Hi need some advice or some knowledge from some asap .. Got an a3 2.0 t fsi with an auto box and come across a fault and need a help to see if someone knows before take it into a garage. Basically when selected drive and it goes into 1st the car kind of rolls as it should but them kind of judders like its going to stall. Then it's fine. It does it in reverse aswell. Not all the time but minority it does. Any ideas please?