Hi, I picked up my 3.0 tdi quattro with manual box 1 week ago. I have noticed that there is a judder when pulling away in 1st or reversing. Also get the same judder when down changing from third to second at low revs. The car is going back to the garage next week, but I dont want to be fobbed off. What are the likley causes of this problem. The car has 45k on thr clock and is a 58 plate.