| 1 | 0 | 3 | 4 | 3 | 4 |
2008 Audi A6 / S6 / RS6 repairs by problem area
Engine (36%)
Transmission and Drivetrain (2%)
Brakes and Traction Control (8%)
Suspension and Steering (10%)
Electrical and Air Conditioning (37%)
Paint, Rust, Leaks, Rattles, and Trim (3%)
Other (3%)
Chart based on 91 repairs.
2008 Audi A6 / S6 / RS6 engine repair cost distribution
$2500+ (7%)
$1000 - $2499 (17%)
$500 - $999 (10%)
$100 - $499 (21%)
< $100 (45%)
Chart based on 29 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2008 Audi A6 / S6 / RS6
Engine not specified
| 73000 mi US $85 |
valves needed flushing |
2008 Audi A6 / S6 / RS6 4dr Sedan
435-horsepower 5.2L V10 6-speed shiftable automatic AWD
| 48000 mi US $1700 |
CEL for misfire. Due to excessive carbon buildup, had to replace oil separator, all 10 fuel injectors, all spark plugs. After initial repair, starter failed adding another 20 hours of labor. Carbon cleaning on upper. CELs continue. |
| 50000 mi US $320 |
Right bank catalytic converter was bad. Oxygen sensor was also bad. |
| 53000 mi US $1200 |
Both EGR valves and associated equipment failed, making engine run rich with a heavy gasoline smell. Took into shop because CEL was on and the EGR valve tubes had started to melt and smoke. |
| 58300 mi US $1100 |
Left bank catalytic converter O2 sensor failed, and was replaced. |
2008 Audi A6 / S6 / RS6 4dr Sedan
350-horsepower 4.2L V8 6-speed shiftable automatic AWD
| 117000 mi US $1200 |
Oil leak around the oil filter attachment point. Also, had to de-carbonize the intake manifold. |
| 95000 mi US $395 |
Remove and replace main seal. |
| 107200 mi US $100 |
I had a consistent oil leak that turned out to be the rear seal. |
| 111000 mi US $2900 |
Replace intake manifold |
2008 Audi A6 / S6 / RS6 4dr Sedan
255-horsepower 3.1L V6 7-speed shiftable CVT FWD
| 50000 mi | For the second time since purchasing the A6 new, the water pump failed. Dealer has admitted that Audi installed water pumps on A6's with incorrect housings. A day after picking car up after failed water pump replacement the malfunction light came on and the car would not run. Fuel thrust module failed. |
2008 Audi A6 / S6 / RS6 4dr Sedan
255-horsepower 3.1L V6 6-speed shiftable automatic AWD
| 77000 mi | ECU fail. Replacement needed. $6,000 |
| 35000 mi | Engine was performing sporadically, then engine light began flashing. I took it in and Dealer identified it as misfire and carbon covered pistons. They cleaned fuel system and pistons. Unfortunately, I was back within just over a week. Updated and recalibrated engine software, cleaned pistons, added fuel cleaner. Has not been a problem since. |
| 52700 mi | Check oil level light went off last week. Had it checked and there were no issues. |
| 41100 mi | Misfires detected, was fixed with a software update found in a TSB by dealer. |
| 12089 mi | Engine malfunction (i.e., check engine) light came on. There was a Technical Bulletin (# 24N1) on the vehicle which indicated a computer software upgrade was needed. Dealer installed the software upgrade. This seemed to resolve the check engine light. |
| 48000 mi | CEL on, because of common carbon build-up on intake valves issue. Dealer has cleaned heads previously. This time just software update, which likely just made sensors less sensitive. |
| 104300 mi US $144 |
MIL light came on. Codes P2070 and P2006 were reported. Mechanic diagnosed problem as a leaking vacuum hose. Repair costs of $144 consisted of $132 for labor (diagnosis and repair) and $12 for the vacuum hose. |
| 115500 mi US $350 |
After having the 115K service performed by an independent Audi mechanic, the ESP, EPC, and CEL (blinking) lights became illuminated on the drive back home. I returned to the independent Audi repair shop. The owner of the Audi shop (an Audi expert) checked the car out. He did not find any reason for the ESP, EPC, and CEL fault. However, he suggested that the ignition coils be replaced. The ignition coils were replaced at cost with no labor charge as a courtesy for the inconvenience of having to return to the shop After having the ignition coils replaced by the independent Audi mechanic, the EPC, EPS, and CEL (blinking) lights came back on the way back home. The vehicle was then taken to the Audi deal for analysis of the codes. The dealer kept the vehicle for several days, but could not any reason for the codes. I was charged $300. This was essentially, a $100 charge to troubleshoot each code separately. Although I explained that the warning lights all came on at the same time, the service adviser indicated that they needed to troubleshoot each code separately. Later, the service adviser claimed that the time that the mechanic spent trying to diagnose the problem was easily double the amount that I paid. The car was returned to me without the mechanic at the dealer finding any problem. The codes were reset by the mechanic and did not occur again while the car was at the dealership. |
| 115474 mi US $2540 |
EPC, ESP, and CEL (blinking) lights became illuminated again. Car was towed to the independent Audi repair shop. Audi mechanic diagnosed the problem as the infamous Audi carbon build-up issue in the 3.0 V6 TSI engine. The left and right intake manifolds were replaced and a carbon cleanup was performed. Water pump was replaced at this time as a precaution. |
| 117701 mi US $1883 |
Replaced leaking valve cover gaskets Replaced coolant hose Replaced vacuum pump |
| 64200 mi | check engine light stayed on. piece that had to be removed to change the headlight was broken. |
| 85800 mi US $590 |
cylinder coil replaced |
| 120000 mi US $650 |
repair oil leak |
| 8000 mi | Engine light came out. Dealer stated that "software needed to be upgraded". Diagnostics showed that cylinder 6 was "misfiring". |
| 25000 mi | Rough idle on cold starts. Eng check light and off many times. |
| 45000 mi | Idler pulley replaced. Water pump replaced. |
| 91000 mi US $600 |
Replaced left timing cover seal to repair oil leak |
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