2004 Audi A4 / S4 / RS4 Audi A4 / S4 / RS4 2004

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2004 Audi A4 / S4 / RS4 repairs by problem area

Engine (47%)

Transmission and Drivetrain (7%)

Brakes and Traction Control (6%)

Suspension and Steering (13%)

Electrical and Air Conditioning (21%)

Paint, Rust, Leaks, Rattles, and Trim (4%)

Other (3%)

Chart based on 519 repairs.

2004 Audi A4 / S4 / RS4 repair cost distribution

$2500+ (7%)

$1000 - $2499 (19%)

$500 - $999 (27%)

$100 - $499 (37%)

< $100 (10%)

Chart based on 227 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
Non-members can see only ten 2004 Audi A4 / S4 / RS4 repair histories. Log in or join us to see them all.

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

49000 mi

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 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

41000 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. 
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 kets 
Jul 2012

92000 mi

US $1000
Fuel pump failed. Fuel filter also replaced. 

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2004 Audi S4 4dr Wagon

340-horsepower 4.2L V8 6-speed manual AWD

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

42440 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

105840 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 - Jun 2013
Nov 2012

108500 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 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 - Mar 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. 
Audi S4 in Norway
Dec 2014 - Aug 2016
Jan 2015

156000 mi

$600
Changing the valve seals. Only natural for an engine that's been running this flawlessly for so long. 
Audi S4 in Minnesota, United States
May 2013 - Feb 2016
Dec 2013

65000 mi

US $700
Intake gaskets. 
Apr 2015

77300 mi

US $5600
Rear main seal needed replacement. 
Feb 2016

83000 mi
Valve cover gaskets 
Audi S4 in California, United States
Dec 2014 - Jan 2015
Jan 2015

166000 mi

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 Alaska, United States
Jul 2014 - Oct 2014
Sep 2014

79000 mi

US $450
Transmission revving high before changing gears 
Oct 2014

79000 mi
Secondary air system problem emissions 
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 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 Georgia, United States
Jul 2010 - Jun 2016
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

88700 mi

US $250
Low Pressure Power Steering return line that runs next to the exhaust manifold failed. Cracked after years of heat cycles. 
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 
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 Florida, United States
Aug 2009 - Mar 2010
Dec 2009

86000 mi
Valve cover gaskets. serpentine belt, pulley, & tensioner TSB front brake pads and rotors 
Audi S4 in Massachusetts, United States
Jan 2010 - Jun 2016
Feb 2011

50500 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). 
Audi S4 in Maryland, United States
Oct 2008 - Oct 2014
Jan 2010

126000 mi

US $365
Changing rear brake pads and rotors for wear (1st time, so they lasted a long time) 
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

146700 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... 
Oct 2011

159000 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

174000 mi

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

178000 mi
Wheel bearings needed replacement. 
Nov 2012

180500 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

188000 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 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 California, United States
Jun 2013 - Jan 2014
Oct 2013

86000 mi

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

88000 mi

US $450
Faulty crank position sensor 
Audi S4 in Indiana, United States
Mar 2010 - Jun 2016
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

128000 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. 
Jul 2013

130229 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. 
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
Jan 2012 - Feb 2012
Feb 2012

82000 mi

US $110
Fan Broke 
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 Georgia, United States
Aug 2012 - Mar 2013
Dec 2012

66000 mi

US $210
Power steering pump spline connector and sleeve replaced. 
Audi S4 in California, United States
Apr 2010 - Feb 2015
Aug 2010

97700 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

103500 mi
Passenger side floater was reading twice the normal Ohm rating, replaced unit. 
Jan 2011

107000 mi

US $450
Replace font brake pads and rotors. 
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. Rear brake pads replaced. 
May 2014

130000 mi

US $400
Front brake pads replaced 
Jun 2014

132000 mi

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

132700 mi

US $1200
Replaced worn bushings in front control arms and replaced upper control arm to repair worn tie-rod 
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 2012

78700 mi
New discs and pads 
Apr 2013

89000 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

95000 mi

US $700
Starter motor replacement 
Jul 2014

103000 mi

US $1200
Power steering pump failed 
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

75000 mi

US $699
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

81700 mi
one tie-rod end frozen, one old and sloppy 
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 New York, United States
Jun 2011 - Jun 2016
Jan 2012

32700 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
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 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. 
Audi S4 in New Jersey, United States
Nov 2011 - Dec 2011
Dec 2011

120000 mi

US $335
Replace front passenger wheel bearing. 
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 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 Replace brake pads; rotors machined. Replaced engine mount and snub mount. CV boot replaced. 
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. 
Apr 2014

109000 mi

US $500
Front brake rotors and pads. 
Audi S4 in Tennessee, United States
May 2015 - Jun 2015
May 2015

157000 mi

US $300
Replace leaking valve cover gaskets 
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 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 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 Arizona, United States
Sep 2009 - Jun 2016
Oct 2009

37000 mi

US $200
AC compressor failure 
May 2010

40000 mi

US $400
valve cover gasket leak 
Mar 2011

48000 mi

US $700
replaced brake pads 
May 2012

56500 mi

US $150
power steering pump 
Nov 2012

58700 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

68000 mi

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

77000 mi

US $120
Replaced right rear window regulator 
May 2016

77700 mi

US $150
replace drivers front window regulator 
Audi S4 in Puerto Rico
Dec 2008 - Oct 2011
Jan 2009

21000 mi

US $310
Mass Air Flow was replaced. 
Mar 2009

22000 mi
The previously changed mass air flow was fine. The filter was installed the wrong way. The dealer gave me a credit for the repair. 
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 Maryland, United States
Jul 2008 - Jun 2012
Aug 2008

46000 mi

US $240
New rear rotors (old rear rotors were too worn to pass MD state inspection) 
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 Wisconsin, United States
Nov 2009 - Jun 2011
Dec 2009

103000 mi

US $9000
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 $1035
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 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 California, United States
Feb 2010 - Jul 2011
Jul 2011

16000 mi
oil leak pass side valve cover 

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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

57640 mi

C $1356
replaced front upper suspension bushings  low brake fluid light came on, dealership inspected brakes and replaced rear rotors and pads 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

68200 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

70040 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
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

US $700
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 Michigan, United States
Feb 2010 - Dec 2014
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

120000 mi

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

131700 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 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

45300 mi

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

55500 mi

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

57700 mi

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

70000 mi

US $3800
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

80300 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
Front pad/rotor replacement.  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. 
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. 

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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

76000 mi

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. 
May 2016

81000 mi

US $500
Needed new rear brakes 
Audi A4 in Vermont, United States
May 2010 - Jan 2013
Jul 2010

91700 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 2011

107000 mi

US $400
Warped front rotors, replaced all rotors/pads 
Sep 2012

132000 mi

US $250
Cam seals and valve cover gasket 
Jan 2013

134000 mi

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 
Nov 2010

80300 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 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 2016
Nov 2009

91140 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

99600 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

109700 mi

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

125200 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

126860 mi

R 23999
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 
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 
Audi A4 in North Carolina, United States
Oct 2010 - Dec 2015
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

110300 mi

US $125
EPC light and Check Engine P0102. Changed MAF Sensor and Vaccum hose replaced 
Jan 2013

128300 mi

US $55
Rear brake pad replacement 
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

152300 mi

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

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2004 Audi A4 4dr Sedan

turbocharged 170hp 1.8L I4 6-speed manual AWD

Audi A4 in Pennsylvania, United States
Mar 2014 - Sep 2015
May 2014

86000 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 Queensland, Australia
Feb 2015 - Mar 2016
Feb 2015

169260 mi

A $350
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. 
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 New Jersey, United States
Aug 2013 - Jun 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 
Audi A4 in Oregon, United States
May 2012 - Jun 2016
May 2012

122000 mi

US $300
Fuel Pump needed to be replaced 
Oct 2012

125300 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 
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 Washington, United States
Jul 2011 - May 2015
Jul 2012

88300 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

94700 mi

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

98700 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 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 Ontario, Canada
Jul 2012 - Feb 2016
Aug 2012

127680 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

137000 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

151240 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 
Jun 2015

163680 mi

C $250
No problems Just due for new brakes 
Feb 2016

172980 mi

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

207000 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

246300 mi

US $350
steering rack has been leaking for last 100k miles 
Audi A4 in Massachusetts, United States
Nov 2008 - Jun 2016
Jan 2010

78300 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

111300 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

169500 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

183000 mi

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

184700 mi

US $350
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) 
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 
May 2011

77460 mi

C $700
Coolant temperature sensor intermittently not working 
Sep 2011

81840 mi

C $350
Replaced rusted exhaust flex pipe 
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 Rhode Island, United States
Feb 2010 - Dec 2012
Nov 2010

124000 mi

US $900
Rear tires and brakes to pass stae inspection 
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 Washington, United States
Sep 2009 - Jun 2016
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 

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2004 Audi A4 4dr Sedan

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

Audi A4 in Virginia, United States
Dec 2014 - Jun 2015
Jan 2015

107000 mi

US $1700
Blown head gasket 
Jun 2015

123000 mi

US $250
Turbo inlet hose split. 
Audi A4 in Pennsylvania, United States
Feb 2009 - Jun 2016
Jul 2009

45000 mi

US $365
Needed new brake pads 
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

54500 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. 
Audi A4 in Texas, United States
Nov 2015 - Mar 2016
Mar 2016

170000 mi

US $225
Replace PCV hoses Leaking coolant flange and heater hose coupler 
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 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 California, United States
Aug 2009 - Jun 2011
Aug 2009

63500 mi

US $30
Replace failed coil. 
Jan 2010

68000 mi

US $520
Fuel Pump Failed. 
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 Pennsylvania, United States
Mar 2014 - Dec 2015
Nov 2014

121000 mi

US $200
Flush and purge heat exchanger 
Apr 2015

126300 mi

US $25
Harmonic balancer replaced 
Sep 2015

133000 mi

US $50
Turbo Wastegate Actuator 
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 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 California, United States
Sep 2007 - Jun 2012
Oct 2007

40000 mi

US $350
wheel bearings replaced 
Feb 2009

49000 mi

US $500
Rear brakes replaced oil changed 50k service. 
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 
Feb 2012

70000 mi

US $500
Needed new front brakes pads and rotors 
Mar 2012

71000 mi

US $70
Leaking hoses to be replaced 
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

87000 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

73340 mi

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

98540 mi

C $150
drivers front window regulator failed again 
Feb 2013

107560 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

128300 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

133300 mi

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

140500 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. 
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 Connecticut, United States
Nov 2010 - Jan 2011
Dec 2010

99000 mi

US $1100
Replacement of fuel gauge system. 
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 Missouri, United States
Jul 2010 - Jan 2014
Jan 2012

90000 mi

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

110000 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 Illinois, United States
Jun 2011 - Jun 2012
Feb 2012

89300 mi

US $100
Rear brakes needed new pads at about 87,000 miles 

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2004 Audi A4 4dr Sedan

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

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

80000 mi

US $350
some sensor related to the xenon headlight 

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2004 Audi A4 4dr Sedan

220-horsepower 3.0L V6 6-speed manual AWD

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

95700 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 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

110000 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 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 Louisiana, United States
Nov 2009 - Jun 2011
Dec 2009

41000 mi

US $1041
Sudden fuel pump failure 
Audi A4 in Zambia
Oct 2013 - May 2014
Nov 2013

70360 mi

$300
Cylinder misfire and one coil pack was found to be faulty and then replaced 
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 Maryland, United States
Apr 2012 - Jun 2016
Jun 2012

57000 mi

US $20
Brake switch sensor 
May 2014

79000 mi
Replaced pads (front and rear) and rotors (rear) 

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2004 Audi A4 2dr Convertible

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

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 Massachusetts, United States
Apr 2010 - Jul 2016
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

75500 mi

US $145
replaced transmission mount 
Sep 2011

79000 mi

US $500
engine coolant temp. sensor 
Jan 2012

81300 mi
crankcase breather system faulty causing oil consumption 
Aug 2012

84300 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 
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. 
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

42500 mi

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

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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 2016
Jun 2013

99000 mi

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

110000 mi

US $320
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 / RS4

Engine not specified

Audi S4 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 S4 in New York, United States
Dec 2011 - Jan 2013
Jan 2013

87000 mi

US $200
Had to replace maf sensor 
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. 

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2004 Audi A4 / S4 / RS4 4-door

turbocharged 6-cylinder diesel CVT 2WD

Audi A4 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

84000 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

85300 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

80800 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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See TrueDelta's information for all Sedans, Wagons, and Convertibles.
See TrueDelta's information for all Audi models.

2004 Audi A4 / S4 / RS4 Repair Histories

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently 2004 Audi A4 / S4 / RS4 problems occur, check out our car reliability stats.