Mercedes-Benz C300 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Mercedes-Benz C300

A vibration felt through the center floor of the vehicle can be caused by driveshaft flex discs, which crack and shred, causing excessive driveshaft movement. Not repairing these can cause damage to the driveshaft center support bearing, or, in the worst case scenario, damage to the transmission or differential.

Due to the size and material used on the brakes of these vehicles, the brakes may start to squeak around the 50 percent wear point. The brake rotor surfaces become uneven, causing a lip to form at the outer edge of the rotor. Because of this, the rotors are usually replaced when the pads are worn (pad life varies depending on driving style and terrain).

It is not uncommon to encounter premature failure of the anti-lock brake system (ABS) modulator assembly due to dirty brake fluid. Our technicians recommend flushing the brake fluid every two years in order to help prevent this problem.

See More Problems 3

do I have to press the brake pedal for my car to start? Am I having problems with my key fob sending a start signal to the engine?

Just noticed this yesterday. My car will not go into sports mode...only comfort. I've tried pressing the button and nothing happens. What could be the problem? I like the sports mode and feel im being cheated not being able to drive in sports mode.

See More Questions 65

Due to a manufacturing defect, a crack can develop on the fuel filter when the vehicle is operated in high temperatures. This crack can result in a fuel leak, increasing the risk of a fire. Dealers will replace the fuel filter to correct this concern.

Mercedes Benz is recalling 2010 C-Class, model 204; E-Class, model 212; and 2010–2011 E-Class Coupe/Cabriolet, model 207 vehicles due to a loss of power steering fluid that could result in power steering system failure. Owners may not have sufficient control of the vehicle in areas like parking lots, thus increasing the chance of a crash. Dealers will check and re-torque the connection fitting, free of charge.

The rear outer seat belts may not latch correctly when used with certain child safety seats, increasing the risk of injury in the event of a crash. Dealers will replace the affected seat belts. This recall is expected to begin on November 19, 2007. The Mercedes-Benz recall number is 2007-100002.

See More Recalls 3

Wish I had bought a Ford. This thing is never in working order. Never out of the shop. Now having check engine lights constantly. Dealership charges $121.00 to do what O'Reilly's does for free. Every day I pray a Ford drops in my lap.

Wonderful car not one single problem. All I have done is the regular maintenace.

The Mercedes C300 is a solid, comfortable, and capable car. Hate the tire pressure monitor, but only because it's accurate. I have had problems with the lights that I shouldn't, so that's not great reliability for a new car. The interior trim does look and feel cheap in places, and I'm not convinced it's well made.

See More Reviews 14