2005 Audi A6 Audi A6 2005

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2005 Audi A6 repairs by problem area

Engine (38%)

Transmission and Drivetrain (4%)

Brakes and Traction Control (6%)

Suspension and Steering (12%)

Electrical and Air Conditioning (29%)

Paint, Rust, Leaks, Rattles, and Trim (6%)

Other (5%)

Chart based on 247 repairs.
See TSBs and recalls for the 2005 Audi A6.

2005 Audi A6 repair cost distribution

$2500+ (5%)

$1000 - $2499 (18%)

$500 - $999 (16%)

$100 - $499 (23%)

< $100 (38%)

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

Chart based on 182 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2005 Audi A6

Engine not specified

Audi A6 in New Jersey, United States
Nov 2008 - Mar 2010
Dec 2008

44000 mi
Entire Multi-Media Interface (MMI) died. No radio, cd, satellite, phone, nav or set-up features. 
Audi A6 in Ontario, Canada
Mar 2012 - Dec 2012
Oct 2012

159620 mi
Lower outside valance on both drivers and passanger front doors were separating away from the door at the top of the valance. Audi replaced and painted both doors and trim at no cost under the warranty for rust. 
Audi A6 in Estonia
Sep 2011 - Nov 2011
Nov 2011

141360 mi
Power steering pump hose leak. Had to refill fluid every four days. Random starter fault when sold. 

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2005 Audi A6 4dr Wagon

255-horsepower 3.1L V6 6-speed shiftable automatic AWD

Audi A6 in Sweden
May 2014 - Mar 2018
Aug 2014

107500 mi

$165
Car didn't recognize key. Towed it to dealer who told me that it needs a new transponder, the entire steering column needs to be replaced! Costs at least $2000. Clearing of faultcodes made all work OK since, hope it doesn't come back! 
Apr 2015

112840 mi

$800
Change of ABS main module. Amount in US$ (800) 
Feb 2018

129580 mi
ABS / antitheft problem. The ABS is not functioning, it shows ABS / ETS fault. Needs to replace the ABS valve/main module. Also the steering column actuator is faulty, symptoms are that you can't turn on the ignition or start the car. Happens from time to time, you don't know when. My solution is to leave the key in the ignition and lock the car with the spare key, or reset the fault code with VCDS. Needs to replace the whole steering column (including the anti-theft box), costs around 2500 USD in an Audi workshop (and around 1500 in an non-Audi workshop). 

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2005 Audi A6 4dr Sedan

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

Audi A6 in Tennessee, United States
Nov 2010 - Feb 2011
Oct 2010

48965 mi

US $308
Broken Trunk Latch 
Jan 2011

50061 mi

US $708
Valve Cover Gasket Valve Cover Gasket 
Feb 2011

50061 mi

US $1000
Front Control Arm Bushings 
Audi A6 in New York, United States
May 2012 - Aug 2014
Feb 2014

137400 mi

US $10000
Timing chain and tensioners were replaced, as was the torque converter 
Jun 2014

141000 mi
Manifold was replaced but it did not correct the problem, so I was not charged anything. 
Aug 2014

141000 mi
Power steering hose broke. Problem with engine related to manifold never fixed. 
Audi A6 in New Jersey, United States
Dec 2011 - Sep 2013
Sep 2013

68000 mi

US $350
Power steering failure 
Audi A6 in Louisiana, United States
Jan 2011 - Mar 2013
May 2011

35500 mi

US $1036
Power steering hose has a leak. They quoted me $254.58, for part and labor. Originally brought car in for 35k service, but had noticed a slight issue with power steering pump. Also, front brakes and rotors need to be replaced at $511.50. 
Oct 2011

39000 mi

US $1965
Transmission was leaking significant amount of ATF. Dealer replaced gasket and re-filled transmission. Water cooled altenator started making a horrible noise; apparently a bearing failed causing the problem, this bad boy cost around $1000 to replace. 
Sep 2012

46000 mi

US $1500
sway bar bushings wore out & needed to be replaced. bushings failed on Upper linkage (control arms) needed to be replaced 
Audi A6 in Connecticut, United States
Jun 2012 - Jul 2012
Jul 2012

82000 mi

US $1300
car sputters when accelerating,slight cliking outside car when turning the wheel,car vibrates when turning very sharp or doing a uturn 
Audi A6 in Pennsylvania, United States
Feb 2011 - Mar 2011
Mar 2011

89000 mi

US $1300
Car stalled and would not start. Required new fuel pump and emissions sensor 
Audi A6 in Arizona, United States
Feb 2007 - Mar 2010
Apr 2007

23000 mi
airbag light in dash on. This was the third time it has been back for the same problem. replaced module in dash, replaced seatbelt sensor in back seat, then replaced entire seatbelt mechanism. LIGHT is back ON!! Wiperblades replaced and center console doo 
Dec 2009

49000 mi

US $50
Front sway bar bushings and control arm bushings worn and creaking. air bag warning light came on and required software update. 
Audi A6 in Pennsylvania, United States
Apr 2013 - Aug 2015
May 2013

141200 mi

US $780
Coolant leak in the radiator 
Oct 2013

148200 mi

US $2390
High oil consumption. They replaced the valve cover gaskets, it helped some but I'm still going through oil faster than I should. Engine mounts broken, caused warning lights and rough running engine Broken sway bars 
Jul 2014

162000 mi

US $866
Oil leak in oil cooler, possibly fixed. Replaced coolant reservoir. Issues with timing / check engine light. Light is off for now, but timing issue persists. 
Sep 2014

164000 mi

US $50
Leaking power steering hose 
Audi A6 in Michigan, United States
Dec 2014 - Dec 2014
Dec 2014

89000 mi

US $4200
Transmission blew out and had to be completely rebuilt. 
Audi A6 in Ohio, United States
Apr 2015 - Dec 2015
Jul 2015

60200 mi

US $500
Replaced headlight due to faulty motor 
Audi A6 in Alberta, Canada
- Apr 2010
Jan 2010

C $650
start failure 
Mar 2010 Car showing severe electrical problems. Battery drain. Repair trip to diagnoze problems 
Apr 2010

C $250
electric brake failure esm failure 
Audi A6 in Pennsylvania, United States
Jun 2014 - Apr 2017
Jul 2014

104300 mi

US $1000
Hot air was blowing out of the vents, even though the AC was on. On second visit, we replace the valve and the problem went away. Dealers don't know about this issue -- Google it and you will find it. 
Feb 2015

109700 mi

US $2200
Replaced ABS module and pump 
Mar 2016

114000 mi

US $2200
control arms for steering which were wearing for a long time 
Jan 2017

110800 mi

US $500
Very slow leak in tube caused coolant to drip onto main belt, both needed to be replaced. 
Audi A6 in Pennsylvania, United States
Feb 2014 - Jun 2018
Mar 2014

174000 mi

US $3000
Timing chain tensioner failure, caused bent cam chain to skip tooth, bent valves. 
Aug 2014

175000 mi

US $75
Engine Fan harness retainer broke, allowing wire to rub against alternator belt. Wires wore through, alternator belt damaged. 
Mar 2015

183000 mi

US $205
Bank 1 Oxygen sensor 
Jun 2015

189000 mi

US $600
AC Compressor failed. Compressor, Recieverdryer, and orifice tube replaced. System flushed. 
Apr 2017

202000 mi

US $163
Oil check valves under intake manifold were replaced, along with all gaskets for intake. 
Mar 2018

206000 mi

US $500
Power steering return hose leak, required pulling lock carrier to replace. 
Audi A6 in Ontario, Canada
Oct 2010 - May 2012
Nov 2010

53320 mi
Both front windows were slow when rolling up or down. Ordered window guides and replaced on another trip. 
Jan 2011 Takes a long time for engine to reach operating temperature. Shop didn't find any problems as the engine was already warm by the time it was driven to the shop.  
Apr 2011

57940 mi
Engine would take a long time to reach the normal operating temperature. Thermostat has been replaced. Both front power windows were rolling up or down very slowly. Regulators replaced. Problem remained. 
Jun 2011

62620 mi
The front windows are rolling up and down too slowly. parts ordered. In addition, the black paint on switches and buttons are bubbling or coming off, new switches ordered. 
Jul 2011

62920 mi
Parts installed, slow windows and switches fixed. 
May 2012

70680 mi
Trunk Lid struts never worked correctly after dealer replaced them. Nothing wrong with the original set. 
Audi A6 in Sweden
Apr 2013 - May 2013
May 2013

111600 mi

$150
Ignition box failure cylinder 3 
Audi A6 in New Jersey, United States
Nov 2012 - Mar 2015
Dec 2012

99000 mi
Fluid leak. Mechanic found loose clamp on a pump he replaced 6 months ago. Fixed loose clamp for free as it was his mistake. Trunk will not latch closed. Played with latch using key and got it to work eventually, but the problem returns periodically. 
Feb 2013

100200 mi
Power steering pump, which was only 13 months old, failed. Replaced again by mechanic under warranty (even though slightly out of warranty) 
Feb 2015

122000 mi

US $300
Sensor in Ac dead. Part replaced. 
Mar 2015

122000 mi
Many unrepaired problems. Steering pump leak, steering column sensor. Entire engine would have to come out to replace the entire steering column. Broken AC. Broken nav. Broken sunroof. 
Audi A6 in Connecticut, United States
Jun 2011 - Apr 2016
Dec 2011

68000 mi

US $200
trunk latch not engaging 
Apr 2016

149000 mi
timing chain 
Audi A6 in Colorado, United States
Jul 2010 - Jun 2011
Aug 2010

74023 mi

US $3400
new steering column lock out sensor broke and whole column needed replaced all new upper control arms new tires because it wore one down when the column went haywire new steering column lock out sensor broke and whole column needed replaced all new upper control arms new tires because it wore one down when the column went haywire 
Audi A6 in New Jersey, United States
Jul 2009 - Jul 2013
Jan 2010

60000 mi
Slow leak from wiper wash reserve tank. Headlight washer pump replaced under CPO warranty. Right rear light intermittently out. Replaced whole rear light assey under CPO warranty. Wind noise in sunroof after replacing broken springs in sunroof sunshade. Fixed it myself by replacing weather seal in sunroof. 
May 2010

65000 mi
Ticking noise from front wheels noticable on indoor parking lots. Dealer replaced left & right lower steering arms saying the ends are worn out but ticking noise still exists. Don't even know why steering parts were replaced. 
Sep 2010

72000 mi
Nothing. Could not replicate problem! Oil leak detected on valve cover. Was told during 65K maintenace that was catetory 3 and had to be developed to category 1 in order to be covered under CPO. Oil loss increased and so took it in and was repaired by replacing gasket. 
Aug 2011

86000 mi

US $300
A/C Not working and performed Total A/C Diagnostics. Found low charge of R134A A/C Gas and Re-Charges gas. Parking Sensor Buzzer sound is breaking up. Part is only $20 but Labor will cost another $240 so decided not to fix problem. 
Sep 2011

86000 mi
Check engine light came on. Reset ECU with VAG-COM at the dealer and problem dissappeared. Computer was showing lean fuel to air mixture but could not fine cause of problem 
Nov 2011

90000 mi

US $5
Xenon light leveling motor defective warning light came on but dissappeared by itself. Problem has not returned for another 2 weeks. Side marker bulb out warning lit. Bought bulb at Walmart for $5 and self repaired. Warning light is now off. 
Apr 2012

96000 mi

US $300
Check engine light on. Intake vacuum leak found. Intake hose torn found through visual inspection. Part replaced and error codes reset. 

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2005 Audi A6 4dr Sedan

255-horsepower 3.1L V6 6-speed shiftable automatic AWD

Audi A6 in Massachusetts, United States
Jan 2008 - Mar 2013
Jul 2009

80000 mi

US $175
Normal trip when something broke, can't remember what really, mostly little things. 
Oct 2009

88000 mi

US $200
Repair the Back-up sensor 
Jun 2011

116000 mi

US $400
Right front wheel bearing. 
Feb 2012

127000 mi

US $1200
Weird flywheel bolt sheering issue, almost cost me my life, but got it off the road before crazy bad damage. 
Mar 2013

137000 mi

US $2500
Needed a new steering rack. Decided to dump the car after the repair. 
Audi A6 in Alabama, United States
Jan 2016 - Dec 2016
Feb 2016

58300 mi
TPMS sensors needed replaced. Disabled the TPMS system by vag com. Transmission service- normal 
May 2016

60000 mi

US $1750
AC compressor and dryer R & R. 
Jun 2016

60000 mi

US $750
Replace fuel pump 
Audi A6 in California, United States
Feb 2016 - Jun 2016
Feb 2016

93000 mi
Failed Fuel injector, cyl 3 
Audi A6 in California, United States
Jan 2015 - Jun 2018
Jan 2015

118000 mi

US $145
I don't know what subsystem was involved because the issue is an intermittent stalling problem which the shop could not reproduce and therefore could not diagnose or repair. The $145 I paid was for utterly unsuccessful diagnostics. 
Apr 2016

125000 mi

US $1030
During routine maintenance, shop noticed brake vacuum pump had severe oil leak. Replaced pump, $394 for the part. 
Apr 2017

129000 mi

US $306
Initially I got a dash warning about "Left dipped headlight" (dipped apparently means low beam). Shortly thereafter, I got a dash indicator that seamed to be a light bulb with an X through it, which means a light outage. Sure enough, the left low-beam HID headlight was not working. The repair shop replaced the bulb, which seems to have cured the problem. 
Aug 2017

131000 mi

US $220
"Interim" solution for for Takata front passenger-side airbag inflator was installed. I believe the repair was replacement of the inflator with an improved version. Plugged rain drainage openings in sunroof area and cowl (base of windshield) area were cleaned out. It was believed that clogging of these drainage openings was leading to water intrusion into passenger compartment during heavy rain. After our most recent rain, the passenger side footwell carpeting was soaked again, so I consider the "repair" completely UNSUCCCESSFUL. 
Sep 2017

131634 mi

US $312
Gas-charged hood support strut had failed so that it would no longer support the hood. I ordered a third-party aftermarket part from a local auto parts store and installed it myself. Check Engine light went on. My OBD II code scanner showed code P2404, which indicates that the sensor in the EVAP leak detection pump system is returning a value that is out of the acceptable range. Technician at the shop investigated and determined that the EVAP system's purge valve had failed. The valve was replaced with a new one, but I was warned that once this problem was cured, one or more other EVAP system faults might become apparent. No additional issues have surfaced yet. 
Oct 2017

131842 mi

US $609
Check Engine light came on. I checked with OBD-II scanner and found code P0455-- EVAP emissions control system leak detected (no purge flow or large leak). The shop determined that the EVAP system's leak detection pump had failed, so they replaced it. 
Nov 2017

132064 mi

US $290
Recently, whenever we've had significant rain, I found the front passenger seat footwell carpeting soaked. The dealer's previous attempt to solve the problem, by cleaning out the sunroof and cowl drains, did nothing to alleviate the problem. The independent shop had a technician who had seen this problem before and suspected a leak in the drain tube running from the right front corner of the sunroof and down the right A-pillar. The tech had to remove the headliner to get at the drain tube. He found an separated joint in the tube and clamped the joint to secure it. This has apparently solved the problem. Check Engine light wen on again. My OBD scanner showed me that codes for the Evap Control Purge Valve and the Evap Control Leak Detection Pump, previously present separately on recent occasions, were now BOTH present, even though both components had been replaced. The technician could detect no other issues and cleared the codes. He told me that he HOPED these codes had popped up as a result of incomplete clearing of codes after the most recent repair. There was no charge, since the recent Evap Control System repairs were under the shop's repair warranty. In the sixty or so miles I have driven since I got the car back, no warnings have appeared. 
Jan 2018

132000 mi

US $30
HID headlight lenses had become quite cloudy. I had a "headlight restoration" done with a coupon special. Shop (Pep Boys) polished the lenses and applied some sort of protectant. The lenses don't look as good as new but ARE vastly clearer than they were before the restoration job. 
Feb 2018

132860 mi
Driver's door has not been responding reliably to remote unlocking. Most of the time it doesn't work. Shop tech told me Audi has TSB out about the central lock system and that there is a software update that is best done at the dealership service department. Tech said the software update might not be all that is needed to fix the problem, but it should be done first, before any mechanical repair is attempted. 
Mar 2018

133146 mi

US $870
The drivers' door had recently stopped responding reliably to the keyfob remote control for unlocking. Most of the time, I have had to insert the key into the lock to unlock the door. The dealership replaced the lock assembly on the driver's door. 
Audi A6 in Maine, United States
Dec 2007 - Nov 2008
Sep 2008

42000 mi
Right rear wheel bearings diagnosed as failing. Right rear wheel bearings replaced. 
Audi A6 in New Hampshire, United States
May 2008 - Jan 2013
Jun 2008

39000 mi
the button on the drivers side door to lock/unlock door with advanced key was inoperable Surround sound settings resetting to factory settings. Not able to select station presets, cursor kept jumping to top of screen. 
Mar 2011

106000 mi

US $4341
Diagnosed with a stretched timing chain. Replace all chains, sensors, pulleys and gaskets. 
Dec 2011

129000 mi

US $1100
Rear plate lights not lighting. Problem with one the the computer modules. 
Jan 2013

US $1030
Temperature sensor failed causing engine to run lean and overheated catalytic converter Coolant leak at one of the phalanges. Belt tensioner failing causing serpentine belt to rattle. Amplifier failed causing loss of radio, nav, Bluetooth, cd player. 
Audi A6 in Alabama, United States
Oct 2008 - Mar 2014
Jul 2010

77000 mi

US $50
headlight system that follows direction of wheels 
Dec 2012

127000 mi

US $5000
rebuilt engine. 
Apr 2013

131000 mi
rear left brake and turn signal fail to operate intermittently 
Mar 2014

141000 mi

US $6000
timing chains failed. Destroyed engine. rebult engine. Chains failed again. Scrapped car. Will not ever buy another Audi 
Audi A6 in Pennsylvania, United States
Dec 2007 - Jan 2014
Jul 2008

72000 mi

US $50
1. leak detect sensor replaced 2. vacuum hose replaced 3. engine control module replaced (root cause) 
Dec 2008

78000 mi
Trunk will not latch. 
Jun 2009

87000 mi
spring kit for sunshade in sunroof replace after springs had fallen out. 
Jun 2011

121000 mi

US $500
CV joint broken, noisy; replaced. electronic parking brake malfunction, noticed via warning light. Not I function I use. $400+ (wiring harness + label) Will repair soon as I assume need to pass inspection in September 
Mar 2013

149000 mi

US $1600
Replaced wiring harness, controller, and switch for electronic parking brake. 
Jan 2014

160000 mi

US $1900
Multiple check engine codes for cylinder misfires and cam advance. Dealer replaced throttle body and 2 Cam Adjusters. Check engine light remains on after services, need to replace timing chain (a 25+ hr labor) job. will not replace. 
Audi A6 in Alabama, United States
Mar 2016 - Jun 2016
Jun 2016

170000 mi

US $1200
All new control arms after only 2 years. Made the mistake of buying cheap ones off EBAY buy the German ones even those are a gamble if they aren't stamped AUDI 
Audi A6 in Illinois, United States
Feb 2007 - Dec 2012
Jan 2007

31000 mi
Fix power input closest to front dash 
Audi A6 in Massachusetts, United States
Dec 2007 - Jan 2011
Oct 2009

64200 mi

US $50
Fuel gauge fluctuates 
Audi A6 in Minnesota, United States
Jan 2017 - Mar 2017
Feb 2017

83000 mi

US $807
Wheel bearing needed replacing. Also had coolant leaks fixed and power steering clamp replaced. Ended up selling the car soon after as it was costing too much. Would never buy an Audi again. 
Audi A6 in Quebec, Canada
Mar 2017 - Jun 2018
Dec 2017

76260 mi

C $160
Leaky cooling hose. 
Audi A6 in Ohio, United States
Dec 2007 - Sep 2008
Jun 2007

19000 mi
Exterior chrome trim surrounding windows and trunk lid replaced under warranty due to waterspot-like corrosion. Overhead interior light panel replaced under warranty due to broken retaining clips, wouldn't stay in place. 
Audi A6 in Florida, United States
- Jun 2008
Jun 2008

17400 mi
Repair locking mechanism in driver side door 
Audi A6 in Alabama, United States
Jan 2014 - Jun 2016
Feb 2014

100000 mi

US $225
CEL since 2010. Tested both the LDP and the vacuum lines, narrowed it down to an ECU. Exchange ECU with a used ECU and code the ECU to the car. 
Oct 2014

108800 mi

US $50
Sway bar bushings were worn and needed to be replaced. 
Feb 2015

115600 mi

US $170
valve cover gaskets and valve cover bolts 
Audi A6 in Florida, United States
- Jan 2008
Jan 2008

49500 mi
Replaced Catalytic converter 
Audi A6 in Tennessee, United States
- Aug 2008
Jun 2008

32000 mi
Replaced CD changer in glovebox because it was staticy and wouldn't play even brand new clean CDs. Warranty item 
Aug 2008

37000 mi
Replaced drivers interior door panel because the vinyl material CRACKED by the door handle. Covered reluctantly under warranty by AUDI. Clearly a manufacturers defect in the trim panel -- the stresses cracked it from opening and closing the door. 
Audi A6 in New Jersey, United States
Jan 2009 - Jan 2013
Jul 2009

72000 mi
cleared code for "gross evap leak" 
Audi A6 in Texas, United States
Dec 2008 - Mar 2010
Jan 2009

45000 mi
Smoke from the front of the car. Oil cover not put properly from the last oil change and oil was leaking out and spilling on engine. 
Audi A6 in California, United States
Feb 2010 - Jun 2011
May 2010

40000 mi
Moonroof leak. Fixed for free under recall notice. 
Audi A6 in Illinois, United States
Sep 2009 - Mar 2011
Jan 2010 TSB was used to repair the battery being constantly drained. 
Feb 2011

66000 mi

US $890
Power steering line was leaking. Replaced and flushed system out Rear Defrost is not working. Fix was to replace AC head unit. $1000 with parts and labor = Living with no rear defrost! Transmission kicks when cold going in and out of 3&4 gear. Very noticeable, but dealer "Can not replicate" Right Front Wheel Bearing replaced Right rear taillight was grounding out causing all right rear lights to fail 
Audi A6 in Iowa, United States
Nov 2011 - Jul 2018
Jan 2012

US $360
Took it for transmission flush. Vehicle went in 'safe mode' two days later. Returned to dealership for repair. Turned out it was low on fluid, tech did poor job. Audi does not list transmission flush ever to be done so DONT! 
Jan 2013

70000 mi

US $10
Light bulb burned out, day running side light, front right side, inside the bumper. 
Mar 2015

108000 mi

US $220
Rear differential left and right output shaft (axle) seals leaking. Replaced. Parts $70, labor $150 
Feb 2016

117300 mi
Brake fluid replaced 
Jun 2016

118000 mi

US $300
ABS module failed, removed and sent for rebuild to indie near KC. Also connector for rear parking brake motor (electric) failed, corroded broken wire. Patched broken wire. 
Aug 2016

119400 mi

US $15
Connector to passenger side parking brake failed, wire rusted out and broke. Dashboard brake warning light on. Disassembled connector, wire extended and soldered. 
Nov 2016

123000 mi

US $15
Vacuum hose broken due to age and heat (hard plastic). Replaced with aftermarket vacuum hose from Auto-zone. 
Jan 2018

130000 mi

US $465
Replace and reprogram battery,  patch RR parking brake harness, diagnose failing module and install optical loop (temporary) fix 
Jul 2018

133000 mi

US $200
All lower door trims rusted on the inside, thus creating big, ugly gap at the top of each of them. Metal part behind plastic that engages with the door pins rusted, swelling created buy rust flakes caused unsightly gap. I bought used trim pieces, different color from eBay, had them repainted and fitted on my car. They are from little newer model and it seams Audi has slightly changed this design, hopefully for the better. New replacement parts, had I bought it from Audi dealer were $150 each (x4) plus you have to paint them (primed only). It is ridiculous what these companies do to us. Clearly flawed design that customer has to deal with as soon as car is out of warranty. 
Audi A6 in Florida, United States
Apr 2010 - Jun 2011
Jun 2010

60000 mi

US $800
Airbag warning light came on. Needed to replace ignitor. 
Audi A6 in North Carolina, United States
Aug 2010 - Dec 2013
Oct 2010

95000 mi

US $800
Suspension "boots" worn and replaced.  
Jan 2012

109000 mi

US $2500
Head gasket Replace fuel pump and filter Replace water pump and timing belt Replace surpentine belt and roller CV boot replacement 
Dec 2012

124000 mi
Fluid dropped levels in brakes. Bled and replaced, checked for leaks, nothing found. 
Mar 2013

125000 mi

US $235
Vibration mount had deteriorated. Replaced. 
Aug 2013

128600 mi
Vents run hot air when A/C is indicated. 
Dec 2013

130000 mi
HVAC duct issue never fixed, would have been $1,200. 
Audi A6 in New Jersey, United States
Oct 2010 - Jun 2011
Nov 2010

90100 mi

US $1950
95000 mile service. Upon pickup heard tapping under hood at right side head. Reported to dealer and was told to drive it and it would go away. Towed to dealer with no start. Timing chain tensioner failed right side cam skipped timing. Towed to dealer with no start. Timing chain tensioner failed right side cam skipped timing.  
Audi A6 in Indiana, United States
Nov 2010 - Jun 2011
Dec 2010

78000 mi
ongoing problem with driver-side rear turn signal/brake light that intermittently stops working. Dealer replaced taillight assembly for 3rd time. Unsuccessful - again! 
Jan 2011

US $765
Service manager said they replace all the light bulbs with genuine Audi parts - thought maybe they hadn't done that previously. Still unsuccessful. Gas flap would open on its own when I got into the car. They were able to reprogram some code and successfully fixed that problem. A valve seal (driver's side cylinder head) suddenly started leaking and the engine began to smoke - while my car was in the shop! Replaced three seals. 
Feb 2011

78600 mi
I am still waiting for the dealer to acquire a loaner car for me to use while they try once again to find a fix. In the meantime, I'm trying to avoid making any left turns or changing lanes on the highway. 
Jun 2011

80000 mi
Brought Audi to dealer for routine maint. end of June. They said needed brakes (min. $500). Decided to give up on electrical problem & spend no more $$ on the car. Traded for a 2011 Nissan Maxima. I feel cheated by Audi Company. 
Audi A6 in New Jersey, United States
Nov 2010 - Dec 2011
Mar 2011

62000 mi

US $150
Ignition coil #5 replaced. 
Dec 2011

73000 mi

US $50
rear fog lights. 3 or 4 different audible signals indicate bulbs out, but I cant really see which ones are out even when I have someone else in car and look myself. Don't even know what a 
Audi A6 in New York, United States
Jul 2010 - May 2017
Sep 2010

53000 mi

US $400
Oil leak, check engine light. Had to return it again because they did not completely fix oil leak. 
Jan 2011

56000 mi

US $700
trunk would not operate, needed 55,000 maintenance. oil change, electrical etc. 
Jan 2012

57300 mi

US $219
Repair of a problem 
Aug 2013

84000 mi

US $2100
ABS system had to be repaired. I kept hearing a clicking noise when I pulled out of my driveway.  
Apr 2014

88500 mi

US $470
Adaptive headlight is out. For replacement over 1000.00. 
Jan 2015

88200 mi

US $700
Problem with left brake, turn signal and Parking brake light. Electrical 
Apr 2016

105500 mi

US $2100
Engine light on. Dealer said they fixed it, but several days later the light came back on. Hope it's not the transmission. Probably the gas tank, which costs around $2,100. (This possibility was suggested back in 2014.) Update: light later went off again and stayed off for a while. 
May 2017

116000 mi
Engine light is back on, the car is shaking. Went to the dealer/repair and they told me it would cost 15,000 for a new engine or get a new car. Furious, I took the car to a repair shop near my home that specializes in foreign cars. They will be looking at the problem next week. The car has been shaking and engine light comes on. The second shop also says a new engine is necessary, but would not make financial sense. So time for a new car. Will be parting the Audi out or donating it. 
Audi A6 in Indiana, United States
Dec 2011 - Mar 2012
Jan 2012

US $800
Replaced heating unit and control unit for heat/ac 
Audi A6 in Massachusetts, United States
May 2009 - Aug 2012
Nov 2009

76000 mi

US $1284
Heater blowing hot and cold air from random vents; fixed through TSB. New battery drains prematurely; brake light TDB. Advanced Key stopped working; replaced start/stop button. Drivers Auto Down does not work consistently; replaced window pad. 
Jun 2010

83000 mi

US $210
Driver and passenger side washer nozzle. 
Aug 2010

84800 mi

US $1400
Front passenger occupant sensor need to be replaced. Airbag light came on. Part was not in stock; dealer had to order from Germany, est shipping 5 days, repair 4 hours max. 
Dec 2010

89000 mi

US $1200
Both front upper control arms and sway bar had to be replaced. 
May 2011

93000 mi
driver side brake lamp: replaced assembly because LED 
Jul 2011

95000 mi

US $200
Right DRL out, and check engine light due to evap leak. 
Jun 2012

105000 mi

US $1600
replace ABS module 
Aug 2012

105000 mi

US $1600
SRS Airbag light on. Needs new center rear seat belt sensor. 
Audi A6 in Illinois, United States
May 2009 - May 2012
Jun 2009

42000 mi

US $160
The car was taken in early for it 45,000 service. I had to pay full price for the service aprox $110. The A/C compressor was broken so the part was ordered, then installed a week later. It was covered under the CPO Warranty. $50 deductable CPO warranty 
Jul 2009

42000 mi

US $50
The window washing fluid motor was replaced. 
Aug 2010

61000 mi

US $128
Air Conditioning unit was recharged with Freon 
Nov 2010

67000 mi

US $140
Replaced fuel pressure sensor and fuel filter, problem still exists.  
Dec 2010

68000 mi
Low pressure fuel pump replaced. Cold start missfire CEL and rough idle during cold weather start up sometimes the car would die. Dealer said the car had carbon build-up on the intake valves, dealer suggested using seafoam instead of taking apart intake and manually clean I elected to try the seafoam first and it helped so for now I will not have the intake valves cleaned by the dealership. 
Jun 2011

77000 mi

US $45
Fuel pump had to be replaced again. Fuel filter was also replaced. Tech said the fuel filter was clogged causing the fuel pump to fail. 
Jan 2012

86700 mi

US $1400
The car had the intake removed and excessive carbon deposits removed from the intake valves. Vacuum evac pump replaced Spark plugs replaced 
Mar 2012

90000 mi

US $1100
The car was in for to both a high pressure fuel pump replacement and a low pressure fuel pump replacement 
Audi A6 in Maryland, United States
Mar 2009 - Oct 2014
Apr 2009

59000 mi

US $125
found scrub pad in throttle body from previous service 
Jan 2014

106000 mi

US $1000
Leaking upper radiator hose. valve cover gaskets leaking 
Audi A6 in California, United States
May 2008 - Sep 2017
Feb 2008

27625 mi
Airbag light came on. Attributed to software fault. Software updated. Engine light came on.Found multiple ignition misfires, swapped coils and sparks plugs, to return @later date. 
Nov 2008

33874 mi
Airbag light is on.Found faulty seat belt buckle shorted out, replaced. 
Jan 2009

36895 mi
Engine light is on, traced to a faulty key tumbler.Replaced, also found sporadic misfires in cylinder 1 and 5. Switch may have been the cause for misfire. Start switch inop at times. Replaced 
Mar 2009

38147 mi
Engine light is on. Vehicle misfiring due to faulty intake system, used fuel injection service to clean intake system. 
Jun 2009

40576 mi
Engine light ON. TSB 2011719/6 replaced all lifters and rocker arms. The symptoms were excessive cold start misfires fault codes. Engine light goes on and off. Fault codes for ramdom multiple misfires. Factory service bulletin ordered all rocker arms,lifters and corresponding gaskets replaced. 3 spark plugs replaced. Hope the misfire problem has gone away! 
Aug 2009

42486 mi
Timing Chain Cover flared in right side causing to leak oil which dripped into the exhaust creating smoke and bad odor.Cover was replaced by dealer. There was an update to the software, but dealer did not install because was not part of warranty ($250) 
Dec 2009

46000 mi
More problems with engine light coming on. Coils are supposed to be replaced by manufacturer, but owner needs to wait for call from dealer. Car is out of warranty if yellow light is due to another reason owner will be charged. Had enough of Audi!!!!! 
Jan 2012

57000 mi

US $220
Intake manifold removed, many parts replaced due to continuos engine misfiring, this problem is occurring since car had 27000 miles, coils were never replaced even when Audi ordered to do so by dealer. Rear lid latch failed to lock 
Mar 2012

60000 mi

US $632
They found several problems inside engine like broken valve springs. They replaced quite a few parts and rebuilt half of the engine. I only paid about 15 percent of the total. Finally after two years the car is performing well. 
Audi A6 in California, United States
Jun 2009 - Dec 2014
Jul 2009

56000 mi

US $825
car was diagnosed with a #3 fuel injector that was stuck wide opened, and one side of air intake manifold was not opening/closing correctly.fuel injector had to be replaced. also had all spark plugs replaced. primary cost of repair went labor. ouch! 
Apr 2012

106000 mi

US $2000
In-take manifold and housings malfunction and to be replaced. 
Mar 2014

142000 mi

US $100
Engine head valves were leaking oil for about a year. Replaced valve gaskets and spark plugs on both sides. Peripheral air vents occasionally blowed hot air when ac was on. Found fix online. AC valve module needed cleaning. 
Jul 2014

151000 mi

US $10
There was a vacuum leak causing check engine light to come on. Check and saw a section of vacuum hose that needed replacing. That did the job. 
Dec 2014

160000 mi

US $700
Coolant leaking at air cooler-engine connection due to wore gasket. Oil leaking from driver side at the back of engine. Cause was due wore sealant in time chain caps. Caps removed and added new sealant. 
Audi A6 in Ontario, Canada
Jun 2009 - Oct 2010
Jul 2009

68200 mi

C $750
Fuel injector #2 failed, needed to be replaced. Apparently it's an AUDI "blocked" part. This means that the replacement must be done at a dealership (can't be taken to a 3rd party garage) 
Sep 2009

68820 mi

C $1700
Access/Start Control unit was fried. The car would not start. Part had to be ordered from Germany. Audi of Canada refuses to acknowledge that the TSB should have been covered under warranty as it was a known issue for at least 2 years. 
Jun 2010

75640 mi

C $40
The warning for the rear right brake/turn signal light goes on intermittently. However, the bulb is fine... seems to be an LED contact problem. Likely, the whole fixture needs to be replaced @ $300 (AUDI likes this approach a lot). 
Sep 2010

77500 mi

C $600
Front passenger headlight burned out, $350 after tax... Did the carbon injector cleaning service for $250, we'll see what that accomplished. 
Oct 2010

77500 mi
When sold the brake light was still intermittently not working (tripping the alert on the dashboard) - by extension the right turn signal wouldn't work either because it was the same light. 
Audi A6 in Ireland
Feb 2012 - Sep 2014
Jun 2012

58900 mi

€110
Throttle valve control problem . P1545 
Apr 2013

63100 mi
Throttle valve control unit replaced part no Ae4015950j 
Audi A6 in Idaho, United States
Sep 2010 - Aug 2013
Jul 2011

85700 mi
Sunroof switch quit functioning and was freewheeling. Known TSB available for the problem and switched replaced at no cost. 

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2005 Audi A6 4-door

turbocharged 6-cylinder manual 2WD

Audi A6 in Great Britain
Jun 2016 - Jan 2018
Sep 2016

114000 mi

£1000
Needed a new Clutch and Multi Flywheel 
Oct 2017

118000 mi

£345
Front offside shock absorber. Something to do with emission control. 
Jan 2018

119000 mi

£130
Had battery replaced 

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See TrueDelta's information for all Audi models.

2005 Audi A6 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 2005 Audi A6 problems occur, check out our car reliability stats.