 The diesel engine is perfect for this SUV.It is very solid and the transmission shifts smoothly. The ride is better than my previous SUV, a Mercedes ML500.  The iDrive is very frustrating and the navigation system is poor compared to the older Mercedes system, and can't begin to compete with a $200 Garmin.  There is no setting to automatically fold the power mirrors when locking the vehicle, and the front parking sensors are not full time - when pulling into my garage I must stop and push a button that also turns on the rear camera to check on the front. Amazingly, BMW does not include  floor mats as standard equipment and they must be purchased separately from the dealer.