My brother and I both drive m3s sedans. He slid off the road on some ice about a month ago and its been in the shop for about 3 weeks. The body work was minimal. The front bumper popped out on the edges and the grill had a small crack. However, he said the car was driving wierd at high rpms and the body shop finally took it for a test drive and determined the motor mount is cracked. The under plate of the car was also damaged but the body shop attributed the broken motor mount to poor design. Anyway they sent the car to mazda to fix the motor mount. The accident was so minor but caused such a major problem. Makes me worried and would make me think twice about adding a turbo to a car with weak motor mounts.