Audi S5 Engine Problems
31 owner complaints filed with NHTSA across 8 model years.
Complaints by Year
Worst year: 2018. Best year: 2023.
Owner Reports
A representative sample of complaints filed with NHTSA.
•Parking Brake Issue: The parking brake failed to disengage after stopping, leading to an accident. •Intoxalock Device Malfunction: The Intoxalock device malfunctioned with incessant beeping and intermittent error messages, causing d...
The contact owns a 2025 Audi S5. The contact stated that while driving at an undisclosed speed, the vehicle lost automotive power. There was no warning light illuminated. The vehicle failed to respond while attempting to drive. The vehic...
I am writing to file a formal safety defect complaint regarding the EA839 3.0T turbocharged V6 engine installed in various Audi models, including but not limited to the B9/B9.5 S4 and S5, C8 A6 and A7, and 4M/4M.5 Q7 and Q8 (model years ...
Known-Best Assesment-Piston Skirt Defect and Non-Disclosure of Prior Issues: Approximately only three months after purchase of a brand new 2025 Audi S5 on 6/11/25 , I received a letter from Audi of America acknowledging a potential pisto...
VEHICLE Year: 2018 Make: Audi Model: S5 Prestige Trim: 3.0 TFSI (EA839 V6 Turbo) Mileage: 86,000 Engine Code: CWGD COMPLAINT TITLE Latent Engine Failure – EA839 Piston Skirt + Rocker Arm Defects – Dealer Broke Engine Cover, Left Wir...
Water pump failure due to coolant migration.
Our gas tank fuel level sensor is faulty so we can no longer tell how much gas is in our car. The check engine and fuel light are permanently on. This fuel sensor malfunction caused me to run out of gas in the middle of the road. The...
I received a coolant overheating message, pulled to side of road. Let vehicle cool off although it just showed coolant warning and actual engine temperature showed normal along with oil temperature. Started car back up and it was ok, dro...
Fuel gauge does not move at all and showed tank was 5/8 full. However, when I was on the freeway, the vehicle stalled because I was out of gas. Luckily, I was on the right lane and therefore was able to pull over to the side without an i...
Whenever the ambient temperature outside goes above 95F degrees or I sit in traffic for long periods of time the shuts off. Other times it stalls. There are no warning lamps that turn on to warn of impending shut off. When the car was sc...
The 2018 year for the Audi S5 has a notorious rocker arm failure within the engine. Audi is aware of this problem because they have revised the part for later build dates. However, they have failed to remedy the issue for the vehicles th...
I WAS DRIVING IN A CONSTRUCTION ZONE NEAR MY HOME IN HEAVY TRAFFIC IN RUSH HOUR ON AUGUST 21, 2019, WHEN THE VEHICLE STOPPED DEAD WITH NO WARNING; THE ENGINE SIMPLY CUT OFF. IT WOULD NOT RESTART. THE CAR BEHIND MANAGED TO STOP, BUT THE ...