The biggest disappointment is with lack of traction. You get on it with traction control off, and the tires spin. With ATC on, the car responds by actually coming to a halt right after take off. You nurse the pedal, and start wondering if you should have saved a few $K and bought a SL600. The convenience features controls are very inconvenient as one goes through the menues to change settings, etc. Also a few electrical problems with the convenience package: Driver's seat won't retract on exit. Car won't start easily if left parked for 2 or more days. "1-" or "2 Malfunctions, Convenience Functions Unavailable" is often displayed with no indications of the problem. Then corrects itself
Engine power. Great seats.
1. Display some features seperately from the "convenience system". eg. Ambient temp. 2. Improve traction 3. 4500lbs is excessive for a roadster 4. There must be a way to decide to lock the shifter in its current gear regardless of where the shifter was just before the decision. Not on the SL65