Have a 2005 A4 s-line B7 model. The car has covered only 53500 miles from new. Timing belt and water pump changed in Audi at 36000 miles. Last week the car cut out on me and after inspection from Audi they said that oil pump chain had snapped and caused engine to seize-estimated cost for replacement engine and fitting is £7500!!! I challenged this and they offered to pay half (£3750) with me paying other half. They say they have no record of a fault as there is no work being carried out at the dealership-is it any wonder at these prices??? I can't believe the amount of cars around the same mileage and same model have all failed yet Audi deny its a problem. I now own a worthless but otherwise immaculate,fully services A4 s-line. Will never buy an Audi again due to this!!!