Hi there, Please forgive me Im not mechanically minded. I have had my 04 a4 1.9tdi for 4 months and have a problem with the car vibrating/shaking. The car starts to shake at 60mph and becomes really bad from 80mph onwards. I have been back and forth to the garage over the months and all he keeps checking is the wheel balancing and tracking which are always right. When I first looked at the car I was told the timing belt and water pump were changed on the 60k service. However, the service wasnt done by a dealer but by a side street garage. If the belt was not timed correctly would this be the cause of the car vibrating and shaking the way it does? Any help or advice will be much appreciated. Thanks, Gavin.