Hi I'm new to the forum and I've been looking at getting an A4. I currently own a BMW 320d 2003 touring and I've had nothing but problems with it. Its seems quite common for BMWs to go wrong a lot and I was wondering if Audis have any common faults that could be quite costly? I'm particularly interested in the B7 models in the estate style. Any information on the matter would be greatly appreciated. Thanks, Authun