My 1999 Audi A6 2.8 has ABS control module failure. This appears to be a common problem among 1996 to 2001 Audi's and VW's lack of anti-lock braking system control makes my vehicle unsafe. Audi is not willing to correct this problem. This problem affects a large number of vehicles.

- Atlanta, GA, USA

Driving home tonight my car all of a sudden started accelerating (I drive an Audi A6 1999). Using the brakes I was able to slow it down enough to get off the freeway though my brakes seemed to be fighting against the car. I rolled through two stop signs as my car would not stop and luckily avoiding the other cars waiting there I was able to put my car in park and turn off the engine. I waited ten minutes or so and tried starting my car. The engine revved to 4 to 5000 rpms so, I quickly shut it off again. I waited again, tried it once more and the car started fine. I drove home, called the dealership and was told I could be seen on 02/14/11. Four days from now. This is the second time this has happened.

- Arden Hills, MN, USA

I have a 1999 Audi A6 quattro -- ABS unit light flashes, diagnosed as a defective control unit. This appears to be a very common problem with Audi and VW and a serious safety issue.

- Alpharetta, GA, USA

1999 Audi A6 avant with serious safety issues. Consumer would like Audi to pay for the last 4 repairs that needed to be done. Consumer has had some serious safety issues with this vehicle and states that it is a lemon. There was a rumbling noise coming from the engine, there was an oil leak coming from the engine, the engine light illuminated due to a bad pipe, the front rotors and pads were replaced, the transmission was leaking, the back wheels were dragging so the pads would not release, the brake and ABS light illuminated, the cruise control was inoperative, T he sunroof was inoperative, the tie rods needed to be replaced, the timing belt, water pump, gasket oil cooler and serpentine belt were all replaced.

- Mount Pleasant, PA, USA