Three problems related to car accelerates on its own have been reported for the 2003 Audi A4. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Audi A4 based on all problems reported for the 2003 A4.
While driving from GA to nc the car accelerated suddenly from a traffic light. I could feel the accelerator move away from my foot and I had pressed the clutch and break to avoid an accident. I noticed the tachometer was above 5000 rpm and I turn off the car and coasted into a gas station. I checked the floormats and the accelerator and everything seemed fine. I restarted the car and cautiously continued my trip. Everything seemed okay until I was close to my destination. Then I experienced the same uncontrolled acceleration. Again, the only way to stop the car was to turn off the engine. I took the car to an Audi dealer in nc and they told me there were no faults and therefore no problem. They suspected the floormats.
Sudden acceleration. I was coming back from the store, and twice I stepped on the gas and the pedal went to the floor on its own! I hit the brake and kept the car from running away while I pulled the pedal up with my other foot. When I got back home, I put it in neutral, gave it a little gas, and it went into full acceleration. I could feel the gas pedal pull away from my foot and go to the floor. I had to turn the key off to stop it. It was not "floor mats" or driver error. The next day, the problem was gone. I drove to the Audi dealer. They replaced the gas pedal assembly and the problem appears to be fixed.
Sudden, unintended acceleration of 2003 Audi A4 while in 4th gear. Rpms spiked and remained at 7 after foot was removed from accelerator. Experienced loss of control of steering. Was eventually able to slow and stop car via brakes. After completely shutting car off and removing key, car was restarted and engine revved up to 7 rpms with zero acceleration. Occurred on queensborough bridge - police were called to assist.