2007 Mercedes-Benz C350 4MATIC Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2007 Mercedes-Benz C350 4MATIC

Catalytic converter failure is common and may cause a Check Engine Light to illuminate.

The heating, ventilation and AC (HVAC) heater box is susceptible to mildew buildup. This can result in a musty odor from the HVAC system, most noticeable when the system is first turned on.

Vehicles equipped with a 7-speed automatic transmission may develop a rough shifting condition, most commonly going up from first to second gear and going down from third to second or second to first gear. Our technicians tell us this is due to an internal component failure. Mercedes has released updated parts; the transmission will need to be removed and disassembled to complete the necessary repairs.

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Whenever the car is shifted from park to reverse there's a noticably long delay before the transmission engages. Then I feel a "thud" and the car moves in reverse. This occurs whether my foot is on the accelerator or not.

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