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Engine & cooling

Audi A8 LWB Engine problems by year

10 complaints filed with NHTSA about the Audi A8 LWB's engine & cooling. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.

Engine complaints by model year

YearEngine complaintsCrashesInjuriesRecalls
20193000
20171100
20166000

Latest A8 LWB engine complaints

2019 Audi A8 LWBElectrical systemEngine & cooling

Message appeared on display Jan 7 2023: "Electrical system: Malfunction! Please contact service" The trunk lid opened while I was driving, the a/c quit (I am in Key West!), the auto start/stop quit. I had heard of many other Audi owners whose car just quit, so I scooted home and parked. I had it towed to Coral Gables FL at my expense, and the dealer told me it was an alternator problem that needed to be replaced. None available in the US, could be months before it's repaired. Car is 2019 Audi A8 with 42,000 miles.

Filed Incident Electrical system · Unknown or other · EngineNHTSA 11502629
2016 Audi A8 LWBEngine & cooling

My car was schedule for the 21H7 recall. I received 2 letters this year to have the recall work done. Audi of Pittsburgh's only available date was 12/08/22. I took the car in and later that day I got a call stating the recall was done back in March of this year. I told them it was not. Later I got a call saying it was done in April of 2019. I asked for the repair order and no one will provide it. To me it seems that Audi is looking for a reason not to perform the work.

Filed Incident EngineNHTSA 11497032
2016 Audi A8 LWBEngine & coolingFuel systemBody, doors & structure

The contact owns a 2016 Audi A8. The contact stated while driving at various speeds, the vehicle hesitated. Additionally, after starting the vehicle in the morning, the vehicle was shaking until the engine warmed up. The contact stated no warning light was illuminated. The contact had taken the vehicle to a local dealer, where it was diagnosed; however, the cause of the failure was not determined. The contact researched online and related the failure to NHTSA Campaign Number: 22V178000 (Engine and Engine Cooling),...

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20V397000 (Structure), and 19V057000 (Fuel System, Gasoline). The vehicle had not been repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 42,000.

Filed Incident Engine and engine cooling · Fuel system, gasoline · StructureNHTSA 11480781
2016 Audi A8 LWBSuspensionEngine & cooling

Recall for turbo internals, but nothing done to remedy problem . Second issue in leaking suspension parts, which the dealership let problem continue, until warranty up.

Filed Incident Suspension · EngineNHTSA 11463254
2019 Audi A8 LWBTransmission & drivetrainEngine & coolingDriver assistance

Vehicle engine would suddenly stop working, warning, "drive system malfunction: stop vehicle safely." It has happened 3 times within 3 days in the middle of the intersection. Dealers wouldn't take this issue seriously and they asked me to make an appointment online, which is scheduled to be 1 month away. The issue almost caused an accident twice. Adaptive cruise is also malfunctioning, engine random misfire, sunroof rattle, etc. This car is just so problematic it only has 20,000 miles on it and had scheduled maintenance performed just a month back.

Filed Incident Power train · Engine · Forward collision avoidanceNHTSA 11452496
2017 Audi A8 LWBTransmission & drivetrainEngine & coolingCrash

The 2017 A8L 4.0T is equipped with a engine Start-Stop system that switches off the engine when the car is motionless, to save fuel. The system is supposed to restart the engine immediately when the brake is released. This system malfunctions routinely and refuses to restart, leaving me with an immobile car at stoplights and intersections, putting me and my family at risk. This safety hazard has caused two accidents. In the first incident, I parked in my spot and got out of the car. The Audi rolled backward and...

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collided with the car parked behind (insurance claim filed). In the other incident, I was stopped at an intersection, at an incline. The car failed to restart when I took my foot off the brake and rolled back, colliding with the truck behind me. My rear bumper was damaged, truck was not damaged. The car was inspected multiple times, and problem was reproduced by the Audi dealer. They attempted fixes, but failed to solve the problem. No warning lights or message appeared to alert me to this start-stop system failure.

Filed Incident Power train · EngineNHTSA 11451619
2016 Audi A8 LWBEngine & cooling

I was driving and my turbos blew causing my car to shut down and not be able to restart. I was in the middle of traffic and was lucky to pull over. There was no warning and I had my 2 young kids in the car and it could have caused an accident. This was dangerous for myself and other motorists. I use this vehicle as a daily driver and this should not happen. I have not had it repaired yet but I can only imagine it will costs thousands of dollars.

Filed Incident EngineNHTSA 11422431
2016 Audi A8 LWBEngine & cooling

Car stalls unexpectedly when driving on city streets or highway. Cause due to turbo issues

Filed Incident EngineNHTSA 11406251
2016 Audi A8 LWBEngine & cooling

Was driving on the highway for 2 hours, slowed down to exit to a gas station, once on the route car shut down, all systems inoperative steering and brakes soon harden could securely stop at gas station with impulse. Car could not be turned on again easily, and in my drive to the closest hotel (2 mniles) car will shut down if not constantly accelerated. Dealer told me two turbos needed to be replaced. Car had 45k miles, less than one month off cpo warranty (i.E., Perfectly maintained).

Filed Incident EngineNHTSA 11388662
2019 Audi A8 LWBEngine & cooling

I own a 2019 audi a8 with 2000 miles on it. This nearly has caused me accidents and other audi a8 owners are also voicing complaints. The dealer is aware of it but said audi engineers will not address it. After coming to a stop, upon pressing the accelerator the vehicles does not respond for three or four seconds and then abruptly takes off. There is a major hesitation and can be dangerous if you are pulling out in an intersection with traffic approaching. After the 3-4 second delay, it then dangerously speeds...

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ahead. This has nothing to do with the on/off switch as it happens in all settings. There is something wrong with the throttle and delay and it will cause accidents. Please see online with audi owners and it needs to be addressed asap. The dealer has not solution. This applies to all settings. It does not matter if you go straight, left or right. Please help us save lives.

Filed Incident EngineNHTSA 11352660

Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data

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