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Audi A6 / S6 Problems and Repair Histories

1000 TrueDelta members own a 2000 or newer Audi A6 / S6. 454 of these members (45.4%) have reported repairs for their car. A total of 1493 repairs to Audi A6 / S6s--an average of 1.5 per vehicle--have been reported.

See our lemon odds and nada odds page for more details. To see how frequently Audi A6 / S6 problems occur, check out our car reliability stats.

Want to read about specific problems behind these stats? Jump to the Audi A6 / S6 problem descriptions below.

Don't infer Audi A6 / S6 problem frequency from what you see on this page. Many lucky owners have had no repairs, and their cars are not shown.

Percentage of Audi A6 / S6 repairs by problem area

40% of the Audi A6 / S6 repairs were to the engine, 12% to the transmission, 8% to the brakes, 13% to the suspension, 19% to the electrical or air-conditioning systems, 4% to the body and trim, and 5% to other areas of the vehicle.

Chart based on 1493 repairs.

Audi A6 / S6 repair cost distribution

Of the Audi A6 / S6 repairs that were not covered by warranty and were not do-it-yourself repairs, 7% cost less than $100, 37% between $100 and $499, 25% between $500 and $999, 23% between $1000 and $2499, and 8% more than $2500.

Chart based on 666 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 Audi A6 / S6 problems and repair histories. Log in or join us to see them all.
Repair costs are in local units.

2002 Audi A6 / S6 4dr Wagon

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

Audi A6 / S6 in New Jersey, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Jan 2007 47000    
48000 50 Heated seat element replacement. Audi does nto provide the total cost, but it was large. I paid only $50 deductible 
49000 265 Torn CV boot replaced. Driveable but would have resulted in permanent damage to joint. 
50000 0 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 
53000 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. 
67000 150 clamps and tubing connecting cats to mufflers rusted away and was replaced with new. 
68000 300 Sun visor broke, Had to be replaced, as well as securing clip. 
70000 40 coolant temp sensor failed. I ordered parts, antifreeze, and did the job myself. 1+ hours work ( reported at zero cost) + $40 total parts. 
72000 511 right front wheel bearing making significant noise 
80700 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. 
90000  

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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
Date Odometer
(in miles)
Cost Problem/Repair Description
Jan 2007 73000    
74000 1000 Steering pump replacement Vacuum lines in engine and cooling system leak. Brake pads and rotors. 
82000 253 Check engine light was on. Left catalytic converter has a problem. 
84000 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. 
86000 150 CV boot was split 
98000 1600 Also repaired left front CV boot (this one was broken - not preventive). 
105300 50 Air leak into suction hose of power assist unit, made wailing noises in cold weather. 
106000  

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2002 Audi A6 / S6 4-door

8-cylinder automatic AWD

Audi A6 / S6 in California, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Jan 2007 46000    
48000 160 DS outer CV boot leak... replace. 
50000 195 Expansion coolant tank cracked and coolant leaked. 
 

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2001 Audi A6 4dr Wagon

200-horsepower 2.8L V6 5-speed shiftable automatic AWD

Audi A6 in Maine, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Jan 2007 81000    
85000 2000 Steering rack developed fluid leak and needed to be replaced, as did steering sensor. Torn CV boot needed to be replaced. 
95000 0 Found and replaced broken coolant jug during routine timing belt/water pump replacement. 
108000 250 Valve gaskets were leaking, dripping oil onto manifold. 
113000 1536 Replace Air Bag control module  
114000 419 Transmission output seal was leaking. 
128000 200 Power window not working properly and door not closing properly 
134000 560 Replace strut assembly 
134500 359 cam tensioner gasket and valve cover gasket to fix oil leak 
142300 200 rusty muffler 
157000 900 Coils rusted out 
157000  

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2001 Audi A6 / S6 4-door

turbocharged 6-cylinder automatic AWD

Audi in California, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Jan 2007 46000    
47000 0 Replaced am antenna amplifier wire. 
47000 3800 coolant tank replacement 
53000 6 Replace broken window guide; driver's side. 
56000 218 Bad EGT sensor driver's side. 
 

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2001 Audi A6 / S6 4-door

8-cylinder automatic AWD

Audi A6 / S6 in Maryland, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Jan 2007 57000    
60000 450 Replaced worn CV Boot  Replaced engine oil gasket that was leaking 
70000 500 Computer threw fault codes for Mass Air Flow Sensor and Catalytic converter. Mechanic recommended Mass Air Flow Sensor replacement only, as Catalytic Converter faults can sometimes be caused by Mass Air Flow Sensor. Appx 1wk has since passed w/o faults. 
 

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2001 Audi A6 / S6 4-door

6-cylinder automatic AWD

Audi A6 / S6 in New York, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Jan 2007 76000    
78000 50 Climate control not accurate in heat mode. Temp in the cabin would decrease while the temp setting had to be continuously increased. Thermostat replaced. 
 
Audi A6 / S6 in Virginia, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Jan 2007 75000    
81000 600 Auxiliary (passenger side) fan stopped working: replaced fan and fan control module ABS warning light on: repaired ABS control module 
82000 2 Windshield washer tank leaked and drained dry... 2 grommets at pump mount had dried out and were replaced. 
83000 110 Check Engine Light: Indicated issue with Evap. Control System - no problem found. Indicated secondary issue with Oxygen sensor, checked & monitored in "real time" and no issue found. Reset light, it has not come back on in ~3 weeks since. 
88000 0 catastrophic engine failure, cam timing lost, valves broken, pistons damaged, extensive damage still under analysis for extent of repair 
88000 4100 Catastrophic engine failure: "dropped" a valve, resulting in multiple valves breaking, pistons holed, timing belt pulley bolt sheared, cam timing lost, etc. Repair consisted of replacing engine with a rebuilt engine (Long block). 
88000 0 "Low Coolant" light came on after engine replacement (100-200 miles). Checked engine, found no leaks at all, assume that all air was not bled from system. Re-bled system, no leaks found, coolant topped off. 
89000 0 "Low Coolant" light came on after engine replacement (800 miles). Checked engine, found no leaks at all, bled system. Re-bled system, no leaks found, coolant topped off. Continue to monitor coolant loss so source can be determined. 
91000 930 LF Upper Control Arm/ Ball Joint replaced Hood latch cable broke, hood could not be opened... replaced hood latch Check Engine Light on: fully test system, replace purge valve & retest. 
102000 799 Replaced 2 Oxygen Sensors which were giving Check Engine Light 
102000 1000 Catalytic converter replaced. Flex pipe gave out. Sold car, not willing to keep putting huge $$$ into a car I couldn't rely on and that might not pass emissions inspection next time. Intermittent CELs turned into constant ones and even my trusted expert indep. shop was scratching their head at it. 

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