2015 Audi S6 Engine Problems
- Complaints
- 3about this part
- Share
- 60%of 5 total for the year
- Median mileage
- 69,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the engine of the 2015 Audi S6, 60% of the 5 complaints for this model year. Where a mileage was given, the median is 69,500 miles. 1 of these say a crash was involved, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Driving on the new jersey turnpike and both turbochargers failed. Car lost power and I had to steer to side of the highway without power steering and brakes from far left lane. Audi service says bearings starved of oil and seized. They said this is a common problem with the 4.0 twin turbo Audi engines and that the oil feed line gets blocked and starves the turbochargers of oil, resulting in bearing failure. Repair cost is $9,000. Car has less than 70,000 miles. Audi has a technical service bulletin on file with the NHTSA that specifically addresses this known problem. …”
NHTSA complaint #11404426, filed 2021-03, 69,500 milesRelated service bulletins
- 11034657Jun 26, 2026This bulletin provides information when there is increased oil consumption; >0.5ltr/1000 km.
- 11034728Jun 10, 2026This bulletin provides informaiton when the engine is not running smoothly, misfiring.
- 11029368Feb 20, 2026This bulletin provides information on the use of the Audi frequencly analysis app, and where the application can be downloaded.
- 11029367Feb 20, 2026This bulletin provides information on VIN Plates, Safety Certification labels, and the ordering procedures.
- 11028398Jan 14, 2026This bulletin provides information regarding UV leak additive for finding oil leaks.
- 11027356Dec 11, 2025This bulletin provides information when there is increased oil consumption; >0.5ltr/1000 km.
- 11016532Mar 12, 2025This bulletin provides informatin when the engine does not run smoothly at idling speeds.
- 11012476Dec 5, 2024This bulletin provides information when the MIL is on; DTCs for misfire, air/fuel ratio imbalance, or lean fuel system stored in the ECM P030000.
- 11009928Oct 8, 2024This bulletin provides informatin when the engine does not run smoothly at idling speeds.
- 11009327Sep 24, 2024This bulletin provides information when ther is an Engine: start/stop system fault shown and start/stop system not is working; mileage below 50 km/32 miles.
Engine: other model years
Other parts of the 2015 Audi S6
1 complaintsFuel system
1 complaintsOther or unknown
1 complaintsSteering
1 complaintsSuspension
1 complaints
← All problems reported for the 2015 Audi S6
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology