2015 Audi S8 problems, complaints & recalls
Most-reported problem areas: Engine (5) · Power Train (1)
Safety recalls (4)
Engine And Engine Cooling:engine:gasoline:turbo/Supercharger 2022-03-23 · campaign 22V178000 · 26,093 vehicles
Defect: Volkswagen Group of America, Inc. (Audi) is recalling certain 2013-2017 A8, S6 Sedan, S7, S8, and 2014-2017 RS7 vehicles. The turbocharger oil supply strainer can become blocked, causing wear to the bearings due to lack of lubrication.
Risk: Worn bearings can cause the turbine wheel to contact the turbocharger housing or cause the shaft to break, causing an engine stall and increasing the risk of a crash.
Fix: Dealers will replace the oil strainer and perform an oil change, free of charge. Owner notification letters were mailed August 4, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 21H7.
Structure:body:hood 2020-07-07 · campaign 20V397000 · 12,964 vehicles
Defect: Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2018 Audi S8 and A8 vehicles. The seal around the engine compartment may come loose and contact hot engine components.
Risk: If the seal contacts hot engine components, there could be an increased risk of a fire.
Fix: Audi will notify owners, and dealers will install a retaining plate to prevent the engine compartment seal from loosening. The recall began September 4, 2020. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 51G6.
Fuel System, Gasoline:delivery:hoses, Lines/Piping, And Fittings 2019-01-28 · campaign 19V057000 · 8,985 vehicles
Defect: Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2016 Audi A8 and S8 vehicles. The fuel supply line for the high pressure fuel pump may become porous and leak fuel.
Risk: Leaking fuel, in the presence of an ignition source, increases the risk of fire.
Fix: Audi has notified owners, and dealers will install a fuel pressure damper, free of charge. The recall began February 21, 2019. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 20BM.
Fuel System, Gasoline:delivery:hoses, Lines/Piping, And Fittings 2018-06-25 · campaign 18V430000 · 6,633 vehicles
Defect: Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2013-2015 Audi S8 and A8 vehicles. The fuel supply line for the high pressure fuel pump may become porous over time, resulting in a fuel leak.
Risk: A fuel leak in the presence of an ignition source can increase the risk of a fire.
Fix: Audi will notify owners, and dealers will replace the fuel line, free of charge. The recall began July 20, 2018. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 20AV.
Service bulletins (690)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Unknown Or Other 2026-09-25 · TSB_2083409_1 · Service Bulletin/Repair Instructions
this bulletin states that technicians are required to report to the manufacturer when a vehicle has flooded, and specify the height to which the vehicle has been flooded.
Unknown Or Other 2026-09-25 · TSB_2052680_2 · Service Bulletin/Repair Instructions
this bulletin provides information for reporting safety related information to the manufacturer.
Steering 2026-09-22 · TSB_2074846_5 · Service Bulletin/Repair Instructions
this bulletin provides information about vibrations and rotational steering vibrations.
Visibility/Wiper 2026-09-22 · TSB_2020552_15 · Service Bulletin/Repair Instructions
this bulletin provides service information regarding exterior glass cleaning.
Unknown Or Other 2026-09-15 · TSB_2030471_9 · Service Bulletin/Repair Instructions
this bulletin provides information when the license plate mounting bracket threded inserts are stripped.
Structure:body 2026-09-08 · TSB_2068999_5 · Service Bulletin/Repair Instructions
this tsb describes a corrosion issue due to outside influence and the prohibition of warranty in these cases.
Showing the 6 most recent of 690 bulletins. Search all of them free at nhtsa.gov.
What owners report
2024-03-20 · Power Train“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,…”
2023-02-10 · Engine · 116,000 mi“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 in…”
2022-02-18 · Engine“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. …”
2021-03-05 · Engine · 50,800 mi“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 …”
2019-06-02 · Engine · 43,750 mi“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.…”
2018-05-04 · Engine · 50,000 mi“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 tur…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.