hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
48,750 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2004 Audi A8 engine problems

engine problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2004 Audi A8:

Unsubscribe any time. We don't sell/share your email.

2004 Audi A8 Owner Comments

problem #4

Jan 242017


  • 183,000 miles


While driving and/or parking and/or putting key in ignition to start my vehicle ABS light; stabilization; and speedometer seems as though being hacked...sometimes especially in the summer when temperatures reach 100 degrees + my heater is hacked on and my interior of the vehicle is life threatening hot!!! have to open windows to 100 degrees temperature outside...my interior lights just come on and drain my battery....and my sound system flips open and music plays when im in my house and has shut off my car and while driving my sound system comes on and my radio is remotely controlled---hacked because my stations are switched ie. Tuned to different stations and my cds are scrolled through the tracks without my doing so....and my vehicle was hacked for it to speed up when I wasnt accelorating in a walmart parking lot....that could have injured myself or others..but I hit the brakes and cut my car off in a parking space...my speedometer is always being hacked that when I driving at no matter what speed....its being hacked to read 0 miles and threatens my ability to know my speed and it slows my engine performance...my park brake engages and I have to cut car off and this is highly dangerous while im driving....my steering once jerked but I miraculously wasnt in heavy traffic..I dont know who what or why but when I purchased my vehicle even the dealer boomer did alot of shady things in the service department to my vehicle.........please help...all the vehicles I buy are being hacked and eventually either recalled or crashed or damned near! or put out of order... and every insurance company I get.....my premiums go up without any reason except "its the state insurance commission" where I live changing state rules?

- Del City, OK, USA

problem #3

Jan 282011

A8 8-cyl

  • miles
I own a 2004 Audi A8 quatro, this morning the car accelerated on it's own. The driver seat, steering wheel, and the car suspension adjusted automatically while I was driving it and it went from 40mph to 150+ without me having my foot on the accelerator. For a minute I thought I was going to die. I slowly starting pressing on the brake pedal hoping the car would not flip. It took about 2 to 3 minutes for me to slow down the car. I put the emergency brake and turned it off. I turned it back on and the engine was still accelerated, it sounded it like the accelerator was stuck even though the car was on park.

- Cerritos, CA, USA

problem #2

Apr 012004

A8 8-cyl

  • 12,000 miles
The contact stated vehicle has accelerated on its own twice. The first time it took off he had to put in neutral and coast into a parking lot. The vehicle was put in drive and moved out of the main part of the parking lot. The vehicle was put back into neutral and turned off. It was towed to the dealership. They could not duplicate the problem. This happened again approximately 18 months later. He drove in driveway and put the vehicle in neutral to pick up the paper. The vehicle accelerated and he turned it around. The contact stood on the brakes and coasted to the end of the driveway. The vehicle was towed to the dealership. They could not duplicate the problem. The dealership cleaned debris away from the accelerator, and said the rug may have been stuck.

- Flemington, NJ, USA

problem #1

Dec 162004

A8 8-cyl

  • Automatic transmission
  • miles
Vehicle experienced sudden acceleration from 30 to 80 miles pmh. Consumer had to stomp on brakes several times in order to stop the vehicle. Taken to dealer to reset the computer, but the cause was undetermined.

- Barefoot Beach, FL, USA

Not what you are looking for?