi

US $250
Turbo inlet hose split. 
Audi A4 in Texas, United States
Nov 2015 - Jun 2018
Mar 2016

170000 mi

US $225
Replace PCV hoses Leaking coolant flange and heater hose coupler 
Aug 2017

192000 mi

US $250
Clear CEL, diagnose low fuel mixture 
Audi A4 in North Carolina, United States
Mar 2012 - Jul 2012
Jun 2012

126000 mi

US $1000
Front Upper & Front Rear Control Arm Bushings Oil dipstick tube broken ($20) Valve Gasket Cover cracked ($300) 
Audi A4 in Texas, United States
Dec 2011 - Mar 2014
Jun 2012

85000 mi

US $1500
Steering rack leaked oil. Seals were bad. Had to purchase a new one at the dealer. Passenger side window regulator broken. 
Jul 2012

86000 mi

US $500
Radiator fan came loose. Cut into radiator. 
Jun 2013

113000 mi

US $400
Auxiliary fan broke off of electrical motor. New motor and fan replaced. Coolant flange behind the block was leaking water. 
Audi A4 in Ontario, Canada
Apr 2011 - Mar 2016
Jun 2011

66340 mi

C $220
Replace coolant flange and temp sensor 
Aug 2011

72140 mi

C $70
I changed the drivers door window regulator myself because the dealer wanted $495 
Aug 2012

99640 mi

C $150
drivers front window regulator failed again 
Feb 2013

107960 mi

C $100
Oil level sensor light on dash. Oil Level Sensor replaced. 
Jun 2013

111600 mi

C $100
Replaced drivers side front window regulator (2nd replacement) 
Dec 2013

119660 mi

C $265
valve cover gasket was replaced 
Mar 2014

121520 mi

C $2000
Replaced head gasket to fix a bad oil leak from the passenger side, rear corner of the engine block. Also timing belt, coolant pump as PM. 
Jun 2014

125240 mi

C $680
Left front bearing was replaced, plus front rotors and pads 
Aug 2014

128000 mi

C $25
replace brake light switch 
Nov 2014

130200 mi

C $54
Replaced left fog light bulb 
Feb 2015

133300 mi

C $80
Dead cell in the battery resulting in vehicle failed to start 
Apr 2015

133500 mi

C $40
Drivers window switch on the armrest console stopped working. Replaced console switch. 
Oct 2015

140000 mi

C $100
Passenger front window regulator failed and had to be replaced. 
Dec 2015

142600 mi

C $150
The flex pipe from the exhaust down pipe ruptured and had to be replaced. 

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2004 Audi A4 4dr Sedan

220-horsepower 3.0L V6 6-speed shiftable CVT FWD

Audi A4 in North Carolina, United States
Nov 2010 - Apr 2012
Apr 2012

80000 mi

US $350
some sensor related to the xenon headlight 
Audi A4 in California, United States
Jun 2009 - Apr 2010
Sep 2009

87000 mi
CVT shifted jerkily, replaced. Warranty Direct paid $7000 bill. 
Apr 2010

96000 mi
Steering rack made noise and leaked, replaced. Sound system had unfixable intermittent crackling and poor AM reception. 

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2004 Audi A4 4dr Sedan

220-horsepower 3.0L V6 6-speed manual AWD

Audi A4 in California, United States
May 2012 - Aug 2012
May 2012

112000 mi

US $650
dead fuel pump 
Audi A4 in Minnesota, United States
Sep 2013 - Sep 2014
Nov 2013

109700 mi
Power steering rack and Pinon needed to be replaced due to leaking power steering fluid. Did not do repairs due to high cost. Decided to trade in vehicle 
Dec 2013

111000 mi

US $1500
Water pump failure although it had been replaced 30,000 miles prior. Timing belt also replaced early. 
Audi A4 in Connecticut, United States
Feb 2009 - Jun 2014
Jan 2009

52000 mi
-Engine Misfire. Dealer replaced entire engine block under warrante for free. -Brake light switch error required replacement. 
Jun 2009

53000 mi

US $5
Blown brake light bulb.  
Oct 2009

56000 mi

US $50
-Ground wire faulty from ECM needed to be replaced. It caused CEL light as well as engine misfire. Car stalled and needed to be towed to Audi. Extended warranty covered the tow and repair for $50 (deductable) 
Jan 2010

58000 mi

US $6
-Power steering making VERY loud noise in cold weather. Once warm it would stop, however, it got worse. Quickly added to fluid and the noise stopped totally. 
Oct 2011

74000 mi

US $450
fuel pump died 
Jan 2014

95300 mi

US $1500
Water pump replacement with timing belt. Replaced all shocks and broken control arms 
Jun 2014

97000 mi

US $125
Drivers side window regulator replaced 
Audi A4 in Massachusetts, United States
Aug 2008 - Oct 2012
Jun 2012

68000 mi

US $55
Window regulator broke, happens often with this model/type of vehicle. VW's are prone to it also. 

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2004 Audi A4 4dr Sedan

220-horsepower 3.0L V6 5-speed shiftable automatic AWD

Audi A4 in New Jersey, United States
Feb 2009 - Sep 2017
Aug 2017

90000 mi
Glove box hinge broke. Pulled out and epoxied, and put a backup screw in to support. Broke again a week later. 
Audi A4 in Indiana, United States
Dec 2009 - May 2011
Jan 2010

65000 mi

US $500
Windshield wiper transmission replaced. 
Jun 2010

66000 mi

US $220
AC stopped working. 
Audi A4 in Louisiana, United States
Nov 2009 - Jun 2011
Dec 2009

41000 mi

US $1041
Sudden fuel pump failure 
Audi A4 in Maryland, United States
Apr 2012 - Jun 2018
Jun 2012

57000 mi

US $20
Brake switch sensor 
Audi A4 in Zambia
Oct 2013 - May 2014
Nov 2013

70260 mi

$300
Cylinder misfire and one coil pack was found to be faulty and then replaced 

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2004 Audi A4 2dr Convertible

turbocharged 170hp 1.8L I4 6-speed shiftable CVT FWD

Audi A4 in California, United States
Sep 2011 - Oct 2013
Aug 2013

121000 mi

US $250
Transmission control module is failing and needs to be replaced. 
Oct 2013

124000 mi
Transmission control module rr 
Audi A4 in Massachusetts, United States
Apr 2010 - Jun 2018
May 2010

68000 mi

US $50
refrigerant recharged 
Jun 2010

70000 mi
engine check light on highway, limp mode for one minute, slowed, then light stopped, code shows misfires but coils just replaced as part of recall. 
Feb 2011

75300 mi

US $145
replaced transmission mount 
Sep 2011

79000 mi

US $500
engine coolant temp. sensor 
Jan 2012

74500 mi
crankcase breather system faulty causing oil consumption 
Aug 2012

83900 mi

US $250
alternator not charging needed new one 
Dec 2012

86000 mi
Scored cylinder walls, resulting in oil consumption, new factory short block under warranty as this was one of the factory covered 1.8t sludge cars. 
Oct 2013

89000 mi

US $350
tied rods clunking and squeeking 
Jun 2014

91000 mi

US $400
Hole in condensor 
Sep 2017

110000 mi

US $200
wobble from front under acceleration worn cv 
Audi A4 in California, United States
Jul 2010 - Jun 2011
Jan 2010

48000 mi
replaced water pump due to wetness on outside of pump. replaced timing belt because water pump was out. 
Sep 2010

61000 mi

US $8000
CVT transmission replaced due to slipping and stuttering when accelerating from stop. also would not move for first 5 seconds when accelerator was depressed. CVT transmission replaced due to slipping and stuttering when accelerating from stop. also would not move for first 5 seconds when accelerator was depressed. 
Audi A4 in Florida, United States
Oct 2010 - Feb 2012
Nov 2010

38000 mi

US $1900
Had to replace the transmission TCM unit on a CVT at only 37k 
Dec 2011

48000 mi
Warranty exchange on the TCM 
Feb 2012

48000 mi
they replaced the TCM as part of the warranty 
Audi A4 in Arkansas, United States
Oct 2007 - Aug 2009
Nov 2007

38000 mi
Brake switch failed causing brake lights to stay on (most of the time); caused battery to discharge 
Oct 2008

55000 mi
Replace right front wheel bearing. 
Audi A4 in Utah, United States
Oct 2009 - Nov 2010
Dec 2009

39000 mi

US $180
Car would appear to studder and then stall when coming to a stop occasionally, engine would not rev past 1300 when accelerator pressed, and car would not move, drive selection (PRNDS) on instrument gauge would all be highlighted at once. 
May 2010

42800 mi

US $100
Ignition Coils failed, replaced under Audi Ignition coil service campaign Cam Adjuster Seals leaking 

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2004 Audi A4 2dr Convertible

220-horsepower 3.0L V6 6-speed shiftable CVT FWD

Audi A4 in Florida, United States
Feb 2010 - Jun 2014
Aug 2010

61000 mi

US $1600
Reverse flashing gear selection indicators. Intermittent, would reset when car restarted. Diagnosed as Faulty CVT control computer. 
Nov 2010

64500 mi

US $1800
Gear Selector lights flashing, Replace transmission computer and reprogram 
Jun 2013

86000 mi

US $550
jerky take off 

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2004 Audi A4 2dr Convertible

220-horsepower 3.0L V6 5-speed shiftable automatic AWD

Audi A4 in Massachusetts, United States
Feb 2013 - Jun 2018
Jun 2013

99000 mi

US $320
Needed new oil pressure and oil level sensor 
Aug 2014

110000 mi

US $300
SRS - Airbag System. Seat Belt Igniter failed Srs airbag light. Diagnosed to bad connection with odbc2 computer. Replaced connector. 

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2004 Audi A4 / S4

Engine not specified

Audi A4 in North Carolina, United States
Nov 2010 - Jan 2011
Audi A4 in New Jersey, United States
Nov 2011 - Dec 2011
Dec 2011

120000 mi

US $335
Replace front passenger wheel bearing. 
Audi A4 in California, United States
Mar 2011 - Apr 2011
Apr 2011

98000 mi

US $200
power steering damaged on the gears. temporarily fixed twice at 200 each repair. to properly repair the engine needs to go off the car. car sold 
Audi A4 in New Jersey, United States
Sep 2007 - Mar 2010
Oct 2007

113000 mi
Told I need a new engine because of excessive valve wear. Note: Dealer performed ALL scheduled maintenance on this car. Audi refused to particpate in the $10K cost, so I traded car for a Prius. 
Audi S4 in New York, United States
Dec 2011 - Jan 2013
Jan 2013

83000 mi

US $200
Had to replace maf sensor 

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2004 Audi A4 / S4 4-door

turbocharged 6-cylinder diesel CVT 2WD

Audi S4 in Great Britain
Mar 2010 - Apr 2016
Jul 2010

77000 mi

£250
electric window winder lifter mech failed, common fault, part replaced Air conditioning was ineffective had to be vac'd out and repressurised, no leaks found. 
Feb 2013

84200 mi
Glow plugs failed Road spring snapped, new one fitted Drive belt about the fall off, bearings failed in belt guide and tensioner 
Jul 2013

85200 mi

£80
A/C recharged and dye added to trace leak 
Jul 2015

105000 mi

£120
reservoir bottle had split. Had to be replaced 
Apr 2016

114000 mi
CVT gearbox, input shaft has failed, car is write off. 

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2003.5 Audi S4 4dr Wagon

340-horsepower 4.2L V8 6-speed manual AWD

Audi S4 in France
May 2010 - Sep 2014
Apr 2013

80700 mi

€500
Two electrical relays were changed to prevent rapid battery discharging that was frequently leading to car not starting. Parking sensor malfunction. Emitting a high pitched beep different from usual noises 

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2003 Audi A4 4dr Wagon

turbocharged 170hp 1.8L I4 6-speed shiftable CVT FWD

Audi A4 in Netherlands
Sep 2016 - Oct 2016
Oct 2016

110360 mi
CVT issue (also called multitronic). 

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2003 Audi A4 4dr Wagon

turbocharged 170hp 1.8L I4 5-speed shiftable automatic AWD

Audi A4 in Washington, United States
Sep 2006 - Mar 2010
Oct 2006

43000 mi
HVAC air distribution servo motor/s hunting for position with car turned off. Automatic temperature regulation not working properly, air too warm. Air distribution not ccorrect. 
Dec 2006

46000 mi
Replaced air temperature control servo motor and air flow control servo motor. 
Audi A4 in Ontario, Canada
May 2008 - Apr 2010
Mar 2009

78120 mi

C $30
Coil pack failure, replaced with OEM part. 
Apr 2009

78740 mi

C $25
Had to replace coil pack. Second one in as many months. 
Apr 2010

86180 mi
coolant temp sensor 
Audi A4 in California, United States
May 2010 - Mar 2011
Mar 2011

73000 mi

US $1437
Coolant leak; hoses and seals replaced; 80k service completed at same time 

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2003 Audi A4 4dr Wagon

turbocharged 170hp 1.8L I4 5-speed manual AWD

Audi A4 in Ontario, Canada
Jul 2014 - Jun 2015
Sep 2014

115320 mi

C $205
Flex pipe rotted out, was replaced 
Dec 2014

121520 mi

C $25
Cylinder 3 misfire. Coil pack replaced 
Feb 2015

125860 mi

C $70
Diverter valve malfunctioned; replaced but caused turbo to leak coolant into the oil. Will need to be replaced at a later date. 
Apr 2015

128320 mi

C $630
Motor mounts had failed and were leaking. Mounts replaced. 
May 2015

131440 mi
Windshield wiper transmission seized. 
Jun 2015

131440 mi
Passenger side window regulator had gone bad. Front and rear control arm bushings had worn out. 
Audi A4 in Michigan, United States
Dec 2009 - Jul 2015
Dec 2009

71010 mi

US $260
Replace radiator Replace driver side rear diff seal Replace center diff output seal 
Jan 2010

73000 mi

US $100
Driver side HID ballast replaced 
Sep 2011

104000 mi

US $319
Replace all front suspension members. 
Oct 2011

104800 mi

US $18
Lower coolant temp sensor failed. 
May 2012

115000 mi

US $175
Front strut replacement 
Aug 2012

118300 mi

US $100
Replace all sway bar end links. 
Dec 2012

124000 mi

US $500
Turbocharger replaced. 
Mar 2013

128000 mi
Replace all 4 ignition coils. Replace main coolant temp sensor. 
Apr 2013

128700 mi
Replace primary O2 sensor. Driver rear door wiring broken. 
Jun 2013

132000 mi

US $300
Replace exhaust. 
Oct 2013

135700 mi

US $150
Replace front lower control arms, bushing shot. 
Apr 2014

143000 mi

US $5
Replace cracked dipstick tube. Replace rear license plate mount. Clip nuts rusted, making it impossible to remove the license plate. Audi of course doesn't just sell the clip nuts and removal destroys the license plate mount. Replace j plug and turbo coolant lines. 
May 2014

143300 mi

US $28
Replace cam cover and intake cam seal. 
Sep 2014

144000 mi

US $2000
Replace cam seal Replace VVT gasket Replace timing belt/water pump/tensioner Replace thermostat Replace passenger axle and seal Replace clutch 
Jul 2015

152000 mi
Car burned up. Probably from a leak in the turbo oil feed. 
Audi A4 in California, United States
Jul 2014 - Aug 2015
Aug 2014

104200 mi

US $2000
Transmission syncros/planetary gear shattered. 5-sp manual. Replaced clutch, clutch slave, transmission with same model from 2002 car with 124k miles 
Aug 2015

108000 mi

US $500
Alarm backup battery leaked and damaged alarm. Need to replace. No alarm beeps or warnings. 
Audi A4 in California, United States
Feb 2007 - Jul 2012
Apr 2011

120000 mi
All 4 coil packs replaced. 
Mar 2012

129000 mi

US $395
Rear coolant flange needed replacement. 
Jul 2012

131000 mi

US $650
Cylinder head and valves failed, small hairline cracks on 2nd cylinder. 
Audi A4 in New York, United States
Sep 2008 - Jun 2011
Jan 2010

92000 mi

US $200
One spark plug coil failed Exhaust pipe rust hole repaired by replacing pipe 
Aug 2010

96000 mi

US $400
Front wheel bearing was noisy. It was replaced with a new one. Original exhaust hanger was rusted off, new one welded on 
Audi A4 in Ontario, Canada
Feb 2009 - Dec 2011
Sep 2011

115320 mi

C $500
CV boot ripped - replaced whole shaft rt.side Front brakes done - over 60000 on that set 
Audi A4 in British Columbia, Canada
Feb 2016 - Jun 2018
Oct 2016

143100 mi

C $40
Progressively worsening leaking "J-plug" on the thermostat housing. Self replaced, was a PITA. Engine block breather tube deteriorated, then split and torn. Replaced this one part and successfully connected into remaining original breather system w/o the other tubing/ valve crumbling and breaking Part cost $45. 
Jun 2017

141360 mi

C $120
Vacuum line had small leak causing rough idle even though drivability and power were fine during acceleration and at speed. 
Audi A4 in Ohio, United States
Jun 2013 - Nov 2017
Jul 2013

82300 mi

US $350
Bad ABS controller module, removed and sent for repair. 
Jan 2015 Parking brake freezing 
Jun 2017

100000 mi
Got a new battery and in-cabin filter 
Oct 2017

100000 mi

US $500
replaced front pads and rotors, flushed fluid 

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2003 Audi A4 4dr Wagon

220-horsepower 3.0L V6 6-speed manual AWD

Audi A4 in Texas, United States
Aug 2009 - Mar 2010
Sep 2009

77000 mi

US $85
Air conditioner wasn't cooling properly. Shop recharged and tested system, and it is now cooling properly. 
Nov 2009

77900 mi
Water leak from engine compartment into driver's side footwell. 

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2003 Audi A4 4dr Wagon

Audi A4 in New Zealand
Dec 2017 - Jun 2018
May 2018

136400 mi

$800
Require new fuel pump 

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2003 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 6-speed shiftable CVT FWD

Audi A4 in California, United States
Jul 2009 - Mar 2010
Aug 2009

63000 mi

US $6100
I drove off the used car lot and five miles down the road the light came on. Coolant waring light came on and overheating. Replaced the water pump and timing belt. (Then we got the car back and the head gasket was blown and that's still not fixed.) the car has a blown head gasket and a cracked head. 
Sep 2009

64000 mi

US $756
 
Audi A4 in South Carolina, United States
Jul 2009 - Mar 2010
Aug 2009

80000 mi

US $600
Valve cover gasket was bad and leaking thus ruining 1 or more coilpacks 
Audi A4 in Australian Capital Territory, Australia
Jun 2010 - Jun 2011
Jul 2010

61380 mi
The rear tailights are common problem with this car. Muck builds up causing the light bulbs to short out.  
Audi A4 in California, United States
Jul 2010 - May 2011
May 2011

74000 mi

US $400
makes sounds when turning 
Audi A4 in Virginia, United States
Jul 2013 - Apr 2016
Jul 2015

138700 mi
car wouldn't start but battery was new. needed new starter solenoid. 

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2003 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 5-speed shiftable automatic AWD

Audi A4 in Massachusetts, United States
Apr 2016 - Apr 2018
Sep 2016

68000 mi

US $1100
Replaced the entire exhaust system. 
Audi A4 in Ontario, Canada
Feb 2008 - Jun 2011
Mar 2008

67580 mi

C $850
Replace camshaft tensioner gasket & valve cover. Replace secondary injection flange. Replace broken left side fog light assembly. Replace left front headlight washer pump. Repair homelink (garage door opener) module. 
Sep 2008

68820 mi
Right rear running light replaced.  
Dec 2008

71300 mi

C $150
Oil leak tracked to valve cover. Could have been because of the extreme cold that day (-35C). 
Mar 2009

74400 mi

C $400
Dealer replaced valve cover gasket. Water pump impeller blade was broken and replaced by shop. Timing belt replaced. Front right differential gasket dried out and leaked oil ... replaced by shop mechanic 
Jul 2009

81840 mi

C $450
Right rear differential gasket replaced 
Mar 2011

87420 mi

C $600
A/C recharged and  front signal light lamp replaced. 
Apr 2011

89280 mi

C $750
Wheel bearing replaced 
Audi A4 in Colorado, United States
- Feb 2010
Feb 2010

19000 mi
Drivers Side tail light burned out. 
Audi A4 in Texas, United States
Jan 2006 - Mar 2010
Jul 2006

28000 mi

US $19000
36000 miles took to dealer for leaking Valve cover gasket and they said a Motor Mount needed to be replaced also. Covered under warranty 
Mar 2007

36000 mi
Replaced radio due to lines in the display, Covered by Dealer under warranty 
Jan 2008

51000 mi

US $240
DIY change Coil Packs, One way valve and spark plugs. 
Audi A4 in Pennsylvania, United States
Feb 2011 - Mar 2011
Mar 2011

63800 mi

US $912
coolant leaking replaced a few clips, conduits and a coolant flange  replaced comfort control module part: $200 labor: $300 coolant leaking replaced a few clips, conduits and a coolant flange replaced comfort control module part: $200 labor: $300 
Audi A4 in Michigan, United States
May 2013 - Oct 2013
Jul 2013

114000 mi

US $350
Cam shaft positioning sensor replaced Replaced cam shaft positioning sensor. Prevents occasional stalls when car is cruising or decelerating and can't accurately sense the speed. 
Sep 2013

115000 mi

US $400
Wiper blade transmission assembly was corroded, and wouldn't move. Shop replaced the part and broke windshield in process. Replaced windshield no charge 
Oct 2013

115000 mi

US $1300
Independent shop couldn't read codes, dealer could. Independent shop replaced ABS rear left sensor, ABS, traction control light still on. Dealer recommended replace ABS control module (900), said sensor was not problem. 
Audi A4 in British Columbia, Canada
Jul 2015 - Jan 2018
Jul 2015

99200 mi

C $600
Fitted third heater core to the car Leaking trans fluid.Trans pinion output seal leaking.Pinion and output shaft seals replaced. 
Feb 2016

99700 mi

C $400
Turbo boost low. New Dump valve fitted. Update April 2017: didn't fix, turbo boost issue still present but not a big problem- drives ok. 
Oct 2016

105900 mi

C $170
Failed injector, dealer wanted to replace all 4 and all 4 plugs. Had car towed home and repaired myslef for $170. Flexpipe broken Repaired injectors myself. 
Jan 2017

109100 mi

C $270
Radiator leaking at seals (plastic to metal on passenger side) 
Jan 2018

130820 mi

C $30
HID bulb flickering 
Audi A4 in Utah, United States
Jan 2011 - Jun 2014
Apr 2011

120000 mi

US $250
water pump failed and leak all antifreeze on the road. Had to keep filling with h20 to get it home. Happened close to home. Did the serpintine belt and timing belt with tensioner too. 
May 2011

122200 mi

US $34
when I replaced the water pump accidentally let out the freon when I removed a/c cooler radiator. Put the 1st charge in with oil before rest of freon. system was sealed. 
Sep 2011

133000 mi

US $40
purchased part on Ebay and will repair it shortly. It is the alarm and module located in the trunks. 
Dec 2012

165000 mi

US $4750
Spark plug wires shorting out and warn out. 
Jun 2013

178000 mi

US $30
Replacing thermostat 
Jun 2014

198000 mi
Timing belt broke 
Audi A4 in Minnesota, United States
Jan 2005 - Mar 2010
Jul 2005

39000 mi
radio antenna amp replacement 
May 2006

44000 mi
wrong turn signal turning on then switching to correct signal after a random period of time, usually around 10 seconds 
Jul 2007

52000 mi

US $45
left rear wheel well liner loose, new liner installed 
Feb 2008

56000 mi

US $8500
oil pressure light on. engine replacement necessary due to oil sludge. 
Mar 2008

56500 mi
wiring harness to starter failed, engine would not start. 
May 2008

58000 mi
coil pack went bad causing engine to misfire. 
Feb 2009

75000 mi

US $35
Oil dipstick tube leaving residue inside, dripping into oil. 
Audi A4 in Indiana, United States
Jul 2013 - Jul 2014
Aug 2013

52000 mi

US $80
MIL light P0171 code. Determined that a check valve was cracked causing a vacuum/boost leak. removed and replaced and cleared MIL 
Jan 2014

54000 mi

US $100
Car not heating up. replaced thermostat 
Jul 2014

60000 mi

US $30
Misfire cylinder 1. Replaced coil pack 
Audi A4 in Georgia, United States
Nov 2008 - Mar 2010
Dec 2008

119000 mi

US $1400
Thermostat & Heater Core Replaced. 

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2003 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 5-speed manual FWD

Audi A4 in Illinois, United States
Apr 2003 - Mar 2010
Jun 2003

7500 mi
Sunroof operating on it's own, switch replaced under warranty. 
Jul 2003

8000 mi
Window switch cluster in drivers door not responding. Replaced under warranty. 
May 2005

35000 mi
Drivers side front wheel assembly making a clicking noise, loud enough to hear a block away. Dealer was "unable to reproduce symptom". 
Sep 2005

40000 mi
Passengers side xenon light severely flickering. Dealer service department was "unable to reproduce symptom". 
Dec 2005

45000 mi
ECU failure. Vehicle was still drivable, but the CEL was not able to be cleared. Replaced under warranty. 
Mar 2007

65000 mi

US $300
Fuel pump failed, repaired myself 
May 2007

67000 mi

US $220
Radiator leaking, replaced, did the repair myself 
Audi A4 in Maine, United States
Nov 2006 - Jul 2009
May 2009

61000 mi

US $500
Flange connecting evaporator to radiator....close to this anyhow. At 7 years old and 61,000 miles it will also need a new clutch soon we were told. Sounds normal for the age and mileage. 
Audi A4 in Texas, United States
Oct 2006 - Mar 2010
Nov 2006

50000 mi
Misfire when cold 
Feb 2007

52000 mi
Misfire at startup 
Audi A4 in Alabama, United States
May 2012 - Oct 2012
Oct 2012

156000 mi

US $2000
valve cover gasket cracked due to the hose providing the coolant and water breaking off got water and oil into the spark plugs 
Audi A4 in Connecticut, United States
Aug 2012 - Sep 2014
Jul 2014

157300 mi

US $250
Fuel pump started to make a loud whining sound during vehicle operation and caused issues when attempting to start the car. Replaced with an OEM fuel pump. 
Aug 2014

157600 mi

US $900
Original clutch began to slip. Replaced with new, aftermarket clutch with a higher torque rating. Original motor and transmission mounts replaced. 

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2003 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 5-speed manual AWD

Audi A4 in California, United States
May 2009 - Aug 2018
Jun 2009

90000 mi

US $1200
MIL was on. Thought problem was coil pack. Mechanic found cause of MIL to be rotten crankhouse vent hose, not coil pack. Had item replaced, slight valve cover leak noticed as well. 
Nov 2011

117000 mi
CEL came on, replaced the temperature sensor. 
Feb 2013

126200 mi

US $558
replaced ugly looking coolant and coolant tank. was told by tech that previous person might have added the wrong coolant for top off. tech advised another coolant flush would be ideal to flush out old/bad coolant. 
Jun 2013

127000 mi

US $180
rear left window regulator broke and was replaced with OEM part supplied by owner 
Jul 2013

127300 mi
oil level sensor light came up. replaced sensor. 
Aug 2015

140000 mi

US $250
grounding wires for license plate light went faulty 
Jun 2016

144000 mi

US $148
replaced mass air flow sensor 
Apr 2017

155000 mi

US $1798
ECU tune for big turbo. New injectors, battery, and spark plugs. Replaced bad 3-way valve & jet pump. stock turbo went bad, replaced with big turbo.  new coolant and expansion tank reservoir. 
May 2018

160000 mi

US $2000
Replaced bad boost pressure sensor 
Aug 2018

163919 mi

US $2500
chipped 1st gear, replace with used transmission clutch was slipping, replaced with upgraded clutch & flywheel kit coolant leak, replaced coolant flange from a previous job at a different shop replaced mass air flow housing replaced hood latch sensor and hood strut 
Audi A4 in Illinois, United States
Mar 2008 - Mar 2012
Jan 2008

41000 mi

US $400
headlight leveling system failed 
Jul 2008

45000 mi

US $300
coolant leak from rear of engine 
Aug 2008

45250 mi

US $200
coil failed 
Jan 2009

45250 mi

US $4000
AWD system failed causing poor handling 
Apr 2011

83800 mi
auto leveling lights failed coil failed 
Oct 2011

90500 mi

US $600
Plastic check valve failed causing a leak 
Audi A4 in Ontario, Canada
Jan 2009 - Mar 2010
Jan 2009

89900 mi

C $100
Replaced first coil pack (Failure) 
Feb 2009

89900 mi

C $1200
Water pump replacement. 
Audi A4 in New Hampshire, United States
Aug 2009 - Apr 2012
Jul 2011

94700 mi

US $900
Bearings were going. Needed to be replaced. Normal wear and tear 
Audi A4 in Wisconsin, United States
Nov 2008 - Mar 2010
Dec 2008

65000 mi

US $90
Windshield washer pump had to be replaced, because it was not functioning and lead to loss of fluid 
Audi A4 in Minnesota, United States
- Feb 2007
Dec 2006

50000 mi

US $50
Replaced all 4 coilpacks (under warranty) 
Jan 2007

54000 mi

US $50
Replaced trunk switch (under warranty) 
Feb 2007

55000 mi

US $50
Replaced starter (under warranty) 
Audi A4 in Florida, United States
May 2012 - Jul 2012
Jun 2012

129000 mi

US $600
Oil pressure light came on, pickup tube in oil pan was clogged, replace tube. Also replaced engine mount. 
Audi A4 in Wisconsin, United States
Sep 2007 - Jul 2014
Mar 2007

43000 mi

US $100
ashtray mechanism failure 
Apr 2007

44000 mi

US $100
valve cover gasket leak, repaired. 
Aug 2007

48000 mi

US $50
driver main window switch assembly failure 
Sep 2007

49000 mi

US $2000
clutch failure 
Oct 2007

50000 mi

US $200
cracked radiator seam 
Dec 2008

62000 mi

US $60
Typical thermostat failure. replacing part takes 2-3 hours. 
Jan 2009

62000 mi

US $300
Car unable to start, no diagnosis so far. 
Mar 2009

63000 mi
Low oil pressure light, checked oil pick up tube inside oil pan and found nothing. Cleaned oil tube and performed oil change, also cleaned oil pressure switch contact. Light did not return. 
Feb 2013

99800 mi

US $150
Replaced mass air flow sensor 
Apr 2013

100800 mi

US $400
Broken driver side inner CV boot, joint failing. Replaced both front axles as preventative. 
Jun 2013

104000 mi

US $20
Suction jet pump failed, replaced unit 
Dec 2013

109000 mi

US $10
Replaced crank position sensor 
Jun 2014

115000 mi

US $200
Driver door wiring harness 
Audi A4 in Alberta, Canada
Apr 2015 - Oct 2015
Oct 2015

94860 mi

C $60
Wiring between chases and door wore out.spliced and replaced. 
Audi A4 in California, United States
May 2014 - Jun 2014
Jun 2014

116000 mi

US $600
Cracked pcv valve, and several other vaccuum valves in the engine area. 
Audi A4 in Connecticut, United States
Mar 2015 - Jul 2018
Jun 2015

114000 mi

US $100
Failure of the glove box door hinges 
Sep 2015

118000 mi

US $100
Replaced switch 
Apr 2016

124500 mi

US $1250
CEL 2181 cooling out of range. Replaced thermostat and manifold. Alternator bearings were getting noisy. Alternator removed to replace thermostat, so got a new one. Serpentine belt and tensioner replaced 
Sep 2016

129000 mi

US $850
Replace RF wheel bearing Replace flex pipe in exhaust 
Jun 2017

135000 mi

US $500
Small coolant leak traced to famous coolant flange Windshield washers had low pressure Rear seat backs not locking in place 
Mar 2018

149000 mi

US $2500
Brake pads and rotors 
Audi A4 in West Virginia, United States
Jun 2016 - Aug 2017
Oct 2016

121800 mi

US $180
Exhaust separation. Stainless steel flex pipe was used to replace the separated section. 
Mar 2017

131000 mi

US $700
Front driver wheel bearing replacement and 4 wheel alignment 
Audi A4 in North Carolina, United States
Apr 2009 - Jul 2010
Nov 2009

70000 mi

US $275
Ignition Coils #1 and #2 went bad causing engine light to come on. This caused the car to shudder and was advised not to be driven and was towed to a auto shop recommended by a friend who is good at import euro cars. THERE IS A Campaign NOW. 
Mar 2010

72000 mi

US $250
The rear driver side window regulator broke.  
Apr 2010

72000 mi

US $250
The rear passenger side window regulator broke. Currently waiting to see if the front regulators break. 
Audi A4 in Iowa, United States
Dec 2011 - Jan 2012
Jan 2012

US $1000
Misfiring Cylinder Ignition Coils Oil in Cylinders 
Audi A4 in Washington, United States
Oct 2008 - Apr 2011
Jul 2008

52000 mi

US $400
replaced coolant flange at rear of engine block - leaking. 
Nov 2009

60000 mi

US $570
thermostat failed, replaced. replaced defective thermostat. 
Aug 2010

67000 mi

US $350
Brake fluid reservoir leaking at cap. Replaced cap and reservoir; flushed system. 
Audi A4 in Pennsylvania, United States
Sep 2010 - Apr 2017
Apr 2014

76000 mi

US $1200
There was a leak from the steering column. I have had this problem for awhile. I was told I need a new rack and pinion. 
Jan 2016

82000 mi

US $650
Coolant light kept coming on. Found a leak in one or two hoses going into coolant system and worn ring. Will give move details when I pick up car tomorrow. 
Apr 2017

90000 mi

US $1266
Removed and replaced timing belt, timing components and water pump. Drained engine oil. and removed and replaced engine air filter. Checked fluids. Inflated and adjusted tire pressure. Removed and replaced engine oil level module; 
Audi A4 in Massachusetts, United States
May 2010 - Jun 2011
Jan 2010

75000 mi

US $675
valve cover gasket worn, had it replaced coolant shooting out from rear of engine. Replaced Rear engine flange. 
Jul 2010

85000 mi

US $500
fuel filter clogged, resulting in a burnt pump. Replaced fuel filter as well. 
Audi A4 in Connecticut, United States
May 2011 - Jul 2011
Jul 2011

75000 mi
Sold with oil leak in engine near timing belt area. 

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2003 Audi A4 4dr Sedan

220-horsepower 3.0L V6 6-speed manual AWD

Audi A4 in Georgia, United States
Feb 2008 - Sep 2011
Aug 2008

147000 mi

US $110
Replaced noisy accessory belt tensioner. Replaced belt while I was in there. Noise is gone. 
Nov 2008

153000 mi

US $35
It was just a cracked expansion tank that was replaced.  
Apr 2009

157000 mi

US $200
Pre Cat O2 sensor on passengers side had short. Replaced both sensors on B1 Replaced coolant temp sensor to clear random misfires only noticeable with diagnostic monitor. This was a long term problem that was fixed by random maintenance. 
Oct 2009

165000 mi

US $110
Replaced pre and post O2 sensors on Bank2.  Replaced check valve and broken vac line as well. 
May 2011

188000 mi

US $500
Replaced bad upper control arms and sway bar links. Bought kit to replace all because it was cheaper. 
Jul 2011

189000 mi

US $100
it was just the drivers side cv boot. replaced the whole axle. 
Audi A4 in Nevada, United States
May 2008 - Jun 2018
Nov 2008

90000 mi

US $50
Coolant temp sensor intermittent failure. Mirrors move when car unlocked with remote. Headlight switch backlight led inorperative. Center differential output shaft seal leaking (fourth time this year). coolant expansion tank replaced because it was leaking. 
Feb 2010

122400 mi

US $700
replaced catalytic coverter 
May 2010

127000 mi

US $250
replaced front upper control arms 
Jun 2010

131000 mi

US $10
power steering pump noisy, flushed and refilled power steering fluid. no more noise 
Jan 2011

140000 mi

US $1900
a/c compressor seized. compressor and condenser replaced 
Apr 2012

170800 mi

US $600
a/c compressor replaced front wheel bearing replaced 
Mar 2014

204000 mi

US $15
clutch pedal switch replaced 
Dec 2014

209000 mi

US $250
front axle cv boot leaking. replaced axle 
Feb 2015

210400 mi

US $140
replaced battery 
Sep 2016

236000 mi

US $20
rear window regulator broke, bought plastic parts and replaced. 
Nov 2016

237000 mi

US $7
coolant temp sensor gasket failed. 
Jan 2017

215300 mi

US $80
replaced ballast on driver's side HID headlight. 
Apr 2017

246605 mi

US $230
replaced upper and lower control arms 
Dec 2017

262000 mi

US $7
rear window regulator broke. replaced regulator 
Jan 2018

263000 mi

US $120
front axle boots replaced, one had failed wheel bearing replaced 
Audi A4 in Wisconsin, United States
- Jun 2008
Jun 2008

75000 mi
Oil pressure sending switch. 
Audi A4 in Pennsylvania, United States
- Feb 2009
Oct 2007

51739 mi

US $178
Repair clutch pedal switch 
Nov 2007

55619 mi

US $25
Replace right rear tail light 
Jan 2008

59275 mi

US $29
Replace interior light under right front seat 
Feb 2008

60668 mi

US $29
Replace left rear tail light bulbs 
Aug 2008

70899 mi

US $1351
Replace all coil packs, evap system purge valve Replace front brake pads and rotors Replace driver window switch module 
Jan 2009

80328 mi

US $43
Replace right front turn signal 
Feb 2009

82766 mi

US $280
Repair license plate bulb assembly 
Audi A4 in South Carolina, United States
May 2011 - Feb 2017
Apr 2014

125800 mi

US $1500
Freeze Plug on the waterpump began to leak. Waterpump was still good, with only 40K miles on the pump. Water pump had to be replaced to stop the leak. $1500 repair b/c behind the timing cover. 
Mar 2015

142000 mi

US $500
coolant leak 
Oct 2015

155500 mi

US $175
ABS system failure, linked to speedometer. CHEAPABS.COM will make the repair for $150, but must remove the module (2 hours work). 
Dec 2015

158000 mi

US $500
Driver window's motor failed for the 2nd time. Very expensive each time. 
Aug 2016

173000 mi
2nd repair of pipe on rear of engine 18 months ago. Warrantied, otherwise $700 cost. 
Feb 2017

178000 mi
Tie rods worn out. 
Audi A4 in Michigan, United States
Apr 2014 - Apr 2018
Apr 2016

131580 mi

US $516
Replaced front and rear shocks; aligned vehicle Replaced output shaft seal (rear) and drive axle seal (rear; transmission fluid replaced accessory belt tensioner and serpentine belt Right front wheel bearing replaced after a noise developed soon after previous repair trip. 
Aug 2017

148000 mi

US $1200
A/C pump froze up and destroyed serpentine belt and one pulley. Together they cost about $1100 plus a standard oil change. 
Mar 2018

152000 mi

US $500
Replaced coil packs due to CEL codes 
Audi A4 in Pennsylvania, United States
Mar 2014 - Apr 2018
Mar 2014

116000 mi

US $650
Clutch & Flywheel needed replacing. Dual Mass Flywheel failed and was causing drivetrain vibration 
Jul 2014

124000 mi

US $700
replaced all four shocks with Koni Yellow Sports & replaced front control arms. 
Nov 2015

135000 mi

US $120
Coil pack replacement 
Oct 2017

147500 mi
Intake actuator drive unit developed internal vacuum leak. I plugged a vacuum like associated with the leak. Now only 1/2 of the actuator draws vacuum. Not a perfect fix, but its getting the job done. 
Apr 2018

150000 mi

US $75
Replaced upstream oxygen sensor on the drivers side 
Audi A4 in New York, United States
Jun 2014 - Jan 2018
Oct 2015

140300 mi

US $400
Replace axle. Torn cv joint 
Aug 2016

150000 mi
worn rubber hoses 
Audi A4 in Pennsylvania, United States
Dec 2010 - Dec 2016
Dec 2010

132000 mi

US $510
Change OEM silencer (Middle mufflers) 
Aug 2012

147900 mi

US $1500
Changing the cam seal of the right blank 
Nov 2014

161300 mi

US $230
Brake switch; 
Audi A4 in California, United States
Apr 2013 - May 2013
May 2013

50000 mi

US $900
rack and pinion broke 
Audi A4 in Michigan, United States
May 2009 - Jan 2016
Apr 2011

88000 mi

US $2500
Pcv valve froze. Blew out seals. oil leaks everywhere.new pcv valve timing belt and seals. 
Jan 2014

125000 mi

US $50
Windshield wiper arm broke, brittle plastic broke in sub zero cold, dealer only part, because of the weather the car was not usable for the weekend 
Jan 2016

111000 mi

US $50
Exhaust connector rusted thru 

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2003 Audi A4 4dr Sedan

220-horsepower 3.0L V6 5-speed shiftable automatic AWD

Audi A4 in Michigan, United States
Jun 2010 - Jun 2011
Jul 2010

80000 mi

US $800
AC compressor has failed for the fourth time in 4000 mi. First time it was the bolts that backed out, caught the pulley and destroyed the comp. Second time, internal modulator failed and third time the clutch was smoked. 
Audi A4 in Utah, United States
Jan 2007 - Jan 2016
Jul 2007

43878 mi

US $850
replace failing power steering pump 
Aug 2008

44765 mi
trunk release switch is broken. not repaired yet 
Jan 2009

53465 mi

US $800
replace two oxygen sensors 
Feb 2009

54547 mi

US $250
replace two crankcase breather tubes that had cracked 
Mar 2010

62830 mi

US $363
windshield wiper transmission replaced replace windshield wiper transmission 
Aug 2012

86600 mi

US $1250
Replaced glovebox hinge. 
Dec 2015

108000 mi

US $250
Yellow oil sensor display on instrument cluster. Replaced oil pressure sensor. 
Audi A4 in Ontario, Canada
Sep 2015 - Jan 2018
Dec 2015

171120 mi

C $35
Leaking windshield washer hose 
Mar 2017

208320 mi

C $2000
Timing belt, rollers water pump Valve cover gaskets replaced Replaced flex joints in exhaust new front brakes and lines 
Jan 2018

212040 mi

C $350
Gas smell in cabin, replaced purge valve 
Audi A4 in Puerto Rico
Jan 2004 - May 2012
Jan 2004

22000 mi

US $500
front windshield 
Jan 2005

32000 mi

US $500
front windshield 
Jan 2008

63000 mi

US $700
steering pump 
Jun 2008

65000 mi

US $200
drivers side window button 
Oct 2008

68000 mi

US $200
windshield wiper repair 
Jan 2009

71000 mi

US $1200
timing belt and steering pump 
Feb 2009

71000 mi

US $300
motor for windshield wipers 
Mar 2009

71000 mi

US $200
hood latch release 
Mar 2011

84000 mi

US $1700
replaced steering rack that was leaking 
Aug 2011

66000 mi

US $350
Exhaust system was making a loud noise. Took it to local mechanic who recommended a Meineke shop who would weld in a new piece. both sides of the car had to be done. 
Audi A4 in Ontario, Canada
Jun 2010 - Mar 2011
Oct 2010

94000 mi

C $100
trans. left hand output seal leaking. seal replaced and diff. fluid topped up. 
Feb 2011

99200 mi

C $412
Front crankcase oil seal popped out of housing, massive oil leak. 
Audi A4 in Connecticut, United States
- May 2008
Feb 2008

62000 mi

US $2800
CAT converter 
Mar 2008

63000 mi

US $400
Driver's window (regulator) 
May 2008

68000 mi

US $1200
Fuel pump ... died in the fast lane 
Audi A4 in Connecticut, United States
- Aug 2007
Mar 2005

50500 mi

US $190
The gas pedal position sensor malfunctioned, causing the car to accelerate out of control. I needed to put the car in neutral in order to get it stopped! The part failed just 500 miles after the warranty ran out. The total repair cost was $190. 
Jun 2006

71000 mi

US $600
The antenna selection module in the radio failed, which caused the radio to lose reception for most FM stations. The repair for this was $400. The car also needed new front brake pads, which was $200 with parts and labor. 
Aug 2007

89000 mi

US $150
The change tray/"credit card holder" latch broke, causing it to stick open. The part was $90, and labor and tax were $60. 
Audi A4 in Arkansas, United States
Jul 2012 - Jan 2016
Aug 2012

110800 mi

US $200
I have the 3.0 V-6. Ignition coils were replaced Dec 2010 with new, improved design under recall. One of the new ignition coils briefly failed (set code). Replaced it. 
Oct 2013

125500 mi
Ck engine light on intermittently. Code diagnosis indicates one catalytic converter needs to be replaced. Discussed with several mechanics and decided not to replace. No drivability issues and likely will not impact operation for a long time if ever. 
May 2014

134300 mi

US $1150
Replaced water pump 
Oct 2014

140300 mi

US $170
Replaced faulty crank position sensor 
Apr 2015

145500 mi

US $200
Replaced one faulty ignition coil. 
Aug 2015

150300 mi

US $700
Engine cooling module replaced. Fault prevented the electrically driven engine cooling fan from turning on. 
Audi A4 in Colorado, United States
Jan 2010 - Jan 2013
Sep 2010

101000 mi

US $1
Washer pump went out. Replaced with new part bought off ebay for $12. Problem fixed. 
May 2011

106000 mi
Ignition Coils replaced under warranty. 

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2003 Audi A4 2dr Convertible

turbocharged 170hp 1.8L I4 6-speed shiftable CVT FWD

Audi A4 in Texas, United States
Mar 2010 - Jun 2018
Mar 2014

49000 mi

US $900
Leaky gasket 
Jul 2017

60000 mi

US $389
Oxygen sensor faulty, Replaced. 
Audi A4 in Colorado, United States
Dec 2013 - Dec 2014
Dec 2013

77000 mi

US $25
Replace temp sensor because readout was intermittent 

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2003 Audi A4 2dr Convertible

turbocharged 170hp 1.8L I4 5-speed shiftable automatic AWD

Audi A4 in California, United States
May 2016 - Oct 2016
Oct 2016

77000 mi

US $500
Electric convertible top stopped working.mechanic friend is attempting to diagnose the problem 

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2003 Audi A4 2dr Convertible

220-horsepower 3.0L V6 6-speed shiftable CVT FWD

Audi A4 in Nebraska, United States
Apr 2010 - Mar 2012
May 2010

44000 mi

US $14500
Replace the coil packs, oil change, and replace 4 tires. 
Audi A4 in Florida, United States
Aug 2013 - Sep 2013
Aug 2013

45000 mi

US $2200
Replaced ecm 
Audi A4 in Alabama, United States
Feb 2009 - Mar 2010
Mar 2009

49000 mi

US $1700
Check engine light on. Car 'spluttering' at idle. New Cam Shaft seals identified as problem area. 
Audi A4 in California, United States
May 2015 - Jun 2018
Jun 2015

68000 mi

US $23
Sensor detected:Convertible top not secured despite top being closed. This fault caused air conditioner to turn off. Not fun when air temp over 100 degrees. 
Nov 2016

81900 mi

US $600
Passenger window switch needed replacement. Rear window regulator was replaced as window refused to close at halfway point. 
Mar 2017

84000 mi

US $140
Window washer unit inop and not holding washer fluid. Cause was wiring short. 
Mar 2018

91000 mi
Passenger Seatbelt locks up too soon. 
Audi A4 in Arkansas, United States
- Feb 2009
Feb 2009

83300 mi

US $202
Coil #2 replaced 

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2003 Audi A4 / S4

turbocharged 4-cylinder diesel manual 2WD

Audi A4 in Ireland
May 2009 - Jun 2011
Feb 2010

138880 mi

€275
Tensioner pulley which tensions auxillary belt for power steering, compressor and alternator went faulty. Front bumper and radiator had to be removed to get at the tensioner! 

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2003 Audi A4 / S4

Engine not specified

Audi A4 in California, United States
Feb 2009 - Jun 2011
Mar 2009

62000 mi

US $1200
Timing belt replaced due to water pump leakage, and valve seal replaced due to oil leakage. 
Feb 2010

73000 mi

US $300
Repaired engine bonnet release lever 
Audi A4 in California, United States
Nov 2006 - Mar 2010
Jan 2007

81000 mi

US $1300
Rear windshield sprayer not working.  Windshield front [washer] system leaked 500USD repair. 
Audi A4 in Texas, United States
Nov 2006 - Apr 2007
Dec 2006

43000 mi
Carmax told me I had engine sludge. Audi mechanic looked at oil cap, said it was bad sludge, but after two days with my car they said it was normal. Also replaced cupholder, battery, ball joint, and flushed brake fluid. Rear seat cupholder wouldn't pop out of center armrest, leaving the backseat with no cupholders. 
Audi A4 in Poland
May 2010 - Jun 2011
Sep 2010

138880 mi

$1700
camshafts got broken (2.5tdi) with automatic gearbox, that was weird 
Oct 2010

140120 mi
Left power windows, right power locks not working. Open on front right door, found water on circuit board. Dried and cleaned this with alcohol (spiritus), and windows started working, but locks still not. 

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2003 Audi A4 / S4 4-door

turbocharged 4-cylinder diesel manual AWD

Audi A4 in Ireland
Apr 2007 - Jul 2017
Jan 2008

96100 mi

€1277
Leak around the pollen filter. Water leaked in on top of ECU and there were multiple electrical problems due to then. Leak found and repaired, ECU replaced. Delay in supply of replacement ECU. 
Jan 2011

176080 mi

€435
Front driver's side wheel bearing replaced. 
Jul 2014

276600 mi

€150
Passenger side track rod end worn after 445,000 KM was replaced 
Sep 2014

280240 mi

€300
Intercooler had a crack, needed to be replaced. 
Jul 2015

295400 mi
After 475K replaced bushings, rear shocks and springs. 
Mar 2016

314340 mi

€100
Rear wiper motor needed to be replaced 
Jun 2016

318680 mi

€100
The syphon tube where the dipstick goes cracked and had to be replaced. Coolant pipe perished and cracked 
Sep 2016

324260 mi
Intercooler replaced after crack appeared. 
Dec 2016

328600 mi

€500
Replaced 3 x calipers which were seized. 

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2002.5 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 6-speed shiftable CVT FWD

Audi A4 in Nebraska, United States
Sep 2006 - Jun 2011
May 2007

69000 mi

US $70
Driver side front indicator bulb housing got burnt out, possibly due to a bad grounding issue. Audi dealer in Omaha NE on the first visit replaced bulb and on the second visit 'supposedly' replaced turn signal indicator stalk. An independent mechanic fixe 
Jun 2007

70000 mi

US $180
Wipers siezed. Mechanic had to open up the linkages and grease them. Charged me labor at 90$ for 2 hours. 
Sep 2008

86000 mi

US $450
Wiper linkage replaced. 
Sep 2010

114000 mi

US $900
ABS control module failed. Brake Light flashing in the dashboard. 

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2002.5 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 5-speed shiftable automatic AWD

Audi A4 in Virginia, United States
Nov 2008 - Apr 2010
Aug 2008

90000 mi

US $800
PRNDS all light up while in tip tronic...Audi thought transmission could be failing. Replaced shifter tract. Security System beeping three times upon startup and would die if left still for 2 or 3 days. Finally found bad cell in battery. Fixed the issue. 
Oct 2008

93000 mi

US $30
Extreme vibration after having tires installed balanced again and again. Issue still present. 
Nov 2008

94500 mi

US $368
CV half shaft installed...purchase part myself (Audi charges 800 just for the part) and had a mechanic install it. 
Dec 2008

96000 mi

US $1500
Vibration continues...thought to be a CV axle. Replaced did not fix.  Took in to dealer for vibration. Was told a bad tire was at fault or was out of round.  Parasitic draw on battery. 8 hrs diagnositic time. Replaced door wiring harness and door latch. VERY EXPENSIVE repair.  
Jan 2009

97000 mi

US $120
Owner noticed fluid leaking from underneath car. Thought to be CV axle leaking from previous install. Steering was leaking from rack and pinion. Decided to wait until summer.  
Mar 2009

98000 mi

US $240
Traction control light came on and dealer identified as brake light sensor being bad. Cruise control would work on and off. Brake light sensor replaced and originally installed incorrectly faulting the brake pressure sensor. Dealer fixed both issues 
Apr 2009

100000 mi

US $500
Upon last trip to Audi told me I had oil leaking from the valve cover gasket. recommended also to change the cam seals. They wanted 700 to replace at dealer. Took elsewhere had motor mounts also changed and valve cover for 500.00  
Aug 2009

102000 mi

US $200
check engine light illuminated. Took to dealer and was told was vacuum leak( which explains rough idle i've had for a year). Repaired 4ft of hose and air jet. Repair did not fix rough idle. Am returning to shop next week. 
Apr 2010

110000 mi
Rough idle still present. Audi wanted to replace everything vacuum related for rough idle and do a intake manifold cleaning...declined...then sold to my father 
Audi A4 in Alberta, Canada
May 2007 - May 2009
Jun 2007

55490 mi

C $100
Check engine light flashing, ignition coil #4 replaced 
Jul 2007

56420 mi

C $500
Driver side door speaker connection intermittent, likely due to poor connection. Wires reconnected, connectors reset. problem resolved 
Jan 2009

64480 mi

C $450
Rear coolant had been leaking for some time and as a result, no heat was coming into the cabin. Coolant was also due for a flush.  During repair, located 2-3 more gaskets on the engine which also needed replacing. Cheap parts but expensive labour. 
Apr 2009

66960 mi
Small pin suddenly snapped out of the glove box, causing the glove box door to drop down immediately when opened. Found solution online easily. Reinserted the pin back into the dampener/hinge, fixed in less than 1 min. 
May 2009

66960 mi
It probably needed some steering or cv joint work when I sold it. The car vibrated a lot when turning It was getting too expensive to keep. I'll never own a German car out of warranty again. 

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2002.5 Audi A4 2dr Convertible

220-horsepower 3.0L V6 6-speed manual AWD

Audi A4 in Great Britain
Nov 2015 - Nov 2016
Sep 2016

103000 mi

£70
there was a water leak at the back of the engine. It was a heater exchange unit that was faulty. a replacement was bought second hand off ebay for £25. the engine has to be slackened in it mounts and rocked forward for access. 

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2002 Audi S4 4dr Wagon

turbocharged 250hp 2.7L V6 6-speed manual AWD

Audi S4 in Washington, United States
Dec 2011 - Apr 2012
Jan 2012

US $2000
Head gasket failure 
Mar 2012

97000 mi

US $1750
Rear main oil seal leak 

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2002 Audi S4 4dr Wagon

turbocharged 250hp 2.7L V6 5-speed shiftable automatic AWD

Audi S4 in Minnesota, United States
Mar 2013 - Sep 2017
Feb 2015

184600 mi

US $300
POS sensor was bad 
Audi S4 in Massachusetts, United States
May 2009 - Mar 2010
Jun 2009

99000 mi

US $950
Replaced - breather hose, crankcase vent valve, valley pan gasket, etc. Oil change. 

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2002 Audi S4 4dr Sedan

turbocharged 250hp 2.7L V6 6-speed manual AWD

Audi S4 in Georgia, United States
Feb 2011 - Apr 2011
Mar 2011

115000 mi

US $700
Both front axles rebuilt due to leaking CV boots. I chose to rebuild instead of replacing with aftermarket. All joints/boots rebuilt or replaced. 
Audi S4 in Connecticut, United States
Mar 2013 - Jun 2013
May 2013

52600 mi
Timing belt plus water pump, upgraded diverter valve, replaced gaskets (leaking minimally). 
Audi S4 in Ohio, United States
Aug 2007 - Nov 2011
Oct 2008

61000 mi

US $200
Leaking coolant after-run or auxiliary pump. Pump located in the "V" of engine beneath the intake manifold. Also required replacement of intake manifold gaskets as this is mandatory with R&R of intake manifold. 
May 2009

67000 mi

US $40
CEL came on - system too lean & audible vacuum leak. Crack/leak in 4-way vac connector & non-return valve 078 611 933B. Temporary fix using RTV silicone made. Purchased part and replaced w/some vac lines. Car fully repaired in 4 hrs total repair time. 
Dec 2009

73000 mi

US $40
Non-return valve in emissions system cracked causing a vacuum leak and a lean condition which triggered the CEL. Installed new valve (part is a dealer only item). 
May 2010

78000 mi

US $40
Coolant Temperature sensor failed - initially erratic and then total failure of temperature gauge response. Replaced sensor with improved design (VW/Audi part) and gauge now works properly. This sensor outputs to both dash gauge and ECU. 
Feb 2011

84000 mi

US $415
Right (passenger) rear wheel bearing was bad and was replaced. Problem evident from noise and vibration. Oil leak coming from recess on front of engine where crank lock pin is inserted during TB change. Plug and o-ring replaced. May not be only oil leak, but it was a major one. 
Sep 2011

90000 mi

US $2400
Water pump bearing failed; noise indicated problem was possibly severe so car towed to prevent more damage. Timing belt,water pump, tensioners and idlers/rollers were all replaced. This was only 20k miles since same service was last done. 

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2002 Audi S4 4dr Sedan

turbocharged 250hp 2.7L V6 5-speed shiftable automatic AWD

Audi S4 in Vermont, United States
Feb 2010 - Jun 2011
Mar 2010

146000 mi

US $140
Wheel bearing wore out at 146k, don't think I can complain. 
Audi S4 in New York, United States
Feb 2010 - Dec 2012
Mar 2010

112000 mi

US $500
o2 sensor went bad. Replaced all 3 to avoid going back at later time. 
Audi S4 in Illinois, United States
Dec 2008 - Jun 2018
Dec 2011

108000 mi

US $850
Oil cooler was leaking into cooling system. 
Sep 2013

125000 mi

US $1500
Alternator went bad. Had alternator replaced. Very labor intensive. Wheel bearing was failing. Replaced wheel bearing. Was getting very noisy. 
Nov 2013

127000 mi

US $1503
Heater Core went bad. Needed to be replaced. Very labor intensive. 
Mar 2014

131000 mi

US $500
Left Rear wheel bearing what bad. Had to replace. 
Aug 2014

137000 mi

US $715
I ordered the auxiliary cooling fan online and did that myself. (I now know how to put the S4 into 'service position' sheesh, so much work just to be able to get at the fan. The fan was $150. (Audi wanted $700 installed). I also ordered a used Throttle Body online for $250 and installed that. It was throwing a fault code and I have to make it qualified to pass for the bi-annual emissions test that is due. (Can you believe Audi wanted $1100 for the Throttle Body-part only.) New spark plugs. Oxygen sensor. 
Sep 2014

139000 mi

US $450
Engine coolant temp sensor failure was causing ECM to think that even when engine was cold, it was at operating temp. This made vehicle very difficult to start and keep running, since it was not receiving an enriched air-fuel mix. 
Oct 2014

139500 mi

US $310
Twice had it towed on flat bed to Audi. The brakes started applying themselves, to the point of near lock up. They could not reproduce it so eventually felt to start with replacing front brake lines. Unsuccessful. 
Nov 2014

141000 mi

US $700
Audi stripped Both front bleeder valves in calipers. Bought after market for $120 each instead of Audi's $840. (dual piston). Merlin's correctly diagnosed master cylinder. Good job. Also replaced FR axle. 
Mar 2015

146000 mi

US $402
No heat. Had to have heater core flushed. 
Mar 2016

161000 mi

US $215
I always replace my own brake pads and rotors but on the rear it needed the calipers replaced. Pistons were froze. 
Dec 2016

165000 mi
Fuel pump went bad. Remove and replace. 
Jan 2018

172000 mi

US $300
LR caliper froze up, also LR brake house callapsed. 

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2002 Audi A4 4dr Wagon

turbocharged 170hp 1.8L I4 5-speed shiftable automatic AWD

Audi A4 in Wisconsin, United States
Nov 2013 - Jun 2016
Mar 2014

131000 mi

US $970
Wheel bearings were very loud 
Jul 2015

161700 mi

US $1600
Head gasket blew oil in coolant 
Audi A4 in British Columbia, Canada
Jul 2008 - Mar 2009
Nov 2008

60140 mi

C $70
License plate bulb, but screw was locked/stripped/stuck, owner unable to replace. 
Audi A4 in Minnesota, United States
Nov 2009 - Dec 2011
Apr 2011

91500 mi

US $60
Coil pack failure, created a very bad miss and could only be driven short distances.  temp sensor, only affected gauge 
Oct 2011

98000 mi

US $30
Replaced leaking rear coolant flange 
Dec 2011

98000 mi
pcv return hose needed replacing when sold 

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2002 Audi A4 4dr Wagon

turbocharged 170hp 1.8L I4 5-speed manual AWD

Audi A4 in Alberta, Canada
Oct 2014 - Dec 2014
Nov 2014

92480 mi

C $950
Replaced Head for valve issue. 
Audi A4 in Alaska, United States
Dec 2007 - Jul 2017
Mar 2010

37000 mi
Car would not start. Would not turn over. Repair shop could not duplicate problem. 
Jul 2015

72000 mi

US $400
Running poorly and making noises. Timing belt was about to go and was repllaced before any damage was done. Also, regular maintenance was done. 
Audi A4 in Maryland, United States
Nov 2008 - Mar 2010
Dec 2008

85000 mi

US $400
Rear coolant flange cracked. 
Audi A4 in Utah, United States
Aug 2017 - Sep 2018
Nov 2017

154000 mi

US $50
Replaced o2 sensor 

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2002 Audi A4 4dr Wagon

220-horsepower 3.0L V6 6-speed manual AWD

Audi A4 in California, United States
Mar 2012 - May 2014
Nov 2012

129400 mi

US $250
Located, purchased and replaced both rear tail light housings due to leakage. 
Nov 2013

139000 mi

US $175
Backup lights always on. Switch located on transmission (?) failed and had to be replaced. 
Jan 2014

133000 mi

US $575
Serpentine belt and tensioner pulley 
Mar 2014

143000 mi

US $250
Coolant overflow tank often low. Tests cannot find any leaks. 
May 2014

143000 mi
Never went further to fix coolant leak, probably a sensor/seal. Same with oil leaking around I believe was spark plug seals? Lots of other things I never fixed for several years. e.g. leaking sunroof bad pump for windshield wiper fluid front end work electric window intermittent working and other electricals, etc. Had to stop throwing $ down a deep dark hole. Fuel pump died, traded car. 
Audi A4 in California, United States
Jan 2010 - Jun 2011
Feb 2010

100000 mi

US $2000
Left front axle replaced - boot torn. 
May 2010

101900 mi

US $695
replaced radiator due to leak replaced radiator due to leak 
Sep 2010

105000 mi
check engine light - code indicated cat converter/sensors but no obviously problem found. Reset. 
Dec 2010

108000 mi

US $100
leak in headliner from sunroof-was "fixed" by dealer last year. Front drains are ok-back drains totally clogged-shop said they couldn't clear w air rec going back tp-dealer.Dealer said they will try a thin wire tool from Audi. No appt yet. 

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2002 Audi A4 4dr Wagon

220-horsepower 3.0L V6 5-speed shiftable automatic AWD

Audi A4 in Utah, United States
Jun 2010 - Jun 2012
Aug 2010

99200 mi

US $1500
Torque Converter replacement 
Jun 2012

US $1100
Odd noise. Turned out to be some belts that needed replacing. 
Audi A4 in Virginia, United States
Sep 2006 - Jan 2009
Feb 2007

71000 mi

US $100
Catalytic converter tripped CEL. Mechanic did not road test after reset because of icy road conditions, but CEL has not come back on. 
May 2008

89000 mi

US $650
Inner CV boot. Front control arms. 

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2002 Audi A4 4dr Wagon

Audi A4 in Bulgaria
Jan 2017 - Jan 2019
Apr 2017

204600 mi

$200
Front bearings 
May 2018

217000 mi

$180
Sensor for level of oil 

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2002 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 6-speed shiftable CVT FWD

Audi A4 in Nebraska, United States
- May 2007
May 2007

74000 mi

US $500
Alarm speaker not working. Lights are working. Not Fixed. 
Audi A4 in Michigan, United States
Mar 2010 - May 2017
May 2010

96800 mi

US $440
CEL required a vacuum line replaced. Replaced plastic coolant flange on back of head. Did work myself. Removed windshield wiper linkage - disassemble, clean and lube main posts and housing. It was frozen solid! 
Sep 2010

101000 mi

US $130
Right rear window regulator replaced. 100,000 mile oil change. 
Nov 2011

117000 mi

US $60
slight miss at low revs and low loads only. Thought it was bad fuel, but replaced plugs, air filter, one coil pack, Techron and alcohol to absorb moisture. Went away for a while, now is back when I filled up the tank with Shell Premium 
Jun 2012

122000 mi
Wipers frozen - linkage needed to again be removed and disassembled/lubricated. Mainly the driver side pivot point bushings. 
Dec 2012

129000 mi

US $140
Replaced rear shock absorbers. Changed to winter tires. 
Oct 2013

137000 mi
Wiper linkage corroded - removed linkage transmission and disassemble,lube and re-install. 
Dec 2013

139000 mi
Replace faulty coil pack and spark plugs fouled by the coil pack 
Dec 2014

153000 mi

US $700
Replace leaking radiator. Replace rear water flange on back of head (insurance measure). Replace heater core for lack of heat. Replace Turbo. Noticed oil in intercooler ducting. Also, the waste gate nut was gone, causing low boost with an open waste gate. Replace timing belt service. Water pump as precaution. Replace complete PCV system due to deteriorated hoses 
Jan 2015

US $400
Replace broken fuel pump. 
Jun 2015

160000 mi
Had to disassemble and re-lube a corroded and stuck windshield wiper linkage/transmission assembly. Seems like a yearly maintenance item. 
Sep 2016

167000 mi

US $95
Replace LF wheel bearing. Corroded in place required additional effort. Replace Battery 
Nov 2016

167600 mi

US $7
Replaced LR window regulator plastic part. 
Mar 2017

169000 mi

US $120
Replaced exhaust flex pipe. 
Audi A4 in Florida, United States
Jan 2005 - Mar 2010
May 2005

51000 mi

US $200
horn replaced. 
Sep 2006

58000 mi

US $40
coil pack replaced 
Apr 2007

69000 mi

US $250
both rear passenger window regulators replaced. 
Jun 2007

74250 mi

US $40
coil pack replaced 
Audi A4 in Tennessee, United States
Sep 2006 - Aug 2009
Nov 2006

34000 mi
Faulty front turn signal. 
Feb 2007

41000 mi

US $800
Leaky gasket caused oil to collect around spark plugs and coil packs. Problem with driver's lumbar support caused clicking noises and back panel of seat to pop out at bottom. 
Mar 2007

50000 mi

US $50
Thermostat went bad. 
Oct 2007

55000 mi

US $55
thermostat 
Jan 2008

55000 mi

US $55
Power steering leaking. 

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2002 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 5-speed shiftable automatic AWD

Audi A4 in British Columbia, Canada
Nov 2009 - Sep 2011
Dec 2009

74400 mi

C $130
Coilpack on cylinder #1 failed. Normal driving, engine near idle but starting to accelerate. Engine was warm and operating normally. No warning. CEL flashed fast, vehicle lost a lot of power and started shaking. Towed to dealer, diagnosed, replaced. 
Jun 2010

81220 mi

C $100
Valve cover & Camshaft Adjuster seal leaks. Both seals replaced.  ABS Control Module. Part ordered by warranty was used and ended up being defective. Second part on order. ABS, ESP and Brake lights all flash due to a communication problem with the module. Car still runs fine but it's annoying. Warranty refuses to buy new part. Keeps installing used parts. 3rd used module has been installed but the problem still exists. Faulty module means no ABS or traction control while driving. Problem ongoing for over a month. 
Sep 2010

81840 mi
ABS control module replaced with new oem part. System recoded. 
Sep 2011

89280 mi
Steering rack was patched because it was leaking. Required multiple visits in August and September. 
Audi A4 in New York, United States
- Apr 2007
Apr 2007

50000 mi

US $1000
Leaking gasket seal caused a buring oil smell. Gasket was replaced. 
Audi A4 in Georgia, United States
Apr 2007 - Jun 2011
Sep 2009

78000 mi

US $330
Oxygen sensor failed 
Audi A4 in Wisconsin, United States
Apr 2007 - Mar 2010
Mar 2008

73000 mi

US $50
Leaking valve cover on engine. 
Audi A4 in California, United States
Dec 2006 - Sep 2012
Apr 2007

97000 mi

US $1800
rear left window regulator engine mounts replaced water pump causing coolant leak.. replaced waterpump and re-did timing belt service 
Mar 2008

113000 mi

US $200
Catalytic converter replaced. 
Mar 2011

136000 mi

US $800
Power steering pump replaced. It had been whining a bit and a fluid flush didn't help.  
Feb 2012

145300 mi

US $650
Leak at turbo ac took a while to kick in 
Audi A4 in Illinois, United States
May 2009 - Jan 2011
Mar 2010

87000 mi

US $725
Radiator had pinhole leak Right Rear Brake Light Flushed and bled brake fluid 
Jun 2010

88000 mi
Turn signal bulb. 
Audi A4 in New Jersey, United States
Dec 2006 - Mar 2010
Jun 2007

39000 mi

US $50
brake booster vacuum pump mechanical failure passenger front door electical failure (window,mirror,ilumination,lock not operational) computer replaced 
Audi A4 in Texas, United States
May 2006 - Mar 2010
Jun 2006

56000 mi

US $100
new DV, old one's diaphragm worn out and was losing power. 
Jan 2007

74000 mi

US $1000
new turbo, diy in the front yard, replaced with a k04. 
Audi A4 in Washington, United States
Sep 2008 - Apr 2009
Jul 2008

45500 mi

US $40
Valve cover gasket replacement. Oil leaking from numerous spots due to bad gasket. Part purchased from Audi Dealer. 
Aug 2008

46000 mi

US $350
Had to replace a broken water pump. Changed the timing belt and thermostat while I was in there. Did all work myself and paid ~350 for a kit online. 
Jan 2009

50000 mi
Leaking coolant, tightened coolant bleeder screw. 
Mar 2009

50000 mi

US $50
Coilpack went bad. 
Audi A4 in Virginia, United States
May 2008 - Sep 2016
Jun 2008

65000 mi

US $250
Rack & pinion was binding. Replaced with refurbished unit. Driver side power window relay. 
Feb 2011

92100 mi

US $200
leaking valve cover gasket shorted an ignition coil 
Aug 2011

95000 mi

US $300
Leaking vacuum hoses-repaired hoses 
Oct 2011

98000 mi

US $280
vacuum leak 
Jun 2016

143000 mi

US $80
Check engine light. Code 17544. Vacuum leak - replaced hose. 
Audi A4 in North Carolina, United States
Jul 2009 - Jul 2013
Jul 2011

152000 mi

US $850
2 window regulators 
Jul 2013

163000 mi
Timing belt and head gasket 
Audi A4 in Connecticut, United States
Feb 2013 - Apr 2013
Mar 2013

70000 mi

US $640
Check engine code P1296. Replaced coolant temp sensor near firewall. Thermostat replaced. 
Audi A4 in Georgia, United States
Dec 2014 - May 2017
Jun 2015

72000 mi

US $20
Both high and low tones horns went out 
Jul 2015

73000 mi

US $40
Changed horn, but relay broke 
Sep 2016

78000 mi

US $45
Changed inner CV boots and refill CV grease 
Audi A4 in Louisiana, United States
Oct 2014 - Apr 2016
Oct 2015

126000 mi

US $10
Antenna booster for radio and remote. Used binder clips and ruler to squeeze it back together. Radio works, but remote range is still extremely short. 
Apr 2016

130000 mi
Antenna booster not fixed. 
Audi A4 in Pennsylvania, United States
Nov 2010 - Jun 2018
Jan 2011

121700 mi

US $250
There was a no-start condition which the shop determined was caused by a fuel pump. Pump and filter were replaced.  2nd trip this week. The shop misdiagnosed or missed an additional problem - the crankshaft position sensor. New sensor required. No further problems after this.  
Dec 2011

97000 mi

US $300
Thermostat was stuck open after a coolant flush. Replaced the thermostat 
May 2012

103700 mi

US $5
Headlight electrical connector was broken. I used some electrical tape to secure the connector in place. seems to be working for now.  Wiring for the door harness has severed, losing window and wireless lock capability. Driver's side wiring harness had frayed and was no longer controlling the windows. The part was replaced. Headlight connector was broken and had to be replaced 
Sep 2012

107000 mi

US $10
The coin tray broke and was no longer functioning. replaced with a new one. 
Nov 2012

107900 mi

US $70
Tailshaft seal was leaking - common problem in these cars. Replaced the seal and re-filled the center differential. 
May 2013

110600 mi
Torn CV boot for over a year - required change of axle. 
Oct 2013

113000 mi
CEL illuminated for over 2 months - the MAF sensor requires cleaning. 
Nov 2013

113200 mi

US $20
Window regulator plastic housing had to be replaced 
Dec 2013

113000 mi
Loss of coolant led to low-coolant light warning. Re-filled with 2qts, as the reservoir was empty. Last coolant fill was 2 yrs ago so a slow leak or evaporation 
Jan 2014

113700 mi

US $60
MAF sensor was replaced to potentially fix the CEL. 
Apr 2014

114700 mi

US $210
Exhaust pipe was correded and rusted at the flex pipe causing bad fuel efficiency and a lot of noise. new flex was cut and welded in 
Jul 2014

118200 mi

US $10
replaced a vacuum line and a pcv check-valve valve cover gasket and half-moon seals were replaced. unable to replace half-moon seals and i may have done a crappy job on the VCG Plastic guide for window regulator broke, requiring replacement 
Dec 2014

120000 mi

US $65
Battery was drained so recharged it. it drained again within 3 days. replaced battery under warranty. unsure yet if this fix worked of if there is a parasitic drain somewhere in the system 
May 2015

122000 mi

US $15
Windshield wiper linkage seized and stopped working Driver door has stopped locking with the wireless remote. Can lock manually only. 
Sep 2015

124000 mi

US $45
Windshield washer jets are not working. Door lock on left driver still not working remotely. Door actuator was not the issue. will attempt a replacement of door harness again 
Dec 2015

128000 mi
Right outer CV boot was torn for about 18 months, CV joint was failing. Replaced with re-manufactured axle water getting into the interior from the rear after heavy rains. put some gutter seal into the suspected area, but did not stop the leak. 
Mar 2016

130000 mi
fuel pump and filter have been having issues. no start condition on 3/4/2016. this was preceded by noise coming from the pump. pump is to be replaced Fuel Pump and filter replaced. Fuel pump gasket was ordered but not installed as it was not neccessary Door not locking - wires severed in harness. parts ordered 
May 2016

133000 mi

US $50
finally put in and spliced new wires. the remote lock works now! fuel gasket replaced as fuel was dripping from the tank 
Jun 2016

133000 mi

US $15
Trunk lock actuator failed - needed replacement VCG + Half moon seals were leaking and were replaced... successfully this time! 
Aug 2016

134000 mi

US $50
Attempting to repair motor mounts i introduced a crack into cooling system. still not sure where the leak is coming from. Motor Mount replacements 
Sep 2016

134000 mi

US $50
i believe the crack i heard during the motor mount install was from a PCV system component. replaced the entire set with silicone breather tubes i had purchased previously. replaced the coolant flange, hoses attached and the CTS. however continued leaking. 
Oct 2016

134300 mi

US $50
finally finished previous repairs including the timing belt, water pump Spark Plug replacement in an attempt to address rough idle on startup 
Mar 2017

137500 mi

US $50
Thermostat was leaking around housing. Temperature of car was not reaching optimal quickly enough. Replaced cat with HFC and replaced downpipes + mufflers as they had developed leaks. 
Jun 2017

140000 mi

US $110
Leaking rear struts had turned the car from sporty sedan into bumpy boat. replaced with OE quality replacements Updated parts in the PCV system 
Nov 2017

142500 mi

US $10
Rear Passenger window regulator piece broke (again) - replaced 
Jan 2018

143000 mi

US $80
rear o2 sensor was showing as dead - spliced in a new one. 
Apr 2018

144000 mi

US $30
Dashboard gauge for engine temp does not display correctly - Replaced coolant sensors to see if that was the issue.. did not fix. Likely need to refurb the dash. 
Audi A4 in Rhode Island, United States
Jun 2015 - Mar 2016
Dec 2015

335000 mi

US $150
Coolant flange was leaking. 

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2002 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 5-speed manual FWD

Audi A4 in North Carolina, United States
Oct 2016 - Jun 2017
Jun 2017

259000 mi

US $60
Engine temp gauge indicated running cooler than normal. I ordered the thermostat parts from an online supplier and installed them on a weekend. 
Audi A4 in South Carolina, United States
Nov 2003 - Apr 2016
Apr 2003

19600 mi
All ignition coils. 
Jan 2006

41000 mi
WIndow motor and regulator. 
Feb 2008

53000 mi

US $106
Engine coolant sensor. Engine coolant sensor + Vacuum hose. 
Jun 2009

66000 mi

US $8
Blinker light bulb. 
Feb 2010

72000 mi

US $150
Windshield water pump 
Jun 2010

75000 mi

US $150
Thermostat. 
Jan 2011

81000 mi

US $225
Coolant flange leak. 
Jun 2011

84000 mi

US $220
Valve cover gasket was replaced. 
Jun 2013

101000 mi

US $70
Brake light switch failed. 
Oct 2013

105300 mi

US $290
Headlight switch needed replacing. 
Oct 2014

114300 mi

US $150
Bad wheel bearing. 
Mar 2015

118000 mi

US $130
Window regulator. 
Audi A4 in Massachusetts, United States
May 2017 - Oct 2017
Jun 2017

175000 mi

US $300
Radiator hoses, thermostat, and sensor replaced 
Sep 2017

175500 mi

US $425
Upper control arm , front driver side of vehicle 
Audi A4 in Australian Capital Territory, Australia
Jun 2013 - Jun 2016
Mar 2015

135160 mi
Rocker cover gasket. Cause was difficult to determine, either failure of the gasket or incorrect installation. 
Dec 2015

148800 mi

A $500
replaced front suspension upper control arms 

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2002 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 5-speed manual AWD

Audi A4 in New Jersey, United States
Feb 2007 - Aug 2011
Mar 2007

54000 mi

US $800
Rear Left Axle seal and Rear Diff Yoke Seal. Both were leaking. Remove both and reinstall new seals with fresh diff fluid. 
Mar 2009

60000 mi

US $90
Replace leaky lower coolant hose. 
Audi A4 in Ontario, Canada
May 2009 - Aug 2015
Jun 2009

123380 mi

C $50
Coolant leak on heater hose flange on back of engine block. Replaced plastic flange and o ring. 
Jul 2009

124000 mi

C $800
All front control arms replaced, (uppers very loose) license plate lights and lens replaced due to corrosion 
Sep 2009

127100 mi

C $300
ac compressor failure 
Apr 2010

136400 mi

C $100
one rear coil spring broke, replaced pair with used springs 
Jun 2010

138260 mi

C $50
coolant plug leaking on engine 
Jan 2011

150660 mi
auto leveling headlights error code and drivers door interior light switch 
Mar 2011

153760 mi

C $35
Vacuum hose split. replaced with new hose. 
Aug 2015

163060 mi

C $80
Bad engine crank position sensor 
Audi A4 in Massachusetts, United States
Nov 2009 - Dec 2013
Apr 2009

88000 mi

US $450
all 4 cyl coils replaced 
May 2009

90000 mi

US $400
rear window motor replaced 
Jan 2010

US $200
Oil dip stick/tube broken and replaced. 
Sep 2010

99000 mi

US $1100
Oil pump stopped working, engine was prone to overheat and cause irreparable damage soon. Replaced Oil Pump, oil pressure sender, and the like. Check engine light came on the night before I brought it to the mechanic, left car immediately. 
Feb 2011

102000 mi

US $90
Ignition coil misfire, 3rd coil replacements. Replaced myself in the driveway after ordering newest series of coils. 
Oct 2013

120000 mi

US $1800
radiator 
Audi A4 in Michigan, United States
Nov 2010 - Jun 2018
Jan 2011

192000 mi

US $6000
Emergency hand brake unusable/seized. Would normally stick in winter but became unusable recently. Hand brake cables were replaced during this trip and it works as expected now. Oxygen sensors and breather system replaced. Engine complains of running lean at times but problem is intermittent. Issue would show up when low in gas at higher cruise speeds, then go away after some time. Sheared off a tooth in 1st gear of manual transmission and damaged Syncro. Vehicle was drivable but transmission clicked in 1st gear. Replaced syncro, 1st gear, output shaft to resolve issue. Passenger side engine mount was leaking hydraulic fluid badly. Replaced both left & right engine mounts and also front snub mount. 
Mar 2011

196000 mi
Power Steering started whining when turning at low speeds. Dealer checked power steering fluid level and refilled. PS tank was apparently empty. Instructed to monitor and if noise returns seek repair. 
Jun 2011

197000 mi

US $2500
Car was losing power steering fluid over course of a couple of months. Replaced power-steering rack. MAF Sensor replaced 
Oct 2011

206000 mi

US $3000
Flex Joint damaged and required repair.  Updated rear sway bar and added new bearings for suspension. After-market rear shocks replaced under warranty. 
Jul 2012

213200 mi

US $785
A power-steering line difficult to replace was leaking or allowing air into the system. The system was making the whining noise while turning the wheel and a bubbling/spurting noise behind the steering whee. The line was replaced/fixed. 
Apr 2013

218300 mi

US $1100
A/C would stop blowing cool air after a period of time on high temperature days (90+). A/C was recharged. 
May 2014

233000 mi

US $357
Driver-Rear wheel was leaking brake fluid determined after visual inspection and brake light flashing. Caliper parts were rusted. Replaced caliper and securing bolts. 
Jul 2015

243200 mi

US $890
Power-steering very light at highway speeds. Whining noise with acceleration but not while turning. Intermittent difficult turning at low speeds. Fluid levels ok and no leaks. Determined to be power-steering pump. 
May 2016

247700 mi

US $4300
Engine head gasket and cylinder damage. Vehicle was losing coolant slowly with no visible leaks. Coolant leaking into damaged cylinder. Machine shop repaired damage & additional components replaced as part of repair. 
Dec 2016

253000 mi
Breather hose cracked. 
Audi A4 in Michigan, United States
Apr 2012 - Apr 2013
Apr 2013

172000 mi

US $550
E-brake cable bound, preventing release of brakes 
Audi A4 in California, United States
Nov 2011 - Jul 2015
Jan 2012

135000 mi

US $400
Vacuum hose connections leaky causing failed emissions testing. One hose broken. Replaced all connectors with screw-type. 
Audi A4 in Pennsylvania, United States
Feb 2006 - Jun 2011
Jul 2006

62000 mi

US $50
COIL PACK FAILURE. CAR FLATBEDDED TO DEALER 
Jan 2007

70000 mi

US $50
ANOTHER COIL PACK FAILURE 
Mar 2010

77000 mi

US $2000
car stalled while merging on the highway. would not restart. coasted to shoulder. flatbedded to service. car sold upon completion of repair. Car was fun to drive but not dependable. 
Audi A4 in Michigan, United States
Sep 2012 - Mar 2014
Apr 2012

139000 mi
Replaced the wires leading to the coils. The insulation was cracked and they were shorting out on each other. I bought the car this way. I replaced the plugs and coils, too. Scanned and found an evap code. Not the gas cap, not hurting anything other than maybe the environment...barely so i am leaving it? I bought it this way. 
Nov 2012

143000 mi

US $300
No cruise control. Replaced clutch switch Check engine light on. Code for large leak evap. Replaced purge valve and a hose leading through the firewall. Check engine light on. Code for bad cat. Assumed to be from previous owner driving so long with 2 cylinders misfiring. I bought it misfiring and fixed the wiress leading to coils. Cat is bad but runs fine. Have to live with this code. 
Mar 2013

148000 mi

US $280
Oil leaking onto the exhaust and burning off causing a bad odor. Replaced valve cover gasket and cam chain tensioner seal. 
Nov 2013

150600 mi

US $275
Clunk in RF. They replaced a ball joint...I guess there are a couple on each side, but we just did the bad one because the others were done by the previous owner. Bad vibration at idle and the intake system sounds different. not quite as peppy, I found vacuum leaks and replaced the diverter valve and PCV valve. Better but still vibrates. Shop checked all systems...perhaps the flywheel but not sure 
Dec 2013

152000 mi

US $199
Flex pipe broke off. Had a cheap one welded in 
Mar 2014

152000 mi
Clutch went out (was causing the vibrations previously mentioned). The main bearing in tranny is bad and causing the clutch to bind - would not go into gear while running. Sold the car as a project to an Audi guy. 
Audi A4 in Texas, United States
Feb 2007 - Mar 2018
Sep 2007

114000 mi

US $55
crankshaft position sensor (aka vehicle speed sensor) intermittently not working on cold starts, requiring repeated cranks to start the car 
Apr 2008

120000 mi

US $40
Driver's side front outer CV boot cracked. 
May 2008

121000 mi

US $20
Rear coolant flange leaking, replaced with new flange and O-ring. 
Apr 2009

133000 mi

US $12
cam chain tensioner gasket leaking. gasket was removed and replaced. 
Nov 2009

142000 mi

US $80
inner CV boot ripped, axle replaced replaced driver's front CV axle due to torn boot 
Mar 2010

149000 mi

US $100
Water pump failure - impeller separated from shaft, resulting in lack of coolant circulation 
Apr 2011

168000 mi

US $68
hood release cable had stretched to the point it caused the release handle to break. Hood release cable and handle were both replaced 
Mar 2012

182000 mi

US $350
clutch disc worn, replaced 
Jun 2012

185000 mi

US $50
Cam position sensor started throwing codes occassionally, was replaced. 
Dec 2012

192000 mi

US $250
leak in radiator, replaced; thermostat sticking open, replaced 
Mar 2013

195000 mi
replaced rear differential mount 
May 2013

197000 mi

US $500
head gasket leaking. Valve job done on head (seals replaced, etc), all gaskets etc replaced 
Aug 2013

201900 mi

US $250
replaced all rear suspension bushings 
Dec 2013

209000 mi
thermostat sticking open 
Jun 2014

215000 mi

US $75
Oil level sensor began intermittently incorrectly reporting low oil level. Sensor was replaced. 
Aug 2014

215000 mi
left axle seal on rear differential was leaking, replaced 
Sep 2014

216000 mi

US $45
low pressure AC line between condenser and dryer was leaking. Line was repaired with new rubber/crimps 
Oct 2015

223200 mi

US $1500
FOD (foreign object debris) ingested into engine, damaging head and piston #1. Possibly some slag broke off a weld inside the intercooler? 
Mar 2017

235000 mi

US $100
control arm ball joint was worn, replaced 
Audi A4 in Massachusetts, United States
Mar 2003 - Mar 2010
Nov 2003

25000 mi
Replace defective Radio/CD changer (warranty) 
Mar 2004

31000 mi
Replace Headight Washer Pumps (warranty) 
Apr 2004

32000 mi
Replace Windshield Wiper Motor (warranty) 
Jun 2005

60000 mi

US $385
Replace defective A/C Condenser (50% warranty) 
Jun 2006

80000 mi

US $152
Replace Broken Vacuum Line 
Nov 2006

90000 mi

US $300
Replace Coolant Temp Sensor, Replace Driver Side Wiper Arm 
Jan 2007

93000 mi

US $1890
Replace Power Steering Rack 
Audi A4 in Massachusetts, United States
Sep 2011 - Jan 2013
Oct 2011

91755 mi

US $90
Coil pack D failed causing misfire. Replaced Coil pack. Replaced one front headlight and both front blinkers. Blinkers failed due to burnt connections, fixed with an electrical sealant to keep out moisture. Replaced Hood Lift support. The old one was not holding the hood up. Replaced Hood Lift support. The old one was not holding the hood up. Replaced missing front lower valence/spoiler 
Apr 2012

98700 mi

US $30
engine speed sensor /engine crank position sensor failed, and was replaced 
Jan 2013

110000 mi

US $500
Car began blowing a lot of white smoke out of exhaust. Problem was either Head gasket or Oil Cooler. Both were replaced. 
Audi A4 in Ontario, Canada
May 2014 - May 2014
May 2014

77500 mi

C $200
Misfire when cold, replaced MAF, coolant temperature sensor on recommendation from my mechanic 
Audi A4 in Connecticut, United States
Jun 2002 - Jul 2010
May 2002

4300 mi
Ignition coil failed, car in the shop for 2 weeks due to out of stock on ignition coiils. 
Mar 2008

125000 mi

US $325
Ignition coil failed. New set needed. 
Jul 2009

135000 mi

US $7200
Intake valve head broke. Damaged cylinder 1,2 and 4 beyond repair. New block and head needed. Replaced clutch during vist since engine was being replaced and access was easy. 
Jul 2010

125000 mi

US $8500
Intake valve head broke and debris damaged cylinders 1,2 and 3 beyond repair due to migration through the intake manifold since the head on the valve was broken and open during power stroke. Estimated $8500 to repair, so junked. 
Audi A4 in Minnesota, United States
May 2010 - Sep 2010
Jul 2010

93000 mi

US $132
Worn rear passenger strut mount causing rattling. Replaced rear strut mounts and fixed problem. 
Sep 2010

93000 mi

US $200
Bad combi-valve throwing a check engine light. Replaced valve and fixed problem. 
Audi A4 in North Carolina, United States
Mar 2007 - Jun 2018
Jun 2007

85000 mi

US $6000
Engine sludge caused lack of oil pressure which then caused a spun rod bearing which destroyed the internal engine parts. 
Jan 2009

101000 mi

US $100
The plastic piece holding the window to the window regulator broke, so the window would no longer go/stay in the up position. It did stay in place with duct tape on the outside in order to get the car home.  
Oct 2009

107000 mi

US $40
Failed ignition coil. AAA paid for the tow home (wasn't sure how to factor in that potential cost). 
Jul 2010

120000 mi

US $110
MAF sensor failed, bought new one and replaced myself 
Aug 2010

120700 mi

US $8
Found a couple of vacuum leaks in the turbo system. 
Jun 2011

126000 mi

US $300
Sensor in the system replaced, but problem is not fixed yet. Will return to shop in the near future. 
Nov 2011

131000 mi

US $40
A suction pump (vacuum switch) in the PCV system failed and required replacement. 
Mar 2012

135000 mi

US $2000
Power steering rack failed while driving. Had to be towed to the shop. 
Aug 2012

145300 mi

US $200
3rd recharge in 3 years. No leaks found this time around. 
Jun 2013

150000 mi

US $100
The coolant return fitting out of the turbo failed. Quick easy fix. Oil supply line to the turbo was leaking. In retrospect this might have just been a loose fitting, but I replaced the fitting and the line to be safe and avoid fixing something twice. 
Dec 2013

156000 mi

US $100
a mysterious coolant leak that was not able to be replicated. Maybe extreme cold weather related? Problem has not returned since. 
Mar 2014

157000 mi

US $500
Water pump leaking, probably the o-ring, replaced entire assembly and timing belt. Then 2 weeks later my thermostat housing exploded. 
May 2014

160100 mi

US $20
The car would intermittently not shift into gears for a few days. Bleed the slave and clutch which didn't appear to help, though the problem has not returned. 
Sep 2014

168000 mi

US $50
Failed coilpack. Diagnosed with personal pc and had a spare coil in my trunk. 
Dec 2014

170000 mi

US $200
another failed coilpack, so I just replaced all 4 
Mar 2015

172000 mi
hood pull latch broke - just the lever, not the actual cable 
Aug 2016

177000 mi
Had a slow AC leak for a few years, able to get by with recharges. Leak became faster and was found to be a defective AC compressor. Cost $1500 Crankshaft position sensor failed, but intermittently so the car was still driveable at low throttle. Replaced on my own. 
Audi A4 in Pennsylvania, United States
Dec 2006 - Mar 2010
May 2007

69000 mi

US $50
rough idle due to the front O2 sensor. 
Jun 2007

69000 mi

US $367
intermitant rough idle. dealer replaced the MAF under warantee but the problem still exist. they cleaned the throttle at cost to me. replaced the skeleton for the lumbar in the driver's seat. 
Aug 2007

73000 mi

US $260
-O2 sensor once again. -spark plugs for some strange reason were red at the tips. -rough idle 
Audi A4 in Colorado, United States
Oct 2009 - Jun 2012
Jan 2009

85000 mi

US $1200
Leak in power steering. EStimate is about $1200 to replace rack. So far, I have just topped off the fluid. Haven't had to add more in about 6 months. 
Nov 2009

93000 mi

US $400
Driver window mechanism broken. Had to be replaced. Driver window mechanism repair 
Dec 2009

95000 mi
Check engine light code indicated a problem with the thermostat or sending unit. Code reset and will see if problem re-occurs. 
Feb 2010

96000 mi
Check engine comes on. Code indicates a problem with either the thermostat or sending unit. Light goes off on its own after a week or so. Shop couldn't pin down exact cause. Headlight bulb replaced. windshield washer fluid leak near front of car. Shop couldn't pinpoint location. Tubes looked good. Could be headlight washer pumps which are too expensive to repair. 
Aug 2010

105300 mi
Sunroof opens fine, but sometimes stops on closing. I have to open all the way and re-close. Shop thinks problem is in the switch, a $330 part. 
Oct 2010

106000 mi

US $210
Engine temp sensor failed. Car difficult to start when engine was cold because sensor was telling computer that the engine was at 80 degress instead of 40 or so. 
Sep 2011

111000 mi

US $850
Car would lose power. Could only go about 15 MPH. I replaced the throttle body. The problem took a couple days to diagnoise. 
Jun 2012

115000 mi
Never replaced faulty sunroof switch. 
Audi A4 in Georgia, United States
May 2007 - Jun 2018
Jul 2008

101000 mi

US $150
Coil pack failure on cylinder #1. Replaced all 4 coil packs due to the large difference in the revision of the part. Had version L replaced with version R 
Dec 2008

106000 mi

US $100
Small leak in Evap system. The gas tank has a crack or defect on the top of the tank. Purchased a used tank. Awaiting time to install. 
Oct 2009

121000 mi

US $900
Gas tank had a failure point. causing evap system error. New tank corrected problem. 
Feb 2010

125000 mi
P0420 catalytic efficiency. Purchased new front O2n sensor. Awaiting install. 
Apr 2010

127000 mi

US $88
Replaced front O2 sensor 
Jun 2013

130000 mi

US $430
Replaced the engine speed sensor.....after 3 years it was hard to start the car without it :) 
Aug 2013

131200 mi

US $130
2 coil packs failed. Replaced all 4 due to new revision of part. 
Dec 2013

137000 mi

US $400
Motor mount failed. Liquid inside mount oozed out. Both motor mounts replaced with solid rubber design. 
Mar 2014

141000 mi

US $20
Cat inefficient error - clogged Cat. Replaced cat. Dipstick funnel failed. 
May 2014

143000 mi

US $100
Replacement of suction pump, bleeder valve and pressure control valve. 
Aug 2014

144000 mi

US $100
Rear O2 sensor replaced. Code for faulty heating element 
Feb 2015

150000 mi

US $800
Oil pan seal was leaking Rear differential axle seal 
Sep 2015

155000 mi

US $145
Car would randomly not start after leaving parked in the garage overnight. Aftermarket battery was not the correct battery for the car. 
May 2017

157000 mi

US $2000
Original clutch shattered. With 156k miles on it, it was on borrowed time. Replaced with aftermarket clutch. 
Oct 2017

157200 mi

US $2200
Syncro failed for 4th gear. Could not shift normally into 4th gear. 
Audi A4 in Connecticut, United States
Sep 2006 - Feb 2012
Apr 2007

74000 mi

US $78
Windshield washer pump motor siezed. Blew associated fuse. I bought new washer pump, installed myself. Headlight bulb, changed myself. Took one hour, shop could probably do it in 30 minutes. 
Jul 2007

77000 mi

US $2
Check engine light came on. I pulled the code, running lean, cylinder bank 1. Found vacuum hose broken causing leak. Replaced vacuum hose. Cleared code. 
Oct 2008

89000 mi

US $50
Speedometer stopped working. Check engine light came on. Replaced vehicle speed sensor. 
Nov 2008

89000 mi

US $1700
Steering was vague, car wandered, especially over bumps. Replaces all front control arms, tie rod ends, front struts and rear shocks. 
Dec 2008

90000 mi

US $1100
Exhaust pipe cracked between resonator and muffler. Pipe needed to be replaced, as the area of crack was too thin to weld. Replaced entire exhaust system instead. 
Jan 2009

91000 mi

US $100
Engine misfiring. One coil pack died. Elected to replace all 4, as the coil packs are a known issue, and they were only $25 each. 
Jul 2009

94000 mi

US $45
Check engine light came on, pulled code, consulted manual and replaced Engine Coolant Temperature Sensor. 
Mar 2010

99000 mi

US $400
Parking brake cable seized. Replaced both cables. Rear brake pads and rotors replaced from dragging brakes. Replaces front brake rotors and pads due to rust on defective aftermarket rotor. 
Jul 2010

102000 mi
Car started misfiring. Intermittant issue over about 100 miles. Finally the coil pack died and set a code. I replaced 3 coil packs with OEM replacements. Had to order the 4th. Aftermarket coil pack lasted 12,000 miles, so I will replace all A/C blew cold at idle, but not at highway speed. Found vacuum leak, large 3 way hose split. Will replace next time I am near dealer, but fixed for now with duct tape. 
Jun 2011

112000 mi

US $1
Vacuum leak found, fixed with tape but need to replace more rubber hoses. Vacuum leak causes A/C to work poorly, fools computer to think engine is under hard load. 
Audi A4 in New Mexico, United States
Sep 2006 - Mar 2010
Feb 2009

58000 mi

US $90
Noticed noise in transmission. Owner's manual no help, ordered repair manual from online vendor. Transmission fluid was low. Got fluid from online dealer. Filled fluid reservoir, noise disappeared. Drove awaiting manual arrival, then not til fluid came. 

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2002 Audi A4 4dr Sedan

220-horsepower 3.0L V6 6-speed shiftable CVT FWD

Audi A4 in California, United States
Sep 2008 - Jul 2012
Jul 2012

137000 mi
internal coolant leak diagnosis in March, sold in July 
Audi A4 in Florida, United States
Jul 2010 - Feb 2016
Sep 2010

104000 mi

US $300
Front Driver Axle cracked at joint. Grease spilled out of joint. Car vibrated while accelerating and made occasional squeaks at point of damage. Front axle was replaced and problem solved. 
Feb 2011

105000 mi

US $550
Overhead gasket seal was old and leaking. Caused engine to misfire. 
Oct 2011

114000 mi

US $450
Car running rough fan running a lot. Drove it with check engine light (CEL) for a month~ code was for a temp sensor. Next, car vibrated and CEL began to flash. towed to shop. replaced temp sensor, hoses, and one coil pack. Fixed 
Feb 2016

164000 mi
Valve cover gaskets leaking. Second time. They were replaced in 2010. 
Audi A4 in California, United States
Nov 2008 - Feb 2009
Jan 2009

US $503
Power steering pump. Driver's door controls inoperable. Power windows inoperable in entire vehicle. Driver's door controls inoperable. Power windows inoperable in entire vehicle. 
Audi A4 in Florida, United States
Oct 2003 - Feb 2011
Oct 2003

20500 mi
coolant leak. Replaced valve 
Dec 2004

40500 mi
replaced radio 
Apr 2005

46631 mi
replaced catalytic converter 
Jul 2005

49582 mi
speakers go in and out in volume. Installed felt strips in all 4 doors. 
May 2007

78500 mi

US $1050
Replaced faulty Combu Valve 
Jun 2007

79000 mi
Replaced catalytic converter 
Nov 2007

86500 mi

US $50
Sunroof would randomly tilt open and close during driving. Dealership replaced a switch. Replaced sun roof switch 
Dec 2007

88000 mi
Snub motor mount was bent and replaced during scheduled timing belt change at roughly 87500 miles. 
Audi A4 in California, United States
Nov 2009 - Dec 2013
Jul 2013

89500 mi

US $4000
variable transmission was jerky at low speed and something slided out of gear altogether. 
Dec 2013

92000 mi
Transmission never fixed. 
Audi A4 in North Carolina, United States
Jun 2007 - Oct 2013
Sep 2007

67000 mi

US $230
Water pump failed. Engine ran hot and was shut off before permanent damage could occur. Car was towed to a local shop, but they were not equipped for the repair. They towed the car to the Dealership. Dealership replaced the water pump and timing belt. Check engine light was on for two weeks. Local auto parts store reset the light, it came back on after 3 days. While in the shop for problem 1, shop said they think problem 1 caused problem 2. They reset light but repaired nothing. Had to take car bac Check engine light on (as mentioned in problem 2 of trip 1). Light reset during trip 1. Light came on 3 days later. Went back, sensors bad, replaced sensors, problem solved. 2 weeks later light has not come back on. After getting car back from trip 1, washer fluid light came on. I refilled with 1 gal of fluid. Took back for trip 2, got it back, fluid low again. Shop says they filled it both times. Looked at it on 3rd trip, pump leaking, replaced, problem solved. 
Nov 2009

106600 mi
Coil failed, car was undriveable. Towed to dealer, they notified me that a recall had just gone out on the coil and replaced it for free. Happy me :) 
Jan 2011

112500 mi

US $80
Thermostat completely failed in the open position. Car drove fine but would take 20+ minutes to warm up. Did not notice the problem until the weather got ready cold. 
Nov 2011

142000 mi

US $300
Engine stalled, would not maintain idle without foot on throttle. Multiple codes, 2 O2 sensors intermittently giving trouble for years could be causing them. 3 sensors replaced at my request (due to reduced labor cost of the 3rd sensor). Same problem a week later, engine stall. Shop said ETC sensor giving readings that "didn't make sense" and suggested it be replaced. I requested shop replace the ETC sensor and fuel filter (it was overdue anyway). 
Dec 2011

143000 mi

US $180
Same prob another week later, engine stall. Shop gave an OBDII recorder to get more info. MAF sensor throwing bad data, shop advised replace sensor and wiring. Engine ran smoother when it was disconnected. Sensor and wiring replaced. Same problem as before. Advised shop that no routine maintenance had been performed since about 80k miles, other than oil and tires. Shop checked regular maintenance items, found two bad spark plugs and 4 poor plugs. Replaced plugs. 
Feb 2012

146400 mi
Stalling again, but this time could find nothing wrong and problem is gone again. 
Oct 2012

158800 mi

US $265
Power to trunk lid failed, lights and latch not working. Replaced latch switch and lights came on, but latch still not working. 6 days of diagnostics could not identify problem. Audi dealer refused to provide wiring diagram for trunk lid. 
Oct 2013

179000 mi
MIL thrown for both cat banks. Did a $150 fuel system service and cleared codes. Ran fine for a few weeks, then codes came back. Power to trunk lid never entirely fixed. 

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2002 Audi A4 4dr Sedan

220-horsepower 3.0L V6 6-speed manual AWD

Audi A4 in Iowa, United States
Jan 2015 - Nov 2015
Nov 2015

187000 mi
Engine light on for catalytic converter. Ran fine, though. 
Audi A4 in Wisconsin, United States
Sep 2007 - Sep 2009
Aug 2008

63000 mi

US $200
Both horns needed to be replaced. 
Dec 2008

65000 mi

US $200
Engine water temp sensor was replaced. Windshield wiper are assemblies both broke (at separate times) and were completely replaced 
Apr 2009

68000 mi

US $300
2 of 6 ignition coils bad. Shop recommended replacing all 6, which was done. 2nd time since car was new that this had to be done. Hose came off of emission control fan, causing high pitched turbo-like whine for up to 30 seconds, intermittently and mostly on engine cold start. Mechanic discovered and reattached hose at no charge while diagnosing problem #1 
Audi A4 in Connecticut, United States
Feb 2008 - Mar 2015
Apr 2009

118000 mi

US $700
EPC and traction control light came on randomly causing intermittent loss of power, and hesitation. 
Aug 2009

121000 mi

US $974
throttle body sensor replaced Also had routine 120k svc 
Dec 2010

141000 mi

US $230
clutch position switch 
Mar 2011

145000 mi

US $2000
balance fly-wheel broken and shifter-linkage along with clutch 
Apr 2011

146000 mi

US $450
windshield wiper control unit failed 
Aug 2012

158100 mi

US $200
all windows did not go down; wiring harness to drivers door replaced 
Nov 2014

183000 mi

US $400
coil pack replacement - one bad but all 6 replaced 
Feb 2015

188000 mi

US $1500
Needed replacement of entire steering rack 
Audi A4 in British Columbia, Canada
Apr 2009 - Jun 2018
May 2009

70680 mi

C $409
Slightly leaking seal at rear drive shaft of transmission. Transmission oil replaced & seal conditioning additive added after shop felt that the seal replacement might cause additional problems. I have not yet been able to check if the seepage has stopped 
Jun 2009

73160 mi

C $600
Rear Transmission seal still leaking after May's repair by other shop. In shop for 2 days because all parts to repair not ordered. 
Jul 2009

75640 mi
Returned from vacation to find that seal still leaking, but all required parts were not in stock. Will have to return to repair again. 
Aug 2009

77500 mi
Dealer replaced seal again, under repair warranty. So far, so good. 
Dec 2009

82460 mi
Engine started missing badly, then Check engine light started flashing. Diagnosed as failed ignition coil. Dealer replaced all 6 ignition coils per Audi Canada Voluntary Emissions Service Action 28F2/J1 Ignition Coil Inspection/Replacement. 
Feb 2010

84180 mi
While the car was in to have the ignition coils replaced in Dec., the mechanic at the Dealership performed an overall inspection & discovered that the rear transmission seal was leaking, yet again. Repaired at no cost due to failure of prev. repair. 
Audi A4 in New Jersey, United States
Oct 2009 - Apr 2012
Mar 2010

195000 mi

US $600
Emergency Brake cable repaired 
Mar 2011

225000 mi

US $550
Front driver side Ball bearing replaced. 
Apr 2011

230000 mi

US $550
Other front Ball Joint went 
Audi A4 in California, United States
Dec 2011 - Sep 2020
Jan 2012

US $500
replace control arms (all front) 
Dec 2013

153000 mi

US $1000
Water pump, timing belt, pulleys, tensioners, oil seals on pas. side cam adjuster, coolant O ring on temp sender, oil, oil filter, air filter, spark plugs, drive side motor mount (all replaced this year). 
Aug 2014

162000 mi

US $500
replaced shocks 
Nov 2014

165000 mi

US $70
coolant leak from connection between flange and hose going to heater core. 
Dec 2015

180000 mi

US $200
replace leaking vacuum hoses, PCV valve and fuel pressure regulator. 
May 2017

195000 mi

US $200
Replace radiator, oil change, replace snub mount. Replaced rear rotors and pads. Flushed brake fluid. 
Jun 2017

196000 mi

US $200
Replaced headliner 
Audi A4 in New Jersey, United States
May 2014 - Aug 2015
Jun 2015

135000 mi

US $150
Oil pressure light would come on intermittently. Replaced the sending unit and oil filter. 
Aug 2015

135000 mi
Leaking PS fluid 
Audi A4 in Utah, United States
Sep 2010 - Aug 2011
Nov 2010

75000 mi

US $627
CEL was constantly illuminated but the drivability of the car was normal. Repair was done by mechanic free of charge due to previous error during a pre-purchase inspection. Cost of parts/labor was $1000+. Cause: secondary air injector. Passenger HID bulb was discolored which indicates approaching failure. Shop replaced it with a new bulb and raised the default setting for the auto-leveling bulb system for increased visibility. 
Jul 2011

86000 mi

US $220
I had a faulty oil level/temp sensor replaced. 
Audi A4 in Latvia
Sep 2014 - Sep 2014
Sep 2014

164300 mi

€50
Fuel nozzle rubbers was replaced. 
Audi A4 in California, United States
Sep 2007 - Sep 2012
Mar 2007

95000 mi

US $1800
Replace timing belt Repair broken glove box 
Sep 2009

123000 mi

US $400
Replace rear shocks and shock mounts 
Nov 2009

131000 mi

US $580
Replace right front axle Replace rear brakes 
Audi A4 in Virginia, United States
Feb 2009 - Sep 2013
Mar 2009

75000 mi
Catalytic Converter replaced under emissions warranty. 
Dec 2009

87000 mi

US $550
Oil Leak from Right Valve Head Cover; replaced L&R Valve Head Covers. Replaced serpentine belt & tensioner. 
Apr 2010

90000 mi

US $175
Car would crank at start but not fully turnover; mechanic unable to Dx problem; however, works fine now. 
Jun 2010

91000 mi
Replacement of coolant sensor; caused CEL and engine fan to power on during cold starts; also responsible for controlling fuel mixture entering the cylinders. 
Mar 2013

128000 mi

US $800
Replaced all 4 oxygen sensor; sensors had been running sub-standard performance for > 1 year. Replaced OEM sensors x 4 with after-market sensors. Issue diagnosed via owner's VAG-COM. Alternator failure. Replaced OEM alternator with after-market. 
Audi A4 in Virginia, United States
Sep 2006 - Jun 2011
Dec 2008

69000 mi

US $800
The A4's ignition coils crapped out AGAIN plus spark plugs, vacuum lines, throttle plate cleaning and lots of other labor charges to replace coils & plugs. 
Dec 2009

74000 mi

US $2000
New front control arms installed - had failed after 7+ years driving on city roads. 
Aug 2010

79000 mi

US $1400
Brakes, ignition coils (again), minor bodywork 
Sep 2010

90000 mi
ignition coils went again within 1 month of new ones installed; I sold the car the day I picked it up from the shop 

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2002 Audi A4 4dr Sedan

220-horsepower 3.0L V6 5-speed shiftable automatic AWD

Audi A4 in California, United States
Jan 2007 - Mar 2016
Dec 2010

130000 mi

US $162
Temperature sensor failure caused fan to run at high speed at cold start. Part was replaced. Hood failed to remain open. Replaced Hood Strut 
Jan 2011

130000 mi

US $464
Drive belt tensioner failed. Belt tensioner, multi rib belt and expansion tank cap replaced. Alarm horn has failed. Fault for this alarm horn also registered in the computer. Replacement cost estimate was ~$500. Not repaired due to high cost/low usage. 
Mar 2011

134000 mi

US $1157
Water pump bearing starting to fail. Water pump and timing belt replaced. 
Feb 2012

148000 mi

US $1800
Catalytic converter fault Torque converter fault. slippage faulty brake light switch 
Apr 2012

151000 mi

US $4200
Catalytic converter Bank 1 (Feb was bank 2) Torque converter slippage. seal failure 
Feb 2013

164000 mi
fuel pump failure one fuel cell failure. Chargable only to ~10.5V 
Sep 2013

174000 mi
Malfunction Indicator Light was intermittently flashing near 170000 miles. Usually occurred when coasting on flat or downhill at highway speeds. Issue disappeared before mechanic could check. 
Jun 2014

185000 mi

US $2600
intake manifold gasket and associated tubing replaced. (engine did not turn) rnwater temp sender and o-ring and spark plugs 
Sep 2014

190000 mi

US $200
Left headlight blown. Right headlight heavy flickering. Both headlight bulbs replaced. 
Dec 2014

195000 mi

US $600
Sheared Driver CV Boot. Motor Mount (Front/Snub) crack. 
Audi A4 in Montana, United States
Dec 2007 - Jan 2009
Jan 2008

59000 mi

US $1635
Software update: $135 Long overdue, apparently misfires were occurring that caused supplemental check engine codes along with the cat replacement.  Intake manifold: $1500. Repairs done due to a plastic rattle sound from intake manifold changeover mechanism that rattled in its seat during med-hard acceleration until intake changeover at 4200rpms. Cat replacement: covered under extended emissions warranty 8yr/80K but costs was quoted at about $1200 Caused by intermittent check engine light for a bank 2 O2 sensor code . 
Audi A4 in Tennessee, United States
Nov 2008 - Nov 2013
Dec 2008

44000 mi

US $150
Coil pack on one cylinder. Will probably replace the rest myself as they are a problem for many Audi 3.0 owners. 
Mar 2010

50000 mi

US $2000
Trans computer replaced along with tiptronic switch circuit board 
May 2010

50900 mi

US $2000
Tiptronic switch and circuit board replaced. Trans would not shift from park to any other gear without starting the car in Neutral and forcing it to shift. 
Feb 2012

58000 mi

US $575
Replaced left rear caliper which was leaking. Also did rear pads at that time. 
Sep 2012

59000 mi

US $50
Coolant temp sensor 
Nov 2013

64000 mi
leaking cam seals, collapsed valve tappet 
Audi A4 in Rhode Island, United States
Feb 2010 - Jun 2011
Apr 2010

130000 mi

US $250
The wheel bearing was off and needed to be fixed 
Audi A4 in Pennsylvania, United States
Nov 2011 - Aug 2020
Jul 2012

110700 mi

US $25
whenever driving above 65MPH with slight uphill, i feel a little kick. went to dealer and got a code for torque converter (P0741) which needs to be replaced. 
Feb 2013

119700 mi

US $100
the windshield fluid wasn't coming out but the wipers were working fine. I took it to the dealer and they found that a fuse need to be replaced. also told me that if this happens again, the pump and the protective cover will need to change. 
May 2013

125100 mi

US $275
the front right window regulator had to be replaced as the regulator cable wear out. 
Jan 2014

121800 mi

US $557
the Drive shaft need to be replaced after noticing knocking sound while driving and also the car vibrate at low and high speeds. I got a used one for $250 instead of paying $1600 for the new one. 
Apr 2014

146000 mi

US $295
The turning signal switch got replaced. 
Aug 2014

150400 mi

US $250
the front right wheel hub was giving loud noise and in need to be replaced. 
Oct 2014

153200 mi

US $109
the cupholder did broke and was replaces by a genuine one from online seller ( $84.00). 
Apr 2015

163000 mi

US $910
the front left wheel bearing needed to be replaced. Also, discovered that the front upper front and front upper rear control arms needed to be replaced. the left rear window regulator needed to be replaced. 
Mar 2016

186000 mi

US $160
Oxygen sensor bank 1 has to be replaced. 
Apr 2016

187000 mi

US $40
coolant sensor had to be replaced. 
Dec 2016

210000 mi

US $738
replaced driver's side wheel bearing due to noise. serpentine belt tensioner and serpentine belt was replaced. front left inner CV boot was replaced. 
Feb 2017

214000 mi

US $522
There was a humming sound when making turns. It was thought to be the steering rack but turned to be the power steering pump. The rear differential seal was seeping and had to be replaced. 
Mar 2017

216000 mi

US $100
The parking brake seemed to get stuck couple of times. One of the (may be called hoops) was frozen. Got some WD-40 and all is back to normal. The passenger's side headlight washer jet in the front bumper was loose where its screws seemed missing and had to be fixed back in place. 
May 2017

218000 mi

US $263
After having the CEL on for many years, crankcase vent valve got replaced. The CEL went off for a day then came back on again. When scanned, it showed code P0441 (evaporative emission system/ incorrect purge flow). 
Nov 2017

238000 mi

US $720
the water pump did fail ,though was replaced back in February, and had to be replaced. Also, after getting the anti-freeze fluid every where the power steering pump did fail also and was replaced. 
Feb 2018

244000 mi

US $40
the brakes [brake lights] used to stay on. Brake switch got replaced from an old beetle. 
Mar 2018

245000 mi

US $70
rear brake rotors and pads replaced. License plate light wasn't working due to broken wires. Wires replaced and a new bulb was put on. Passed inspection. 
Apr 2018

246000 mi

US $50
Front rotors replaced. 
Jun 2018

250000 mi

US $614
the dual radiator fans were making loud noise and had to be replaced. Got used ones for $120. Leaking valve cover gaskets had to be replaced. misfire in cylinder 6. a coilpack had to be replaced. 
Oct 2018

256000 mi

US $330
the right parking brake cable did seize many times so I had it, with the left side, replaced. 
Dec 2018

262 mi

US $152
misfire in cylinder 1, Delphi coil replaced by old Audi one. Also, discovered the valve cover gaskets were leaking. 
Jan 2019

263998 mi

US $140
Valve cover gasket at the passenger's side was replaced ($ 50 for the part). 
Feb 2019

265571 mi
Front brakes were replaced. 
Apr 2019

270990 mi

US $460
Inner driver's side CV boot was leaking. Got a new one from FCP. Box flex pipes were replaced. 
Jan 2020

287899 mi
Fuel pump replaced. 
Audi A4 in North Carolina, United States
Sep 2006 - Nov 2010
Dec 2006

43000 mi
rear brake light was off, shop replaced at no cost 
Mar 2009

65000 mi
Gearshift inoperative. 
Audi A4 in Ohio, United States
Oct 2013 - Jul 2014
Jul 2014

202000 mi

US $76
Fuel pump failed and was replaced 
Audi A4 in Massachusetts, United States
Apr 2008 - Mar 2010
Mar 2008

75000 mi

US $2800
Had to replace one of the overhead cams which the dealer said was a common repair for this car 
Audi A4 in Massachusetts, United States
Sep 2008 - Oct 2011
Apr 2008

59000 mi

US $1000
timing belt. Belt had to be replaced because it was giving us trouble, this was unusual according to the dealer...belt looked to have been run very hot for extended periods of time, possibly an LA car or other metro location? 
Jan 2010

76000 mi

US $22
OEM ignition coilpack failed on cylinder #4. Drove to dealer adn all 6 were replaced under pending recall. 
Oct 2010

83000 mi

US $50
Changed out oil level sensor to alleviate "Bad Oil Level Sensor" message on car's diagnostic display. 
Mar 2011

85000 mi

US $150
Left rear caliper locked shut and needed to be replaced. 
Audi A4 in Ohio, United States
Aug 2008 - Dec 2015
Feb 2015

136900 mi

US $600
Replaced all engine mounts. 
Audi A4 in Florida, United States
Mar 2014 - Apr 2014
Apr 2014

110000 mi

US $20
replaced ignition coil 
Audi A4 in Virginia, United States
Apr 2008 - Jun 2014
Nov 2008

86000 mi

US $80
Left Inner CV Boot torn. Replaced Inner and outer CV boots.  
Jun 2009

94000 mi

US $5500
Catalytic Converters (L & R) Torque Converter replaced 
Aug 2010

104200 mi

US $608
Noticed vibration in Front end 25MPH on up. Vibration feels like wheel out of balance. 
Apr 2012

117300 mi

US $1000
Replaced RF CV boots (Inner and Outer). Replaced RF upper links bushings, and replaced LF tie-rods (Inner and Outer). Four wheel alignment, wheel balance & rotation done. 

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2002 Audi A4 / S4

turbocharged 4-cylinder manual AWD

Audi A4 in Finland
Apr 2009 - Dec 2010
Jun 2009

105400 mi

€580
Water pump failure. These are made of plastic that is not bound to last. A very common problem with this engine. 
Dec 2009

108500 mi

€400
Passenger side front bearing started to make noises. Dealership's forensic report confirmed that it was worn out. A new one was installed, problem solved. 
Jul 2010

110980 mi

€500
Wheel bearings started to make some noise. Replaced it to avoid further problems and to get rid of the noise. Also some routine maintenance. 
Dec 2010

111600 mi

€900
Power steering fluid leak through the conrod sealing 

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2002 Audi A4 / S4

Engine not specified

Audi A4 in California, United States
Oct 2009 - Sep 2013
Nov 2009

70000 mi

US $150
Oil leaking from engine found by the technician. Gasket replaced. 
Dec 2009

70000 mi

US $1600
oil leak from camshaft seal 
Sep 2010

79000 mi

US $1500
left and right Engine mount support leaks/replaced left and right inner CV boots broken, replaced both left/frong and right/frong axle assembly. 
Oct 2012

96500 mi

US $200
Vibration on the driver side axle, replaced axle. 
Sep 2013

105000 mi

US $900
Water Pump leak, replaced water pump leak. 
Audi A4 in Massachusetts, United States
Dec 2010 - Jan 2011
Jan 2011

107000 mi

US $694
Many electrical functions were either not working, or operating erratically (alarm / interior lights / trunck lid / door locks, etc.) Mechanic replaced the "convenience module" on floor, which had failed (NOT due to exposure to water). 

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2002 Audi A4 / S4 4-door

turbocharged 6-cylinder automatic AWD

Audi A4 in Virginia, United States
Feb 2007 - Mar 2010
Mar 2007

41000 mi

US $50
It took 3 trips to accurately diagnose the problem as a pinhole in the cylinder head. The repair was JB Weld and is currently holding although I don't feel that it was appropriate. I think the head should have been replaced. 

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2002 Audi A4 / S4 4-door

turbocharged 4-cylinder diesel manual 2WD

Audi A4 in South Africa
May 2010 - Jun 2012
Aug 2010

116560 mi

R 2600
water temp sensor faulty upper C links on steering replaced  
Jan 2011

119660 mi

R 350
driver door wiring connector. wires cracked from door opening and closing, causing window to stop working. no error lights 
Dec 2011

126480 mi

R 12000
Tandem pump leaking, also replaced front disks and pads, timing belt and water pump 

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2002 Audi A4 / S4 4-door

turbocharged 4-cylinder manual AWD

Audi A4 in Missouri, United States
Jul 2007 - Sep 2008
Sep 2007

US $86
Replaced valve cover gasket due to oil found on ignition coil and spark plug in cylinder #2. Three of four ignition coils needed to be replaced. Sold car. 
Audi A4 in Oregon, United States
Jun 2007 - Jan 2008
Aug 2007

53000 mi

US $600
breather hose from the intake manifold to suction pump/breather valve cracked 

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2002 Audi A4 / S4 4-door

turbocharged 4-cylinder manual 2WD

Audi A4 in Nevada, United States
May 2007 - Mar 2010
Aug 2007

64000 mi

US $50
Coolant flange replaced. 

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2002 Audi A4 / S4 4-door

turbocharged 4-cylinder automatic AWD

Audi A4 in Georgia, United States
Oct 2007 - Mar 2010
Feb 2008

72000 mi

US $500
Coolant leak. 
Audi A4 in Iowa, United States
Jan 2007 - Sep 2007
Feb 2007

50000 mi
Headlight windshield washer pump failed 
Aug 2007

52000 mi
Coolant Sensor Malfunction Transmission sensor failed causing tranmission to default to "limp home" mode. 

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2002 Audi A4 / S4 4-door

6-cylinder automatic AWD

Audi A4 in Texas, United States
Jan 2008 - Mar 2010
Feb 2008

68000 mi

US $510
Front upper control arms replaced, along with tie rod ends and sway bar links. 
Mar 2008

71000 mi

US $210
Steering rack replaced. Alignment done. 
Dec 2008

81000 mi

US $700
New shocks to replace leaking originals. Upgraded shocks to koni FSD. replaced all front control arms. 

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2002 Audi A4 / S4 4-door

4-cylinder manual 2WD

Audi A4 in South Africa
Sep 2010 - Jul 2013
Dec 2010

119040 mi

R 3000
Oil leak - found pcv pipes cracked. replace all. 
Mar 2011

120900 mi

R 7300
Hose connector at the back of the cylinder head replaced 
Jul 2012

132060 mi

R 850
Alarm siren kept going off 
Jul 2013

137020 mi

R 350
Metal pipe corroded. Replaced temp sender unit 

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2002 Audi A4 / S4 4-door

4-cylinder automatic AWD

Audi A4 in Colorado, United States
Jun 2007 - Mar 2010
Jul 2007

60000 mi

US $1900
Water pump was leaking and needed to be replaced; replaced the timing chain also b/c it's recommended to be changed at 90K miles & have to change the water pump at that change also -- planning on keeping the vehicle, so it was prudent 

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2005 Audi A4 / S4 Repair Histories

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