Wouldn't have gotten it except for the diesel - great mileage, quiet and plenty of torque for running around town or passing on the highway. Just took three teenagers to an amusement park 2 hours away and car was a pleasure to drive and everyone had gobs of room.
Comand system takes getting used to but actually works pretty well. Seats are outstandingly comfortable and car (Barolo Red) gets lots of looks
Bluetooth -- even if you paid for it -- is limited to just a few phones so that it integrates with Comand. MB's a little over-protective here (kind of like Blackberry and their lack of 3rd party software). Other issues are just nit-picking in my mind.