2019 Audi Q8: engine stalls while driving

Filed Oct 15, 2026 · Engine · WI

the federal safety agency Vehicle Safety Complaint – 2019 Audi Q8 Prestige, 3.0L Turbocharged V6 I am reporting a serious engine defect involving piston damage and cylinder wall scoring in my 2019 Audi Q8 Prestige equipped with the 3.0L turbocharged EA839 engine. Audi of America has previously acknowledged a piston-skirt concern affecting certain vehicles equipped with this engine and issued U82 warranty-extension letters to affected consumers, extending piston-skirt coverage to 8 years or 80,000 miles. Despite this known concern, my vehicle has developed significant internal engine damage requiring major repairs. I initially reported an abnormal engine knocking noise to an authorized Audi dealership during the original factory warranty period, at approximately 47,000 miles. The dealership advised me that this noise was normal and did not correct the underlying condition. On August 25, 2026, at approximately 78,910 miles, I again contacted Audi regarding the engine concern. The earliest available dealership appointment was September 7, 2026. By the time the vehicle was inspected, its mileage had exceeded the 80,000-mile warranty-extension threshold. Audi Loves Park subsequently confirmed piston-related engine noise and cylinder wall scoring affecting cylinders 4 through 6. The dealership determined that substantial internal engine repairs were necessary. The primary safety concern is the possibility of catastrophic engine failure and sudden loss of propulsion while driving. Continued operation with damaged pistons and scored cylinders could result in additional engine damage, engine seizure, or stalling, creating a significant collision risk during highway driving, merging, or passing.

Filed Sep 18, 2025 · Engine, Fuel system · TX

engine begin to misfire and felt like it was ready to stall. within a minute of the misfiring the engine light came on. i was in the middle of highway struggling to get my vehicle to the dealership where purchased which thankfully was only 5mins away. tech heard noise coming from fuel pump near the engine and recommended replacing along with spark plug. after replacing tech advised me to take my vehicle to audi to perform a software update that will correct the misfire and prevent the MIL from illuminating. Got that done to only be presented with a knocking noise again a month or two later. Took my car back to Audi to run a full diagnostic to find out my engine is in early engine failure due to metal shavings in the oil filter. tech states shavings in the oil could originate from the fuel pump failure and the debris would have traveled into the engine oil causing critical damage to the engine.

Filed Jan 25, 2023 · Electrical · NV

Alternator/Ignition Generator died while driving vehicle causing vehicle to die in the middle of the road.

Filed Nov 9, 2022 · Fuel system · 36,700 miles · VA

The contact owns a 2019 Audi Q8. The contact received notification of the federal safety agency Campaign Number: 22V516000 (Fuel System, Gasoline) however, the part to do the recall repair was unavailable. The contact stated while driving at an undisclosed speed and then stopping at a traffic light, the vehicle stalled. The contact stated that he restarted the vehicle several times however, the failure recurred several times. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The failure mileage was approximately 36,700. VIN tool confirms parts not available.

Filed Jun 12, 2019 · Acceleration, Engine · UT

Excessive and dangerous delay in throttle response due to auto start/stop system causing vehicle to coast when slowing down at a yield sign or intersection etc before transmission re-engages. The vehicle is powerless for several seconds despite application of gas pedal, causing oncoming traffic to potential collide with "stalled" q8. This is a major design defect in the auto start/stop system and occurs every time the system is active.