definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
32,199 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.

2003 Audi A4 engine problems

engine problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2003 Audi A4:

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

2003 Audi A4 Owner Comments

problem #7

Apr 042015


  • 100,000 miles


The contact owns a 2003 Audi A4. While driving at 40 mph, the accelerator pedal became stuck to the floorboard of the vehicle. The contact stated that the accelerator pedal had to be lifted with her foot for it to go back to normal position. The failure recurred on three occasions. While at a complete stop and attempting to accelerate, the vehicle would jerk. The vehicle was taken to an independent mechanic where it was diagnosed that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 100,000.

- Bay Point, CA, USA

problem #6

Dec 012007

A4 4-cyl

  • Automatic transmission
  • 55,935 miles
As I was driving on the highway and accelerated to about 65 mph, the gas pedal would lift slightly away from my foot (like I just turned on cruise control, but I had not touched the cruise at all) and when I lifted my foot completely away from the pedal, it would stay steady at 65 mph. I braked to slow the car down, and the car would slow as long as my foot was on the brake, but once I let off the brake, the car would maintain the lowered speed. This happened several times and I felt that I had little control over the acceleration/deceleration of the car. At one point, I slowed the car down completely to a stop and had my foot on the brake, the car was still in drive and though my foot was on the brake, the RPM's were still around 2000. I immediately put the car into park and the tach revved up to between 4500 - 5000 RPM, as if the gas had been pushed. I tapped my foot on the gas a few times lightly and the gas pedal seemed to come unstuck and the car went back to idle RPM's (<1000). I turned the car off and pumped the gas pedal a few times, then cautiously drove home.

- New York, NY, USA

problem #5

Apr 072007

A4 6-cyl

  • Automatic transmission
  • 60 miles
I accelerated on the highway to pass a vehicle and to take the upcoming highway exit. The accelerator appeared to be depressed to the floor and was stuck for a period of time. The vehicle was out of control, and I pumped the brakes several times to finally slow down the vehicle.

- Alexandria, VA, USA

problem #4

Jan 012006

A4 4-cyl

  • Automatic transmission
  • 35,000 miles


On two occasions between January 2006 and May 2006, after fully stepping on and subsequently releasing the accelerator pedal, the car continued to accelerate as if the accelerator was stuck to the floor. I then quickly pressed on and released the accelerator three or four times before the throttle finally let up and the car stopped accelerating. After both occasions, I checked the floor mat and it was secured to the floor and away from the accelerator pedal.

- Beverly Hills, CA, USA

problem #3

Jul 022005

A4 4-cyl

  • Automatic transmission
  • 13,500 miles
On July 2, 2005, at approximately 11:00 a.M., I was driving with my two children (ages 7 and 9) North on interstate 5 near lajolla, ca. I was traveling at approximately 70-75 miles per hour. Suddenly, my car began to accelerate. Thinking that the cruise control had engaged, I stepped on the brake to disengage it. Although my car slowed a small amount, the engine continued to rev higher. I then took my foot off the brake (fearing that my brakes would wear out and were not very effective in any event), and the car acclerated again. I succeeded in moving toward the shoulder, put the car in neutral, and applied the brake. While this succeeded in stopping the car, the engine continued to rev up as I was stopped in the emergency lane. With my left foot on the brake, I used my right foot to step on the accelerator in an effort to disengage it. After approximately a minute, the accelerator disengaged, and the engine rev'd down. After the incident, I drove the car home at a significantly slower speed, and the problem did not recur. On Tuesday, July 5, I called miramar Audi and reported the problem to ben boswell. He asked me when and where the incident took place, and whether there was any construction in the area. He explained that Audi North America had instructed him to ask this question, because they had received other complaints of Audi A4S with the same problem. (there was no construction). He also told me that he had 4 or 5 A4S in the shop with the same complaint. My car was at miramar Audi from July 5 until July 13. On Monday, July 11, Mr. Boswell told me that they had run a computer diagnostic on my car, and could not find any problem. He also told me that he had had extensive communications with Audi North America, and that he had been told to release the car to me. After several contacts with Audi North America (which I can provide in detail), I was told that the problem was most likely caused by my floormat being out of position.

- Del Mar, CA, USA

problem #2

Feb 282005

A4 4-cyl

  • Automatic transmission
  • miles
While driving 50 mph driver applied the accelerator pedal and it stuck to the floor. This caused the vehicle to accelerate uncontrollably. Driver was able to maintain control of the vehicle and pulled over. Vehicle was taken to the dealer for inspection, but mechanic could not duplicate the problem.

- Los Altos, CA, USA

problem #1

Mar 052004

A4 4-cyl

  • Automatic transmission
  • 20,900 miles
Accelerator pedal stuck while driving on the expressway at 70 mph. When this occurred vehicle speed accelerated to 90 mph. Consumer had to stick foot underneath the pedal and lift it up, and then put vehicle in neutral to stop the acceleration.

- Tinley Park, IL, USA

Not what you are looking for?