I have a problem with the steering of my A6 (2.7T Quattro 2000w) which is especially noticeable just after starting when cold. Just after starting and moving away if I turn sharply such as moving out of a parking bay in either forward or reverse I get a clunk or crunching sound. Its as if one the front wheels isnt going round in sync with the other wheel and so slipping instead of turning. This has never happened before in the two years of owning the car and only started in the last few weeks. I have taken the car to a dealer and they claim that its normal for quattros to do this. Once warmed up I dont get the problem.