 I miss the quick warm ups, the handling, and the performance of my BMW.The Mercedes rear window defroster works very slowly, the car takes a long time to warm up.It is strictly a luxury car.I do like the fact that it has had fewer trips to the dealer than the BMW, but it is not as enjoyable to drive. Oh yes, the windshield washer tank keeps leaking so I always have a malfunction showing on the dash, and when that shows, you cannot access the other features of the car's computer.