Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

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really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
47,867 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 A4 engine problems

engine problem

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1998 Audi A4 Owner Comments

problem #10

Jan 032010


  • miles


1998 Audi A4 2.8 - driving along highway, in 7 degree temp, car started accelerating ( feels like it is driving itself) even after foot was removed from pedal and full force had to be applied to brake to stop the car at which point it went into high rev and engine was immediately turned off. Mechanic could find nothing wrong. This car also had 2 similar incident (once when new) and once a number of years ago. After much back and forth with Audi, they took the car in, and said they could find nothing wrong. As a precaution I had the cruise control disconnected and the throttle body cable replaced so felt the car was safe. (all at my expense)

- Ithaca, NY, USA

problem #9

Jan 192005

(reported on)


  • miles
Problems with the 1998 Audi A4 accelerating suddenly while driving during sub zero temperatures. ** answer required***.

- Unknown, DC, USA

problem #8

Dec 242004

A4 6-cyl

  • Automatic transmission
  • 128,269 miles
This incident happened in indianapolis Indiana around 11:40am the temperature outside was two degrees Fahrenheit. I was driving my 98 Audi A4 2.8 quattro North on a two lane city street with a speed limit of 35mph. I had been driving for twenty minutes and smelled a very powerful gas smell since I started driving. My foot was on the gas and all of the sudden the acceleration of my car increased to 45mph. I tried breaking to slow the car down and the break pedal resisted my effort. I was able to slow to 40mph but no lower. When I took my foot off the break the car accelerated greatly. Despite breaking, the speed kept increasing. I felt I had no control over my car. I was traveling for over a mile at speeds reaching 60mph on a 35mph speed limit. I approached a red light, luckily it turned green the minute I went under it. Had it not, I would have run the red light at a busy intersection. My car reached speeds too dangerous for the road I was on. I moved into the center lane into oncoming traffic, fearing I would hit the traffic in front of me. While driving over a mile unable to control my speed I was looking for somewhere to pull off and get out of traffic. When I did pull into the center lane I was able to turn into a parking lot at 50mph. I pushed the breaks with all my might; it did not stop the car, so I put it in park and turned the ignition off. Had I not found that parking lot, I would've run into a snow embankment or hit a building. There was no chance my car was stopping and I had no control of the speed or breaking. I am very lucky that parking lot was empty. I realize that my speeds were very dangerous on this road. Speeds of this nature could've resulted in damaged property and injuries or death to myself and/or others. This was a very frightening and upsetting experience that could've resulted in major damages, injuries, or even death. My safety was compromised.

- Greenwood, IN, USA

problem #7

Jan 162003

A4 6-cyl

  • Automatic transmission
  • 65,500 miles


In extreme cold weather throttle may unexpectedly fail to return to idle when the accelerator pedal is released, making it very difficult to stop the car.

- Millburn, NJ, USA

problem #6

Jan 082004

A4 6-cyl

  • Automatic transmission
  • 89,000 miles
My Audi A4 avant 2.8 quattro 1998 accelerates on its own in cold temperatures ( below 15 degrees F ) and two dealerships failed to find the problem so far. It happens when the engine has warmed up partially, but has not reached it's operating temperature yet.

- Blue Bell, PA, USA

problem #5

Jan 262004

A4 6-cyl

  • Automatic transmission
  • 110,000 miles
1998 Audi A4 quattro 2.8 accelerator throttle stuck open this winter several times causing an accident at my home.

- Amherst, NY, USA

problem #4

Jan 152004

A4 6-cyl

  • Automatic transmission
  • 85,900 miles


Throttle sticking on acceleration in sub-zero driving temperatures. Brakes enabled me to stop car and shut off engine. If I took my foot off the brake, the car re-accelerated to the stuck position. Once the engine was shut off, engine heat evidently melted the ice and idle speed returned to normal. Have spoke to other Audi owners and they have experienced similar stuck throttle problems in sub-zero driving temperatures. Independent Audi repairmen have suggested the problem is caused because there is no source of heat (exhaust hose routing or engine cooling routing) near the throttle plate and there is no fix or repair to this design problem. If a crash occurs, the engine heat melts the ice buildup before a cause of accident can be determined. When I contacted an Audi dealership to ask if this is a problem with others and to get repair advice, they were unaware of this problem type and just said to be very careful driving. I also contacted Audi customer service to file a report and they also said they are unaware of this being a problem but did give me a case number (881108347). It is -9 degrees today and -18 is forecast tonight. I am afraid to drive this car in sub-zero temperatures. Next time I might not be on a back country road when the throttle sticks.

- Whitingham, VT, USA

problem #3

Jan 082001

A4 4WD

  • miles
Cruise control inoperative.during high speed braking car shimmies and hops. Problem began after serviced by Audi as per Audi brake recall. In the last 12 months my Audi has spent 2 months at the dealership for repairs. This vehicle is a lemon.

- Indio, CA, USA

problem #2

May 212000


  • miles
Bolt for cruise control servo fell out resulting in servo becoming wedged in engine area and causing sudden acceleration of the vehicle on highway.

- Jacksonvil, FL, USA

problem #1

Jun 222000

(reported on)

A4 4WD

  • miles
After driving on the highway in the rain, when brakes first applied, the car accelerates, then brakes after 1-2 seconds. This is very unnerving and the dealer says Audi knows about this but there is "no advisory or technical bulletin to fix it" please help. Otherwise, this car is one of the best.

- Norwich, CT, USA

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