2002 Audi A6 / S6 Audi A6 / S6 2002

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2002 Audi A6 / S6 repairs by problem area

Engine (52%)

Transmission and Drivetrain (16%)

Brakes and Traction Control (6%)

Suspension and Steering (13%)

Electrical and Air Conditioning (8%)

Paint, Rust, Leaks, Rattles, and Trim (1%)

Other (5%)

Chart based on 309 repairs.
See TSBs and recalls for the 2002 Audi A6 / S6.

2002 Audi A6 / S6 repair cost distribution

$2500+ (4%)

$1000 - $2499 (19%)

$500 - $999 (20%)

$100 - $499 (33%)

< $100 (24%)

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

Chart based on 258 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2002 Audi A6 / S6

Engine not specified

Audi A6 / S6 in Pennsylvania, United States
Nov 2013 - Nov 2013
Nov 2013

133000 mi

US $5000
Transmission slips. Transmission was replaced. 
Audi A6 / S6 in British Columbia, Canada
Jul 2009 - Mar 2010
Aug 2009

86800 mi
Car overheated took to the Garage - they checked computer found no problem, went on 2 hour high speed trip red, warning overheating came on had car towed 150KM, thermostat replaced. 
Audi A6 / S6 in Massachusetts, United States
Apr 2015 - Apr 2015
Apr 2015

173000 mi

US $1300
Replacement of the PLASTIC pipe that carries coolant to the rear of the engine. 
Audi A6 / S6 in California, United States
Dec 2011 - Jan 2012
Jan 2012

US $400
Front bearings are VERY noisy. Repair attempted last year (DIY) with aftermarket bearing brand:FAG. Seems no good. quieter, but still noisy. Purchased genuine Audi bearings, and will install soon (myself). Check Engine Light and OBD2 code P0421. I will replace all 4, O2 sensors. Supposedly, Bosch states the service life is 100k miles. Mine have 150k on them. Hoping for no engine light, and better mpg! 

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2002 Audi A6 / S6 4dr Wagon

340-horsepower 4.2L V8 5-speed shiftable automatic AWD

Audi A6 / S6 in Minnesota, United States
Mar 2003 - Jun 2018
Jun 2011

130000 mi

US $680
Both front drive axle outer boots torn, discovered when I was changing oil. Brought to shop and replaced with new complete axel shafts. 
Aug 2011

131700 mi

US $33
replaced right front outer tie rod end, DIY, less than an hour, part bought on internet for $33 
Jun 2012

139000 mi

US $25
Water Temp Sensor failed, replaced myself. 
Nov 2012

145300 mi

US $700
Upper Control arms, tie rods,front brakes 
Jun 2013

148000 mi

US $300
Right Rear wheel bearing 
Jul 2013

148800 mi

US $1000
Bad AC Clutch, replaced with new compressor, drier etc and replace comfort control module. 
Dec 2013

155000 mi

US $160
Cooling system return line broke at fitting behind reservoir 
Mar 2014

157000 mi

US $520
Serpentine belt tensioner replaced. 
May 2014

158000 mi

US $59
Driver door latch cable broke. 
Aug 2014

160100 mi
Replaced electric condenser cooling fan 
Sep 2016

180000 mi
Normal brake job on all 4 with rotors and pads, Had a caliper with torn boot on right rear replaced, mechanic noted front rubber brake lines showing age crack, replaced both. 
Audi A6 / S6 in Minnesota, United States
Sep 2009 - Nov 2009
Nov 2009

110000 mi
Needed a new catalytic converter when sold. 
Audi A6 / S6 in Colorado, United States
Nov 2008 - Jul 2018
Dec 2008

76500 mi

US $13
drivers side outer CV boot rupture. Replaced with mcquay-norris boot kit from local auto parts store for $13. owner replaced. 
May 2009

79000 mi
bank 1 catalytic converter element became loose inside cat. housing bank 1 catalytic converter element became loose inside cat. housing - rattling while driving. Taken to dealer 
Jun 2009

79000 mi
loose catalytic converter element on passengers side replaced under original factory warranty (10yr/100k miles for S6) 
Dec 2009

80000 mi

US $52
Micro switch inside drivers door latch broke - various systems in the car rely on knowing the door is open or closed. Replaced latch assy with used unit from '04 model A6 
Aug 2010

82000 mi

US $105
Electronic Stability Program (ESP) light on dash during/after anomalous anti-lock brake engagement at speeds 20-50MPH. System scan reports "Yaw Sensor - signal intermittent" or "Yaw Sensor - circuit failure. Yaw Sensor replaced, however, inside 25 miles the problem (ESP light in instrument cluster) was back. Vehicle owner investigated further and determined a faulty electrical connector/contact was to blame. The problem has not returned since. 
Dec 2011

85000 mi
Original Battery replaced 
Feb 2012

86000 mi

US $809
OE dampers worn out; OE upper control arm bushings worn/torn. Torn bushings cause extreme inner shoulder of front tire to wear to "cord". Replaced dampers/springs with ST 90026; Replaced rubber bushings in upper control arms. Replace tire. 
Aug 2012

88900 mi

US $500
Replaced upper control arms with adjustable arms to correct front wheel camber to within mfg. specs. 
Dec 2012

91000 mi

US $87
Replaced the heated/auto dimming mirror glass - original unit leaked/turned brown. 
Jan 2013

92000 mi
Removed, cleaned, lubricated the heater blower motor. These are known to make a bird chirp like noise over time. A little $0 TLC is all that's needed. 
Apr 2016

99000 mi

US $100
Secondary air injection pump bearing noisy/failed. Removed large fuse in ECU box. Manually set readiness 
Apr 2018

104000 mi

US $115
Duralast Gold battery, which was new 7 years ago, began showing signs of fading. Replaced with genuine Audi/VW battery 000-915-105-DJ 
Audi A6 / S6 in California, United States
Sep 2010 - Jul 2012
Jan 2011

95000 mi

US $155
Turn signals functioning intermittently. Diagnosed problem online (AudiWorld.com) as failed turn signal relay; shop confirmed relay failure; replaced relay and corrected problem. 
Nov 2011

104000 mi

US $1300
Battery light warned on Sunday; drove car to shop on Monday but didn't make it. Alternator gave out. Required new alternator and battery. Torn CV boot replaced. 
Audi A6 / S6 in District of Columbia, United States
Oct 2009 - Dec 2010
Aug 2010

76900 mi

US $350
Both mufflers replaced, one under Midas warranty. 
Audi A6 / S6 in Florida, United States
Oct 2009 - Sep 2013
Aug 2010

65000 mi

US $300
Car was leaking water during heavy rain from cabin air intake into the passenger footwell of car. Previous dealer main had replaced battery incorrectly after doing main and pinched the intake seal allowing water through the air intake. 
Sep 2010

71000 mi

US $2200
Thermostat stuck in closed position and car overheated. Temperature sensor broke. As front end required removal for thermostat replacement, I replaced timing belt and 80K service at same time. 
May 2012

88800 mi

US $2700
Right axle broke. Noticed noise before catastrophic failure. I had to rent a car for days that repair took. Ordered new Axle from Raxles as Audi of America was out of Axles. 
Feb 2013

95800 mi

US $2600
Engine oil cooler pipe broke. Required engine to be lowered after talking mech out of pulling engine. Talked mech down from 35 hours of labor to 16. Piece is a 1 inch piece of plastic. Probably costs cents to make. 
Audi A6 / S6 in Washington, United States
Jun 2008 - Sep 2012
Mar 2009

85000 mi

US $750
Bad thermostat causing overheat. Due to design, work ultimately included replacing timing belt, waterpump, serpentine belt, and associated rollers and tensioners. Torn and cracked outer cv boot, replaced CV joint on torn side, replaced boot on cracked side. 
Apr 2009

86000 mi

US $200
Replace front control arms due to age/wear of suspension bushings 
May 2009

86000 mi

US $6
cracked vacuum lines for Secondary Air Injection system caused CEL to come on 
Sep 2010

102000 mi
Failing clutch pack in automatic transmission. On hold while we research solution options (shop repair, self repair, convert to manual transmission) 
Mar 2011

105000 mi

US $4000
Automatic transmission clutch basket failure 
Jul 2012

113200 mi

US $4100
Defective electric fans and controller, stuck thermostat 
Audi A6 / S6 in Oregon, United States
Feb 2011 - Feb 2015
Sep 2011

124000 mi

US $575
Oil leak near rear main seal. Resealed upper oil pan. Looks okay for now. 
Jan 2012

127500 mi

US $875
replaced front oxygen sensors, $575 replaced leaking left side transzxle oil seal at drive axle, $300 flange. had noticed burning smell. 
May 2013

144300 mi

US $130
oil leak 
Sep 2013

145000 mi

US $600
Replacement 
Audi A6 / S6 in New Jersey, United States
Jan 2007 - Jun 2018
Feb 2007

48000 mi

US $50
Heated seat element replacement. Audi does nto provide the total cost, but it was large. I paid only $50 deductible 
Mar 2007

49000 mi

US $265
Torn CV boot replaced. Driveable but would have resulted in permanent damage to joint. 
Jun 2007

50000 mi
Thermostat stuck - closed. Car was in danger of overheating. No price give, but this is a 5-7 hour job on a 4.2L audi. Covered under COP warranty. At the same time I paid to have the 60k timing belt service done (since the first 5-7 hours were covere 
Oct 2007

53000 mi

US $1100
Failing Tie Rod ends (both) and upper control arms (RF). Control arms possibly damaged by previous work - not sure. Also did alignment and preventative replacement of cracking CV joint boot. 
Sep 2010

67000 mi

US $150
clamps and tubing connecting cats to mufflers rusted away and was replaced with new. 
Dec 2010

68000 mi

US $300
Sun visor broke, Had to be replaced, as well as securing clip. 
Jan 2011

70000 mi

US $40
coolant temp sensor failed. I ordered parts, antifreeze, and did the job myself. 1+ hours work ( reported at zero cost) + $40 total parts. 
Jun 2011

72000 mi

US $511
right front wheel bearing making significant noise 
Aug 2012

81700 mi

US $800
Broken rear spring required replacement of set, alignment. At same time other components were replaced, bringing total to about $1700. Thee incremental costs were not included. 
Nov 2014

93900 mi

US $150
Power steering pump noise and aerated fluid. Found loose connection to fluid reservoir. replaced hose, tightened and check some other odd (unrelated) issues. 
Jun 2015

96000 mi

US $50
Not sure, not fully identified. Steering noise and mechanical "something" felt. Could be a ball joint but they all feel tight. Could be an obstruction, but none yet found. On the S6 the rack is buried. More to come 
Jul 2015

96200 mi

US $200
Diagnosed and replaced LF upper control arm. 
Mar 2016

99000 mi

US $15
Replaced worn out (torn) vacuum lines that caused a CEL. 
Sep 2016

100000 mi

US $100
corrected sticky piston, replaced piston seal, greased sliding rails. Also did rotors (IMO prematurely) but did not include time or cost per your instructions. 
Feb 2018

105000 mi

US $500
wheel bearings replaced, slight movement and noise detected 
May 2018

105000 mi

US $200
two upper control arms replaced. Slight movement and noise. Known to have short life. 
Audi A6 / S6 in Florida, United States
Oct 2007 - Mar 2012
Nov 2007

48000 mi

US $200
Mass air sensor problem. Audi paid for the part, I paid for the installation 
Dec 2007

48000 mi
Brake light came on again during hard high speed left turn. Originally a problem in August the dealer looked at it and said fluid low. Topped up fluid again problem has not reoccured 
Mar 2008

51000 mi

US $130
CV boot split and was replaced. 
Jun 2008

52000 mi
Door pocket flaps were broken on both front doors. Repaired by dealership at no cost 
Nov 2008

53000 mi

US $1700
Thermostat went so also replaced water pump, timing belt, serpentine belt, tension rollers, expansion tank which had cracked. 
Jan 2010

58000 mi

US $100
left front rubber front drive shaft boot replaced 
Jun 2010

59000 mi

US $1600
Right front CV boot replaced and seal on quattro differential to the rear of transmission. Noticed leaking oil. 
May 2011

65300 mi
Right front passenger window would not go up all the way. Lubricated tracks 
Dec 2011

67000 mi

US $500
Replacesd valve cover gasket which was leaking 

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2002 Audi A6 / S6 4dr Wagon

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

Audi A6 / S6 in Massachusetts, United States
Apr 2008 - Oct 2009
Jul 2008

89000 mi

US $1500
Catalytic converter 
Apr 2009

103000 mi

US $75
Brake light switch 
Jun 2009

105000 mi

US $85
Flasher relay 
Oct 2009

106000 mi
Back window washer was getting no water. 
Audi A6 / S6 in Minnesota, United States
Jun 2013 - May 2014
Dec 2013

105000 mi

US $500
Oil leak from head gaskets. 
Feb 2014

106000 mi

US $520
Oil leak from filler cap. Replaced Breather valve(PCV) and hoses. 
May 2014

109000 mi
Bunch of misfires. O2 sensor light came on and stayed on. 
Audi A6 / S6 in Washington, United States
Mar 2011 - Feb 2012
Oct 2011

110000 mi

US $1500
ABS Pump/Module failure and one wheel sensor. Parts replaced and warning code cleared. 
Audi A6 / S6 in Tennessee, United States
Sep 2010 - Mar 2011
Oct 2010

112000 mi

US $180
two vacuum leaks: one hose and a 'nipple' broken off manifold changeover valve. 
Nov 2010

113000 mi

US $200
Electrical connectors on timing sensors were broken and had to be replaced. I 'believe' this damage occured at another repair shop. Dealer had to order parts - 3 days - and fix. Previous repair shop repaid me half of repair. 

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2002 Audi A6 / S6 4dr Sedan

turbocharged 250hp 2.7L V6 6-speed manual AWD

Audi A6 / S6 in Massachusetts, United States
Feb 2008 - Mar 2010
Mar 2008

86000 mi

US $700
Torn CV boot. Had replaced opposite side 6 months ago, it was only a matter of time. Still waiting to see if clicking of CV's continue or if the boot was the only necessary repair. 
Sep 2008

91000 mi

US $300
CV joint needed to be replaced. Clicking in joint became excessive due to wear while boot was torn. Had to replace whole axle (half shaft) with joint and boot. Not cheap from the dealer. Also changed oil and filter while under the car and tightened susp. 
Audi A6 / S6 in Massachusetts, United States
Jan 2005 - Jun 2007
Nov 2005

55000 mi

US $650
I had the gas tank fixed as a leak between the fuel pump and the tank occured. The tank's flange for the fuel pump (a solid piece of the tank) cracked and the whole tank needed to be replaced. 
Oct 2006

69000 mi

US $820
I had the timing belt done wich included the water pump and all assosciated belts and kits. 
Mar 2007

73000 mi

US $250
Unfortunetly a wheel bearing went. Needed to repair the wheel bearing and potentially the brakes. Will update it when I complete the repair. 
Audi A6 / S6 in Maryland, United States
Feb 2010 - Jun 2018
May 2010

91000 mi

US $400
Check Engine Light for rich air/fuel mixture. Was caused by a faulty part and associated sensors. 
Sep 2010

94000 mi

US $250
The belly pan, aka the "sound deadening shield" (as Audi calls it) underneath the engine fell off while driving at low speeds and had to be replaced. Changed out tires and oil while car was at shop.  
May 2011

102000 mi

US $850
Developed exhaust leak behind (after) cats. Entire cat-back (pipes, resonator, mufflers) had to be replaced. 
Nov 2011

107800 mi

US $1700
Leaking brake system, required replacing master cylinder and both rear calipers. Both front CV boots were torn/leaking and fixed by replacing both front axles (including new CV boots). 
Jul 2012

116000 mi

US $750
ABS light was on due to faulty sensors and bad control module. Diagnostic completed and sensors replaced by shop, but control module will be replaced by owner (self) in the near future. 
Dec 2012

117000 mi

US $1300
Failed water pump replaced along with full timing belt job (timing belt and all related seals). 

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2002 Audi A6 / S6 4dr Sedan

turbocharged 250hp 2.7L V6 5-speed shiftable automatic AWD

Audi A6 / S6 in Texas, United States
- Feb 2009
May 2007

55000 mi

US $86
(DIY) broken seat belt latch necessitated replacement. 
Dec 2008

75250 mi

US $20
(DIY fix, parts only). Got "system too lean" codes and a check engine light, replaced numerous cracked and worn vacuum tubes around the engine. 
Feb 2009

75500 mi

US $100
$100 cost is for rebuilt parts only, since this was a DIY repair. The front/passenger CV boot disintegrated so I replaced the whole assembly. Looking into the cars history, the same position's boot failed at 40,000 miles. 
Audi A6 / S6 in Ontario, Canada
Oct 2014 - Jun 2017
Aug 2015

75000 mi
Shocks worn out replaced them and new sport springs 
Feb 2016

79980 mi

C $300
clock spring inside the steering wheel 
Mar 2016

80600 mi

C $90
Relay for the turn signals 
Apr 2016

81300 mi

C $600
Lower control arm bushings 
Jun 2016

83700 mi

C $400
Subframe bushings at the rear - caused the car to loose its control over the rear wheels ruined the tires as it took the alignment out dramatically. 
Nov 2016

88080 mi

C $200
Self level headlight control 
May 2017

94860 mi

C $2100
complete steering rack replaced - boots started filling and then leaking 
Audi A6 / S6 in Wyoming, United States
Sep 2010 - Mar 2011
Feb 2011

99000 mi
Have not fixed the light code. They are not moving like they should. We have not repaired yet because Audi dealership is 110 miles away. 
Audi A6 / S6 in California, United States
- Mar 2006
Jan 2005

50000 mi

US $1600
water pump repair 
Mar 2005

51500 mi

US $500
maf replacement 
Jan 2006

58000 mi

US $1600
water pump repair 
Mar 2006

61000 mi

US $500
maf replacement 
Audi A6 / S6 in California, United States
- Sep 2009
Jun 2006

55000 mi

US $800
Replaced leaking auxiliary (turbo) water pump 
Sep 2009

84000 mi

US $700
Replaced 2 oxygen sensors that caused "check engine" light. 
Audi A6 / S6 in Utah, United States
Nov 2013 - Mar 2015
Sep 2014

175000 mi

US $35
Replaced speed sensor and changed transmission fluid. 
Audi A6 / S6 in Pennsylvania, United States
Feb 2011 - Sep 2013
Mar 2011

111000 mi

US $300
Egt sensor replaced, air leak fixed Exhaust gas temperature sensor replaced, small vacum leak fixed 
Jun 2011

115000 mi

US $200
Clip broke off from one of the coolant lines, coolant leaked out everywhere, also had to replace thermostat (sensor) 
Nov 2011

116800 mi

US $1400
One of rollover nipples broke on gastank, had to replace gas tank. MAP sensor failed, bought online and replaced myself 
Audi A6 / S6 in Illinois, United States
Nov 2010 - Oct 2012
Feb 2011

43600 mi

US $1250
Blown block plug drivers side. Oil gushed out. Plug blown on exteremly cold day, car not allowed to warm sufficiently prior to driving 
Jan 2012

50000 mi

US $300
axle grommet 
Oct 2012

55000 mi

US $400
mass airflow meter 
Audi A6 / S6 in Florida, United States
Oct 2009 - Mar 2010
Dec 2009

81000 mi

US $488
Leaking cam seals. Brake booster hose replaced. 
Audi A6 / S6 in New York, United States
Mar 2009 - Feb 2011
Apr 2009

93000 mi

US $600
Auxillary water pump had to be replaced. Known problem on the 2.7t motors. Part costs 100 but the work to replace it was hefty. Quattroworld.com (EuroVWGTi) 
May 2009

94000 mi

US $300
One of the three 10mm bolts that hold the rear driver side timing belt cover, came loose. Little by little as it came out, it was shredding the timing belt. Half the belt was destroyed, while the cover rubbed on the rest of the belt. Belt almost broke. 
Audi A6 / S6 in Pennsylvania, United States
Aug 2009 - Aug 2011
Jun 2011

99000 mi
Replaced front right CV Joint and boot. 
Audi A6 / S6 in Washington, United States
Jan 2007 - Dec 2018
Dec 2007

67000 mi

US $235
Diagnosed as thermostat stuck open and small coolant leak from after-run pump. Quoted to include replacement of timing belt, water pump and other items pulled off during maintenance, but too rich for my blood today. After my spring bonus maybe... 
May 2008

70000 mi

US $950
After run coolant pump replaced. Replaced broken Alarm Sensor disable switch. 
Jul 2008

71000 mi

US $590
Main vacuum line was improperly reinstalled during last repair, which then broke while driving, resulting in rough idle and engine misfire. 
Dec 2008

79000 mi

US $1200
Both cats replaced due to faulty repair problem reported in July. CV Boot replaced Rear differential fluid leak - replaced seal and fluid. 
Mar 2010

97000 mi

US $1575
Replaced alternator and battery - complete electrical failure. 
Dec 2010

105000 mi

US $3300
Oil leaking from turbo seals 
Sep 2011

115000 mi

US $1345
Fixed leaky front differential Fan motor failed, fan was replaced 
Dec 2011

120000 mi

US $2950
Check engine light (Po741) came on at about 119,000. It was a malfunction in the torque converter. Replaced the unit - hard decision to make but I love the car. If not replaced, gas mileage would have stayed poor. 
Apr 2012

126000 mi

US $560
Gasket leak caused engine to misfire. replaced gasket, cleaned the oil from the cylinder and replaced 3 spark plugs. 
Jun 2012

129000 mi

US $1089
Car developed a whine in the drivetrain. Replaced CV boot on front left and wheel bearings on front right. 
Aug 2015

138000 mi

US $580
ABS and brake warning lights came on. First diagnosed as brake fluid pressure issue. Unit replaced - problem stayed. Eventually replaced the brake sensor - problem fixed. 
Feb 2016

139300 mi

US $1050
Replaced torn CV boot on front axle. 
Feb 2017

141000 mi

US $50
CIL on for a long time, asked to check it out. After 2 days to diagnose, smoke test found small leak in fuel tank vent. Requires tank removal to fix. More than value of car. Hope to reset CIL and pass emissions at next registration or byebye 
Audi A6 / S6 in Missouri, United States
Feb 2008 - Sep 2012
Mar 2008

79000 mi
Broken headlight washer valve resulting in leaking washer fluid. Must refill once a week. 
Mar 2009

95000 mi

US $1200
Washer nozzle assembly. Water pump, tensioner. 
Jun 2009

97000 mi

US $250
1 bank of coils (3 coils) went out. 
Jul 2011

122000 mi

US $1280
Aux water pump failed due to crack. Replaced pump. 
Jul 2012

135000 mi

US $800
Aux fan broken and needed repair. Aux fan control module needed replacement. 
Audi A6 / S6 in New Hampshire, United States
Dec 2008 - Oct 2015
Aug 2008

88000 mi

US $650
repair AC leak 
Nov 2009

98000 mi

US $2000
outer CV joint boots, right valve cover gasket,rear transfer case seal, Front brakes inc. rotors, service transmission, service final drive system. 
Oct 2010

111000 mi
They had to get the directionals fixed, not sure if it was bulbs or a flasher but it was very inexpensive. 
Jun 2012

129000 mi

US $210
replace rear axle seals 
Dec 2012

132000 mi

US $25
windshield wiper stems/shafts were seized the lubricant had dried up and hardened. Wiper mechanism was removed cleaned and relubricated 
Jun 2013

134000 mi

US $400
center muffler in the exhaust had corroded so the hangers failed. I replaced the center muffler 
Oct 2015

149000 mi

US $600
Water pump starting to leak. So I went ahead and had the full timing belt service done, which includes new water pumps 

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2002 Audi A6 / S6 4dr Sedan

300-horsepower 4.2L V8 5-speed shiftable automatic AWD

Audi A6 / S6 in Washington, United States
Apr 2008 - Apr 2015
Aug 2009

101000 mi

US $1000
Rear Caliper became defective. Torn Boot. Replaced both calipers as well as rotor and pads. 
Sep 2009

104000 mi

US $415
Intake Manifold - Free Up IMT Valve Shafts, replaced worn vacuum hoses Replaced leaking expansion tank 
Jun 2010

111000 mi

US $1000
replaced O2 sensors and purge valve. Changed oil also 
Nov 2010

116000 mi

US $600
Oil cooler seals and transfer pipe. Parts $105 Labor $495 
Feb 2011

119000 mi

US $225
Tie Rod with Rubber Dampening replaced right side. Excessive play in old tie rod, but not bad for 120K Miles 
May 2011

123000 mi

US $1600
Replaced Four Upper Control Arms with Ball Joint and Bushings. Aligned afterwards 
Aug 2011

127000 mi

US $1278
Coolant sensor defective. Caused minor starting problem associated with computer thinking the engine was overheated. 
Jun 2012

137000 mi

US $1320
Right and Left Outer Tie Rods were worn with significant play Replaced Serpentine Belt 
Dec 2013

154000 mi

US $1800
Replaced all upper arms (4 front - 2 rear) I took the Audi in to a local brake shop to have my brakes checked, knowing that I was getting close to needing replaced. The calipers on the rear had failed which was causing that annoying grinding sound. 
Jul 2014

158300 mi

US $330
Replaced bad Secondary Air Pump pipe 
Oct 2014

160200 mi

US $150
Transmission is toast. slipping gears. only solution is new transmission 
Apr 2015

161000 mi
Car sat all winter, then was sold with the transmission still slipping. 
Audi A6 / S6 in California, United States
Nov 2008 - Jan 2013
May 2010

104000 mi

US $624
replaced O2 sensor coolant container was cracked and replaced right front outer cv boot was cracked and replaced 
Jul 2010

107000 mi

US $1835
Thermostat failed - replaced tstat, water pump seeping - replaced timing belt, serpentine belt, water pump, 
Jan 2012

124000 mi

US $200
replaced seeping valve cover gaskets replaced turn signal relay 
Jan 2013

140000 mi

US $125
O2 sensor showed fault code. CEL went out and has not returned. 
Audi A6 / S6 in Washington, United States
Apr 2009 - Jun 2018
May 2009

66300 mi

US $653
Oxygen sensor replacement. Secondary Air Injection system failed 5 hours after a previous service. Shop "fixed" the problem, but it then came back.  I later troubleshot and fixed the problem myself. I gave the SAI system a good going over and found a vacuum line to the combi valves had become disconnected. Reconnected it and voila! No more error codes. Replace 2x front oxygen sensors. 
Oct 2012

93700 mi

US $550
Transmission fluid change. Driveshaft tail seal minor leak since March 2011, finally had it replaced. 
Oct 2015

105000 mi

US $985
Secondary air pump required replacement along with some associated vacuum lines. 
Apr 2018

115000 mi

US $1800
Coolant expansion tank cracked Replaced CV boots 
Audi A6 / S6 in Texas, United States
Aug 2010 - Dec 2015
Jun 2011

126000 mi

US $2000
Oil leak and small hole in oil pan. AC blower motor failed. Noisy power steering pump. Headlight switch nob broke. 
Jun 2013

150000 mi

US $350
Vacuum hose replaced to address check engine light. 

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2002 Audi A6 / S6 4dr Sedan

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

Audi A6 / S6 in Denmark
- Apr 2002
Apr 2002

105400 mi

$260000
a lot ! 

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2002 Audi A6 / S6 4dr Sedan

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

Audi A6 / S6 in Maine, United States
Jan 2007 - Jun 2018
Mar 2007

74000 mi

US $1000
Steering pump replacement Vacuum lines in engine and cooling system leak. 
Jun 2009

82000 mi

US $253
Check engine light was on. Left catalytic converter has a problem. 
Apr 2010

84000 mi

US $1400
Engine suddenly seemed to be missing a cylinder, replaced one ignition coil. Replaced O2 sensor after shop said computer analysis found that one was bad. 
Feb 2011

86000 mi

US $150
CV boot was split 
Feb 2013

98000 mi

US $1600
Also repaired left front CV boot (this one was broken - not preventive). 
Jan 2014

118500 mi

US $50
Air leak into suction hose of power assist unit, made wailing noises in cold weather. 
Sep 2015

117000 mi
Rear coils rusted out and to be replaced when part arrives next week. 
Oct 2015

117700 mi
replaced rear coils, don't remember how much it cost 
Mar 2016

124000 mi

US $800
Replace Valve cover gasket. Also replaced transmission fluid 
Dec 2016

130000 mi
Rear brake was rubbing, something was frozen. 
Jun 2017

131000 mi

US $2130
Broken cam gear. Replaced gear, timing and other belts, timing case housing and seals. 
Audi A6 / S6 in Illinois, United States
Jan 2013 - Dec 2013
Feb 2013

128000 mi

US $120
Oil Temperature Sensor / Oil Level Sensor in oil pan replaced. I no longer get the amber alert for the sensor, but my oil temp sensor no longer provides a temp reading. 
Jul 2013

132500 mi

US $300
All Wheel alignment that could not be corrected at regular tire shop. Sub-frame had to be adjusted for tru alignment.Discovered many other needed repairs that will be done LATER. Control arms, valve cover seals, motor mounts and snub. 
Oct 2013

135000 mi

US $2300
replaced all control arms, all tie-rods, front shocks,  motor mounts (3).  Valve cover seals. 
Dec 2013

135000 mi
No oil temp reading. 
Audi A6 / S6 in Oregon, United States
Sep 2016 - Oct 2016
Sep 2016

110000 mi

US $800
Emissions issues, air leaks. Attempted to repair by replacing air hoses but did not resolve. 
Audi A6 / S6 in Colorado, United States
Aug 2008 - Apr 2011
Dec 2008

58000 mi

US $3400
I had a vacuum leak in the brake system, 5 of 6 failing coil packs, and my lifters were damaged and rubbing. I got all this fixed along with my scheduled TB maintenance. 
Apr 2010

88000 mi

US $175
Coolant leak from a damaged hose. Hose replaced. 
Jan 2011

102000 mi

US $400
Replaced front left boot. 
Audi A6 / S6 in New York, United States
Jan 2016 - Jan 2016
Jan 2016

128000 mi

US $1600
MIL code came bad/malfunctioning TCM or torque converter. Total rebuild plus new torque converter 
Audi A6 / S6 in New Jersey, United States
Jul 2014 - Sep 2014
Jul 2014

83000 mi

US $367
Economy button would stay on climate control module and blow hot air. A/C system diagnostics . A/C high pressure switch with seal replaced system recharged and filled with dye leak detection fluid. Engine light was on. Engine scan code came up as minor leak. car had a after market eval purge valve. It was no good and replace withe OEM one. 
Aug 2014

83700 mi

US $111
Engine light on, Code read camshaft position sensor left side. 
Sep 2014

87000 mi

US $650
CEL came back on . After smoke test it was determined that fuel tank was cracked. Tank replaced 
Audi A6 / S6 in Minnesota, United States
Jan 2007 - Jun 2018
Oct 2008

72000 mi

US $540
CV Joints (both) were shot and had to be replaced. 
Sep 2012

99000 mi

US $212
Engine temp sensor leak (coolant leak) 
Mar 2013

102000 mi
Check engine light reset, pre-cat converter fault 
Aug 2013

104000 mi
Check engine, suspect catalytic converters, reset check engine 
Oct 2013

105000 mi

US $2010
Catalytic Converter replaced (both) 
Feb 2015

111000 mi

US $171
Coolant temp sensor orang leak. 
Apr 2015

112200 mi

US $1100
Water pump went out, pushed into timing belt, replaced pump, idlers and timing belt 
Nov 2015

114000 mi
replaced passenger side CV Joint/boot 
Feb 2016

114000 mi

US $420
Serpentine belt tensioner failed, had to replace tensioner and belt. 
Aug 2016

116300 mi

US $890
Replaced windshield washer fluid tank and hoses. replaced driver side headlight height adjustment control arm. was squeaking when going over bumps. 
Audi A6 / S6 in California, United States
Feb 2008 - Mar 2010
Aug 2008

56000 mi

US $500
Had to replace outer CV boots, as they had cracked and were leaking grease. Apparently this is a common problem for A6 owners. 
Mar 2009

63000 mi

US $100
Thermostat failed in the locked position, causing the vehicle to overheat. Head gasket may be damaged. 
Jun 2009

65000 mi

US $100
Ignition coil failure, car ran REALLLLY rough. New coil installed on cyl #5 and ran smoothly. STILL have a weird smell going on... 
Audi A6 / S6 in Oregon, United States
Dec 2011 - Jun 2013
Feb 2012

58400 mi

US $397
warning light came on, replaced the thermostat. warning light came on again, replaced the sensor 
Oct 2012

63500 mi

US $3200
engine oil leak that required pulling the timing belt cover and housing. replaced timing belt, required at 10 years anyway. broken engine mount and core support mount. 
Audi A6 / S6 in Florida, United States
May 2009 - Jun 2011
Jun 2009

58648 mi
Purchased car. During test drive, the "oil" light came on. Turned out to be faulty sensor - obviously dealer covered - believe it was $29. I replaced oil, filter, gear oil & spark plugs for $115 (synthetic oils) to give myself solid baseline. 
Sep 2009

61000 mi

US $220
Replaced tranny snub mount (shot)  Broke a 4" rubber power steering line in process & replaced/flushed that too. Trans range sensor was faulty. "17090 - trans range sensor (f125): Implausible signal P0706 - 003 - mech failure - intermittent - MIL on" was my code. $220 part AND pain to replace!! I created writeup on Audiforums.com - check DIY section. 
Audi A6 / S6 in Virginia, United States
Feb 2010 - Jul 2017
Apr 2010

90500 mi

US $150
Check engine light on for about a week-code p1296 then started overheating. Dealer advised to replace waterpump, timing belt, etc for $1800. Towed to independent garage--said it was the coolant temp sensor, they fixed for $150 including the tow. 
Aug 2010

93000 mi

US $1000
Replace defective oxygen sensors Replace front axle 
Sep 2011

103000 mi

US $783
Water pump failure. Replaced water pump and timing belt.  Also replaced front engine mount during repair. 
May 2012

109100 mi

US $128
Replace ignition coil 
Sep 2012

112000 mi

US $300
Replace rear wheel hub bearing 
Sep 2014

133000 mi

US $1900
Car jumped into neutral while driving, safe mode. Transaxle & Transfer Case replaced. 
Apr 2015

139500 mi

US $198
Replaced front drive axle 
Audi A6 / S6 in Massachusetts, United States
Jun 2009 - Sep 2012
Sep 2009

226000 mi

US $160
car not firing on all cylinders, turned out to be a faulty coil. Replaced coil and solved problem 
Nov 2009

228000 mi

US $1100
Radiator leaked, car overheated, towed to shop and radiator replaced. While at shop check engine light on, cat codes - replaced mass air sensor.  Then another coil needed replacing. Passed inspection, got sticker. Also got recall for faulty coils. 
Jan 2010

231000 mi

US $350
belt tensioner let go, belt no longer attached. Replaced belt and belt tensioner 
Jul 2010

235300 mi

US $110
oil level sensor failed - display came on noting sensor failure. Part replaced 
Jan 2011

232800 mi

US $420
check engine light; camshaft sensor faulty catalytic converters bad, cat cnvrtr still bad Coolant leaking. Coolant tank replaced, coolant leak shorted out camshaft sensor.  Exhaust pipes leaked, welded on new pipes. 
Mar 2011

247000 mi

US $2200
Replaced catalytic converters, check engine light now off, car runs great. 
Sep 2012

259000 mi
water pump let go; last replaced at 205,000 miles. Will not make the repair due to cost - traded car in on another vehicle. 
Audi A6 / S6 in Florida, United States
Mar 2009 - Apr 2013
Nov 2009

113000 mi

US $80
Ignition coil replaced less than a hundred miles after the timing belt repair.  
Feb 2010

120700 mi

US $250
replaced the 5 other ignition coils because of continued problems. Also put in a K&N air filter 
Jul 2010

134700 mi
Blinkers have stopped working. Relay is suspected although hazards still work. Update: fixed soon after. 
Audi A6 / S6 in Oregon, United States
Dec 2010 - Apr 2013
Oct 2012

169000 mi

US $350
replaced CV joint boot. 
Apr 2013

175000 mi
Radiator leak. did not fix. 
Audi A6 / S6 in Virginia, United States
Nov 2009 - Nov 2013
Jan 2010

104000 mi

US $1000
Replaced plugs and coils. mechanic said valve cover gaskets leaking and made sense to go ahead and repair even though may not have been that much of an issue at this point. Probably would have gotten worse if not corrected? 
Jun 2012

100000 mi

US $1500
Thrust and control arms in front 
Oct 2012

102500 mi

US $200
CV boot torn 
Apr 2013

117700 mi

US $220
Replace torn cv boot 
May 2013

119000 mi

US $520
Ignition housing broke where key is inserted. Car would not start and had to be towed to repair shop. 
Oct 2013

124000 mi

US $657
Misfiring badly. Needed new crankcase ventilation valve and plugs. Still runs a little rough at idle, but no codes! 
Nov 2013

124000 mi
Misfire returned a few weeks later. Mechanic suggested ditching it. 
Audi A6 / S6 in Pennsylvania, United States
Aug 2008 - Mar 2010
Aug 2009

105000 mi

US $500
Passenger side axle replacement While on the rack for the axle repair, our (dependable, trusted) mechanic noticed our center differential seal leaking. We replaced seal, all 3 diffs fluids, transmission filter and new trans fluid. Mechanic damaged exhaust flex joint. Cut out and soldered new one in its place. I paid for the flex joint, and he comped me the labor. 
Audi A6 / S6 in North Carolina, United States
Aug 2006 - Sep 2016
May 2006

37000 mi
Passenger side valve cover Gasket replaced under CPO 
Jul 2006

41000 mi

US $75
Replaced all spark plugs (self) 
Aug 2006

42000 mi

US $59
Drained and flushed complete Brake system. 
Sep 2006

42000 mi

US $110
Drained and flushed complete brake system by dealer including flushing the ABS module, to improve brake pedal modulation. 
Feb 2007

52000 mi

US $135
Both front CV boots torn, replaced by Audi of America under good will, I paid $135, dealer and AOA covered the rest. 
Jun 2007

56000 mi

US $50
Pulley seized causing water pump to blow. Water pump, timing belt and all related items covered under CPO. 
Aug 2007

59000 mi

US $50
A/C blower fan replaced under CPO. 
Sep 2008

65000 mi
Cat Replaced by Dealer under warranty 
Oct 2008

65500 mi

US $46
Drained and flushed power steering fluid 
Nov 2008

67000 mi

US $75
Cat replaced 
Feb 2010

79000 mi

US $775
- Belt tensioner - Hazard switch - Window regulator 
Mar 2011

93000 mi

US $157
Camshaft damaged by a loose spring on driver side. Total damage $3290, warranty covered repair. 
Aug 2011

98000 mi

US $377
Brake booster repair Engine mounts Cam positioning sensor Purge valve clogged 
Audi A6 / S6 in Tennessee, United States
Feb 2010 - Aug 2010
Aug 2010

86000 mi
driveshaft seal leaking bad left cat 

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2002 Audi A6 / S6 4-door

8-cylinder automatic AWD

Audi A6 / S6 in California, United States
Jan 2007 - Mar 2010
May 2007

48000 mi

US $160
DS outer CV boot leak... replace. 
Oct 2007

50000 mi

US $195
Expansion coolant tank cracked and coolant leaked. 

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2002 Audi A6 / S6 4-door

10-cylinder automatic AWD

Audi A6 / S6 in Nevada, United States
Feb 2007 - Mar 2010
Jun 2007

64000 mi

US $300
Knock sensor and Air pump for secondary air went out. I buy parts wholesale so the dollar value is low. 
Feb 2008

74000 mi

US $300
Replaced upper control arms due to vibration. 

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2001.5 Audi A6 / S6

Engine not specified

Audi A6 / S6 in Texas, United States
Apr 2012 - May 2012
May 2012

185000 mi

US $1000
Fuel Pump went out and needed to be replace or car will not start. 

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2001.5 Audi A6 / S6 4dr Sedan

turbocharged 250hp 2.7L V6 6-speed manual AWD

Audi A6 / S6 in Connecticut, United States
Aug 2008 - Mar 2010
Sep 2008

73000 mi

US $700
Upper and lower control arms. 
Mar 2009

78000 mi

US $600
Secondary water pump. LCD in cluster. Torn boot on turbo duct. 
Jun 2009

81000 mi

US $350
Failed Bank 1 EGT sensor 

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

2002 Audi A6 / S6 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 2002 Audi A6 / S6 problems occur, check out our car reliability stats.

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