 Coolant was leaking out of the car of the weekend. Dealer was able to get me in fairly quickly. Turns out the water pump has to be replaced on a vehicle with 22,000 miles. I have owned Dodges, Mitsubishi, Mazda, and Nissan and never had a part like that go out at such low mileage. Side airbag sensor in the drivers seat also needed to be replaced during the first month of owning.  Quality German engineering huh. At least it was covered under warranty and I got a lender. Guess I expected more from Mercedes.