I bought a 55 plate A6 Avant S-Line 2.0 TDi manual a couple of months ago. Yesterday I took it out on ice & snow for the first time and found myself getting repeatedly stuck on the slightest incline. I also got the car into a few sideways slides which was very dangerous - all at low speed. Previously I had an 02 plate A6 Avant 1.9 TDi manual which was rock solid in snow and ice. Switching off ASR or ASR & ESP made no difference. I was so alarmed that I was convinced the traction control must be faulty. I took it into the dealer who hooked it up to the diagnostics equipment which said nothing is wrong. I don't know what to do now. The car is not safe to take out in snow/ice especially if not within each reach of home. I am seriously disillusioned. Has anybody got any other ideas?