2015 Audi S8 Engine Problems
- Complaints
- 5about this part
- Share
- 83%of 6 total for the year
- Median mileage
- 50,400miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the engine of the 2015 Audi S8, 83% of the 6 complaints for this model year. Where a mileage was given, the median is 50,400 miles.
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.
“I was driving at highway speed when the engine suddenly started to shudder and lose power. The check engine light immediately started to flash and the engine stalled. I was stopped in a busy highway during rush hour. I eventually got the car to a safe location and pulled the turbo air intake to inspect the turbo with a borescope. The bank 1 turbo had damaged itself. This should not happen on a car with only 50,000 miles.”
NHTSA complaint #11092001, filed 2018-05, 50,000 miles“Was driving on a saturday afternoon down a busy street when my car started sputtering and had very reduced power. I was able to eventually get to the side of the road and shut the car off. Tried starting the car after a resting period and car would not start. Let it sit longer and finally got it to start but car had very little power when pressing on the gas , but I was able to get to my local Audi dealer for a diagnosis. ($190.00 + tax). I informed the technician of the issues I saw and also that I heard a whining noise coming from the engine. …”
NHTSA complaint #11399435, filed 2021-03, 50,800 miles“Only 43,750 miles and the engine is being completely rebuilt. New cam adjusters, new timing chain tensioners, new timing chain guides... This shouldn't happen on a car with such few miles.”
NHTSA complaint #11217347, filed 2019-06, 43,750 miles“The contact owns a 2015 Audi S8. The contact stated he was unable to start the vehicle. The contact stated that the Electronic Power Control (EPC) warning light was illuminated. The contact was able to start the vehicle, but the vehicle was shaking while driving. The contact also stated the vehicle had stalled. The contact took the vehicle to an independent mechanic and was informed that the oxygen sensor and oil pressure switch needed to be replaced. The vehicle was repaired but continued to experience the failure. …”
NHTSA complaint #11506565, filed 2023-02, 116,000 miles“Turbo failure and positive crankcase ventilation (PCV) failure. Whining noise from PCV and smoke out the tail pipes with no power. Had to pay out of pocket to remedy issues.”
NHTSA complaint #11452668, filed 2022-02Related 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 S8
← All problems reported for the 2015 Audi S8
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 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