2015 Audi S8 Transmission and drivetrain Problems
- Complaints
- 1about this part
- Share
- 17%of 6 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the transmission and drivetrain of the 2015 Audi S8, 17% of the 6 complaints for this model year.
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.
“Water Pump and thermostat has a faulty design that causes coolant to leak either around the O Ring and/or the elbow. I am in my third water pump and thermostat with only 69,000 miles on the vehicle. Issue appears to be common on the EA824 (4.0 twin turbo) engine with hundreds of reports from the complete range of EA824 equipped vehicles (S8, RS7, S6, S7, A8 etc). Average mileage of those reported are 65k miles or so. Hundreds of similar issues are reported via various Audi forums and social media groups. Poses a fire risk since coolant leaks all over the front of the engine. …”
NHTSA complaint #11578521, filed 2024-03Related service bulletins
- 11034708Jun 23, 2026Ths bulletin provides informaiotn when the gearbox warning lamp is on, DTC P060A00 (8693) in gearbox control unit; 0BK and 0BL gearbox.
- 11034638Jun 23, 2026This bulletin provides informaiton when the transmission warning message appears in the cluster; P074100 stored in the TCM.
- 11034707Jun 22, 2026Ths bulletin provides informaiotn when the gearbox warning lamp is on, DTC P060A00 (8693) in gearbox control unit; 0BK and 0BL gearbox.
- 11034705Jun 22, 2026This bulletin provides informaiton when there is a leak on the oil hole between the planetary and the transfer box.
- 11033475May 6, 2026The high-voltage batteries in electric vehicles are subject to various ageing effects which could lead to the energy content (energy density) being reduced. This reduction in the…
- 11027358Dec 11, 2025This bulletin provides additoinal information to assist in determining the energy content of lithium-ion high-voltage batteries.
- 11020353Jun 20, 2025This bulletin provides information when there are noises/vibrations in tight bends; Q7 and A8 models.
- 11009937Oct 4, 2024This bulletin provides additional information pertaining to continued noises/vibrations in tight bends - Q7 and A8 vehicle models.
- 11007311Aug 30, 2024This bulletin provides information when there are noises/vibrations in tight bends; Q7 and A8 models.
- 11007230Aug 30, 2024This bulletin provides information when there are noises/vibrations in tight bends; Q7 and A8 models.
Transmission and drivetrain: 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 29, 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