Mercedes-Benz C300 Repair and Maintenance

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

Mercedes-Benz C300 Problems

Cracked Driveshaft Flex Discs May Cause Driveshaft Movement/Vibration

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.

Flush Brake Fluid Every Two Years

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.

B-Class B-180 Fuel Gauge shows incorrect value as if blocked

The Problem:
Diesel Fuel Gauge shows (same) incorrect value when switched on as if blocked.
Even after filling the tank, it still continued to show in my case 3/4 full.
All digital Fuel Consumption Values showed nonsensical values.
Apart from long distance journeys, I never knew how much fuel was still actually in my tank.

My Fast Solution:
A Combi Instrument Display Reset triggered by simply removing and replacing the

Co...

See More Problems (4)

Mercedes-Benz C300 Questions

Engine malfunction indicator On. Diagnostic code PO456. Some time it noticed that fuel dripping right rear tire area and sometime smell gasoline out side of car. how can I fix? (1 answer)

need to know the symptoms of air in brake lines on a 2011 C300 mercedes benz 3.0 luxury sedan? (1 answer)

the other day i was driving my car when from anywhere the brake pedal gets really heavy to stop the car, it does not goes down to stop the car fast three hours later it was fine. We have been serve the car for a problem in the front suspension where they supposed to remove front rotors and brakes...

What is the causes of check engine light to come on? (1 answer)

The engine operates fine and the car still runs well.

See More Questions (78)

Mercedes-Benz C300 Recalls

Glass Sunroof Detaches From Vehicle

The panoramic sunroof glass may not be properly bonded to the vehicle, and may detach and fall while driving. Dealers will inspect the bonding of the rear sunroof glass panel and replace it as necessary free of charge to resolve the concern.

Driver's Frontal Air Bag Inflator Ruptures And Sprays Metal Fragments

The driver's frontal air bag inflator may deploy the air bag with excessive pressure, resulting in the inflator rupturing and causing metal debris to be sprayed onto vehicle occupants. Dealers will replace the driver's frontal air bag module free of charge to resolve the concern.

Air Bags Unexpectedly Deploy Or Do Not Function When Needed

The air bag control unit may corrode and cause it to malfunction, resulting in air bags that deploy when not intended, or do not deploy at all in an accident. Dealers will inspect and replace the air bag control unit as needed free of charge to resolve the concern.

See More Recalls (7)

Mercedes-Benz C300 Reviews

Traded wife's BMW 328 for a 2010 C300 with 24000 miles. Have had it 8 months. It has been back to Mercedes 3 times with loss of all power steering fluid, twice in last two weeks. Dealership can't fix problem and charge $300 - $450 each time. Not enough dealerships in the Nashville area to service cars they sell. Impossible to schedule service times unless the vehicle is towed in. First and...
I bought my 2009 C300 Sport new and now at over 6 years and 66K Mi it's been a reliable and enjoyable car. I had a faulty xenon headlight, a few rattles, AC stink that requited a few cleanings, and a noisy belt tensioner fixed under warranty...pretty minor things and otherwise still on the original battery and brakes. It drives like new and I hope to keep it for at least another 6 years. The...
Love the car. 52,000 miles and rear brakes are just needing replacement. Minor issues with maintenance warning message that was solved by replacing sensor in driver's seat belt buckle, otherwise never a problem. Only complaint to this "luxury sports" vehicle is wishing for a bit more than stock 228 HP. Am trading for CPO 2103 to solve that issue.

See More Reviews (14)