Just want everyone to know that before you buy a Mercedes Benz ask them to clarify their situation with NOX Sensors. This thing is attached to the exhaust and they are very expensive. With no fault of yours this thing just go faulty and the engine management light lights up. It's annoying that one have to pay for this when the fault is no fault of yours. Very annoying and expensive. User's recommendation: Don't buy a Mercedes. When something goes wrong they will screw you for every penny.