This car could be great if only it wasn't constantly returning to the dealer on the back of a tow truck. We bought it new and within 6 months the front engine gasket blew out. Two months later the same thing happened, but this time the leaking oil caused a serpentine belt failure and we lost the steering -- not good when driving down the road in a 3-ton SUV. A few months later the power steering pump failed. Today we discovered oil all over the garage floor. Absolutely unacceptable reliability. As soon as the Mercedes dealer patches the thing back together it will be off to the BMW dealer to trade it in.