really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
57,273 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.

1998 Audi A6 engine problems

engine problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 1998 Audi A6:

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

1998 Audi A6 Owner Comments

problem #11

Mar 082007

A6 4WD 6-cyl

  • Automatic transmission
  • 100,000 miles


- the contact owns a 1998 Audi A6. There recall 04V495000 in October 2004 concerning vehicle speed control. On 3/08/07 the contact was driving at 65 mph and without warning the vehicle accelerated to 90 mph. The contact was unable to reduce the speed, engage the brakes or place the vehicle in neutral. The contact had to force the vehicle in park with the transmission grinding and turned the engine off. The vehicle was towed to the dealer, and they stated that the vehicle has been serviced for every recall. Road conditions were not a factor. Audi and the dealer stated that the recall repair was performed on the vehicle. The contact didn't agree that the repairs were performed due to the failure she experienced. Audi assured the contact that prior to purchasing the vehicle all related recall repairs were performed. The current and failure mileage were both 100,000.

- St Albans Bay , VT, USA

problem #10

Apr 212006

A6 6-cyl

  • Automatic transmission
  • 107,000 miles
: the contact stated while traveling 40mph and attempting to pass another vehicle, the throttle stuck in an open position. The brakes were applied; the vehicle was shifted into neutral and moved to the side of the road. The vehicle's engine was turned off and on in an attempt to release the throttle, but this attempt failed and the engine raced with the transmission in park. The vehicle was towed to the contacts home and the dealer has been alerted.

- Butler, TN, USA

problem #9

Mar 192004

A6 6-cyl

  • Automatic transmission
  • miles
I own a 1998 Audi A6 which on several occasions has experienced sudden unintended acceleration. While attempting to slow the vehicle by braking for a stop, the engine starts to accelerate and rev all the way to 6000 rpms. The only way to avoid an accident was the depress the brake pedal as hard as possible, put the gear selector in neutral, and turn the engine off. After restarting the engine, the vehicle would operate in a normal fashion. This problem extremely dangerous situation has occurred 3 times since I purchased the vehicle (Audi certified pre-owned) and has been reported to the local Audi dealer on several occasions. They can find nothing wrong with the car.

- Skaneateles, NY, USA

problem #8

Jan 012004

A6 6-cyl

  • 85,000 miles


While driving at any speed vehicle accelerated on its own. Vehicle was taken to the dealer for inspection, but dealer was unable to resolve the problem. The dealer suggested the following issues: The floor mat was on the gas pedal, wires were damaged, and a part that was previously replaced per recall failed.

- Middlefield, OH, USA

problem #7

Feb 012004

A6 6-cyl

  • Automatic transmission
  • 107,000 miles
I have an Audi A6 2.8 1998 during the winter 2003 I was driving during the morning the car was on for 20 minutes and temp was 14 degrees F. speed was 65 mph as I approached my exit. I let off gas an car accelerated pushed brake down. Car came to stop but idle was at 1800 RPM and car wanted to lurch forward. Made it to work 1 mile away brought to mechanic and he found no problem but he did clean the throttle body. No problems, for 3 weeks. Event two: Going home 6:30pm temp 15 F speed approx 60 mph going up hill. Car started pulling faster. Decided to pump gas pedal figuring stuck cable just went faster. Decided to see if would stop at specific speed approached 95 mph realized car would keep going. Stepped on break, pulled to side finally came to stop. Turned car off, waited 30 secs started car. RPM out of control. Turned off car and waited 5 minutes. Turned car on, no problems. Went back on my way happened 3 more times that winter. Temp is always between 14-17 F car is always warmed up. No problem during spring, summer, or fall year 2004. Moved closer to work, car ride never longer than 10 minutes. One time car on hill doing 65 mph speeded up pulled over turned car off waited 6 minutes (timed) turned on car no problem from my results car problem always occurs when temp 13-17 F car is warmed up if problem occurs pull to side of road car is stopped but RPM 1800+ turn car off wait 5+ minutes start car no problems.

- Derby, CT, USA

problem #6

Jan 052004

A6 6-cyl

  • Automatic transmission
  • 91,000 miles
Car was purchased used (1998 - 90K miles-one owner-very well maintained) first week of December 2003. Incident happened approx. First week of January 2004. Audi has been contacted with no reply received to date. Incident occurred while traveling on highway approx. 50 mph, weather conditions were clear and very cold (approx. 25F). As auto was cresting incline, it began to gather speed. Accelerator was backed off but car continued to accelerate at an alarming pace. Brakes were applied several times and as I was preparing to cut ignition car stopped accelerating. This happened is a matter of seconds, but was definitely a panic situation. Car has not repeated this condition. I was referred to your site by audiworld forum members, where I turned for any helpful information and read of similar occurrences.

- Klamath Falls, OR, USA

problem #5

Jan 222003


  • miles


I was rear-ended at a stop light on a limited access highway by a 1998 Audi A6. The person driving the car stated that her car was accelerating even when she took her foot off the gas and stepped on the brakes. She had managed to stop the car about 15 feet behind me, but, when she took her foot off the brake, she hit me at about 10 mph

- W Hartford, CT, USA

problem #4

Jan 242003

A6 6-cyl

  • Automatic transmission
  • 92,000 miles
1998 Audi A6 quattro: While driving on the highway coming to the exit ramp for M Y home the car wouldnt stop. When the brakes were applied the engine kept on revving as if the cruise control was set, however it was off. Couldn't stop the car until luckily at the last minute the engine died and an accident with a stopped car at the end of the ramp was avoided. Two small children were in the car at the time and both were terrified. I calledthe local Audi dealer and they told me they have never heard of anything like that ever happening before. Then I see this site and realize that it has!!! the car just wouldn't stop!!!

- Akron, OH, USA

problem #3

Jan 182003

A6 6-cyl

  • Automatic transmission
  • 48,000 miles
Vehicle speed control: Vehicle continued to accelerate after releasing accelerator and while depressing brakes. RPM's rev'd as high as 5000.

- Mahopac, NY, USA

problem #2

Apr 232002

A6 4WD

  • Automatic transmission
  • miles
Vehicle would continue to accelerate, even after removing foot off the accelerator pedal. Dealer and the manufacturer were notified.

- Phoenixville, PA, USA

problem #1

Jan 091999

A6 4WD

  • miles
Fuel injection system did not disengage when brakes were applied, engine continued to rev at 1600 to 1800 RPM with brakes fully engaged.

- Mercer, WI, USA

Not what you are looking for?