Most common 2015 Audi A8 problems
Share of the 31 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Audi A8 complaints by model year
Best A8 years: 2018, 2022, 2009. Years to avoid: 2013, 2015, 2019, 2014, 2004. Compare all years →
2015 Audi A8 recalls (5)
Engine and engine cooling › Engine › Gasoline › Turbo/supercharger
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.
Remedy: 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.
Structure › Body › Hood
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.
Remedy: 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.
Fuel system, gasoline › Delivery › Hoses, lines/piping, and fittings
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.
Remedy: 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.
Fuel system, gasoline › Fuel injection system › Fuel rail
Volkswagen Group of America, Inc. (Audi) is recalling certain 2016-2018 Q7, A6 and A7 vehicles, and 2015-2018 Audi A8 vehicles. The left and right fuel rails may leak fuel.
Remedy: Audi has notified owners, and dealers will replace the left and right fuel rail, free of charge. The recall began February 28, 2019. Owners may contact Audi customer service at 1-800-253-2834.
Fuel system, gasoline › Delivery › Hoses, lines/piping, and fittings
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.
Remedy: 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.
NHTSA defect investigations
Federal safety investigators have looked into 2 possible defects involving the 2015 Audi A8:
Engine Stall - Turbo Failure
On March 29, 2021, the Office of Defects Investigation (ODI) opened Preliminary Evaluation (PE) 21-009 after the agency received 58 reports alleging engine stalling in 2013-2016MY Audi vehicle models A8, S6, S7, S8 & RS7. The subject vehicles are equipped with 4.0L, twin-turbocharged engine. Complainants reported that the vehicles stall suddenly with no warning while driving on the highway or in city traffic.
Engine Stall - Turbo Failure
On March 29, 2021, the Office of Defects Investigation (ODI) opened a Preliminary Evaluation (PE 21-009) after the agency received 58 reports alleging engine stalling in 2013-2016MY Audi vehicle models A8, S6, S7, S8 & RS7 equipped with the 4.0L, twin-turbocharged engine. Complainants reported the vehicles would stall with no warning while driving at highway or city traffic speeds.
What 2015 Audi A8 owners say
Engine & cooling
The contact owns a 2015 Audi A8. The contact stated that while driving approximately 55 MPH, the check engine warning light illuminated and the vehicle that stalled. The vehicle was towed to the dealer. The dealer diagnosed the vehicle and stated that the engine failed and needed to be replaced. The vehicle had not been repaired. The manufacturer was made aware of the failure and opened a case. The approximate failure mileage was 110,000.
Engine stalled as i approached departure terminal at Newark airport. Dealer has inspected and determined the Turbo Impeller is bent and requires replacement. Car will not run. This is a known problem on Audi turbo engines apparently. Just prior to stalling the oil low light came on then the car stalled out creating a hazardous safety situation for a perfectly well maintained car.
Brakes
When braking the car vibrates, sometimes so violently that it is unsafe to keep applying the brakes to control the speed of the vehicle. Currently the vehicle has been in service since June 27, 2015 and has been driven 21,000 miles. However, this vibration has been noticed early in the life of the car. Originally, I thought the vibration was due to the road surface or condition, but I have come to realize that this problem is a vehicle fault. In the most recent incident we were driving from payson, arizona to mesa, arizona using the vehicle cruise control. On this road, us 87, there are a few inclines of about 6% that run for 2 to 3 miles. As the car gained speed going down the incline the cruise control would apply the brakes and extreme shuddering and vibration of the vehicle occurred. To maintain a safe speed we eventually reverted to engine braking to control a safe speed. …
I was driving on a suburban city street in a straight line with no cars or any other obstructions ahead of me or behind me. Without warning, the car engaged its emergency braking throwing my daughter and me forward violently into our seat belts. When I fell back, the dashboard was showing me a proximity warning but again nothing was anywhere near our car. The servicing dealer said they didn't find any error codes and so there was nothing they could do. This hasn't happened again (yet) but the cameras all around the car that engage for parking and in reverse are constantly going out and/or the vehicle mmi system randomly retracts into the dash while driving.
Wheels & tires
Car vibrates at almost any speed other than idle. I have had the car back to the dealer several times. The vibration can be felt through the steering wheel, the seats and on the dashboard. I can't get the car fixed. I have asked Audi to replace the car if they can't fix it. No response. I had 5 Audi A8's in the past and never experienced any such problem I am almost afraid to drive the car. I leased the car for 15,000 miles per year and only have 7800 miles in 11 months because of this fear.
I have owned my 2015 Audi 8l for 6 months and it has started to stall whenever I start the initiation button. Often times it will just shift off causing me to have to restart it multiple times. I brought this issue up my local Audi dealership and they have acted as if they were totally unaware of this issue. Also I keep getting low pressure in my from right tire, this keeps me from being able to drive long distances as I am military stationed in an isolated area.
2015 Audi A8 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 3.0L 6-cyl turbo diesel | 8-speed automatic | AWD | 24 / 36 / 28 |
| 4.0L 8-cyl turbo | 8-speed automatic | AWD | 18 / 30 / 22 |
| 3.0L 6-cyl supercharged | 8-speed automatic | AWD | 19 / 29 / 22 |
| 6.3L 12-cyl | 8-speed automatic | AWD | 13 / 22 / 16 |
EPA ratings. Class: Large car.
Frequently asked questions
Is the 2015 Audi A8 a good car?
Based on 31 owner complaints filed with NHTSA, the 2015 A8 rates avoid: 4.1× as many complaints as a typical year of the A8 at the same age. It is one of the A8 years we suggest avoiding. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2015 Audi A8?
The engine & cooling — 17 complaints, 55% of all complaints for this model year. Next are the brakes (4) and wheels & tires (3).
How many recalls does the 2015 Audi A8 have?
There are 5 recalls for the 2015 Audi A8, the most recent from March 23, 2022 (turbo/supercharger). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Audi A8?
The best years by complaints, compared at the same age, are 2018, 2022 and 2009. Years to avoid or approach with caution: 2013, 2015, 2019, 2014 and 2004. See the full Audi A8 years comparison.
At what mileage do 2015 Audi A8 problems happen?
The median mileage reported in complaints is about 48,000 miles; 58% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.