I got the upper motor mount on my 2000 SL1 replaced today. The car had been vibrating like a Ford Pinto at lower RPMs. 88K miles on the odometer. It took around an hour and was 5. I started the engine after getting it back and was very surprised how quiet the car was. It drove like a new car and the transmission felt tighter upon shifting. No more vibration and soooooo much quieter when idling in traffic. The service advisor suggested my brakes need bleeding and the radiator needs flushing for the next visit.