1999 Audi A6 review from North America

I have an Audi A6 Wagon. I had a horrifying experience driving in a snow storm last night. I had the car on cruise control and was traveling on Highway RT 89 North in New Hampshire. I was traveling up a hill when the car accelerated to maintain the cruise speed. Before I knew it the car had accelerated from 68mph beyond 75mph and was increasing. I tapped the brake, turned off the cruise control. The car did not respond and continued to accelerate as though I had pressed the gas pedal to the floor. I tapped the brake again, and then pumped the gas pedal. There was no response from the car. I applied constant pressure to the brake, but the car continued to accelerate to 85mph. I put both feet on the brake pedal and applied full pressure and the car fought back continuing to accelerate. I pushed with both feet with all my strength and the car slowed. The engine was still racing and it took me over half a mile to bring the car under 25mph at which point I shifted into neutral. When I shifted into neutral the tachometer red lined at over 7000. I pulled off the road as quickly as I could and shut the car off.

If my wife had been driving I do not believe she would have been able to stop the car. This could have very easily resulted in a fatal accident. This is the second time this has happened in the last month. The last time, my wife was driving in town. The last time we had the car towed to the location where the car was purchased. They did a repair and commented that they recently had repaired a number of Audi's with the same problem. When I called today to report a repeat of the problem they said they had had several cars with similar repeating problems.

I have been on line and read about problems with the 1998 A4 and A6 pertaining to acceleration problems. I have also read about the problems with the 5000. There appears to be a history here. Has anyone experienced these problems?