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Mercedes-Benz C 300

Safety Grade: F
360
Total Complaints
31
Crashes
15
Injuries
0
Deaths

Top Issues

ENGINE
64
UNKNOWN OR OTHER
40
ELECTRICAL SYSTEM
38
FUEL/PROPULSION SYSTEM
26
SERVICE BRAKES
20
STEERING
19
FORWARD COLLISION AVOIDANCE: A
17
STRUCTURE:BODY
14
POWER TRAIN
10
AIR BAGS
10

Recent Complaints

2025 MERCEDES-BENZ C 300 — BACK OVER PREVENTION: WARNINGS
After driving the 2025 c300 sedan and leaving it parked for an hour or two, I come back to the car and turn it on. Neither the central screen or drivers screen were operable. The engine, interior lighting, sounds, and other systems were working however all the screens were completely dead. The car h...
2025 MERCEDES-BENZ C 300 — VEHICLE SPEED CONTROL
After driving the 2025 c300 sedan and leaving it parked for an hour or two, I come back to the car and turn it on. Neither the central screen or drivers screen were operable. The engine, interior lighting, sounds, and other systems were working however all the screens were completely dead. The car h...
2025 MERCEDES-BENZ C 300 — ELECTRICAL SYSTEM
After driving the 2025 c300 sedan and leaving it parked for an hour or two, I come back to the car and turn it on. Neither the central screen or drivers screen were operable. The engine, interior lighting, sounds, and other systems were working however all the screens were completely dead. The car h...
2018 MERCEDES-BENZ C 300 — STRUCTURE
The contact's wife owns a 2018 Mercedes-Benz C300. The contact stated that while washing the vehicle, a part of the panoramic roof started moving while depressing the glass. The contact stated that there was water leaking into the vehicle from the glass. Upon investigation, the contact discovered NH...
2025 MERCEDES-BENZ C 300 — SERVICE BRAKES
VEHICLE IS NEW TO ME AS OF JAN 6, 2026. THE BRAKES ARE SPONGY, BUT WHEN THE CAR SHIFTS FROM D3 TO D2, IT RELEASES AND UNLESS I PRESS THE BRAKE AGAIN IT WOULD GLIDE INTO AN INTERSECTION OR INTO THE VEHICLE IN FRONT OF ME. THIS HAS BEEN LOOKED AT BY MY SELLING DEALER THREE TIMES AND ANOTHER DEALER O...
2020 MERCEDES-BENZ C 300 — ENGINE
I am reporting a catastrophic repeat engine failure on my 2020 Mercedes-Benz C300. On October 9, 2025, with 26,589 miles, the vehicle suffered a Cylinder 2 failure (exhaust valves), causing a dangerous loss of power in traffic. I paid $4,100.43 for a $10,000 plus cylinder head replacement at an auth...
2019 MERCEDES-BENZ C 300 — ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER
Odometer Fraud. The contact purchased a 2019 Mercedes-Benz C300. The contact stated that after purchasing the vehicle, it was discovered that there was a mileage discrepancy. The vehicle was a dealer sale. The contact stated that at the time of purchase, the odometer reading was approximately 54,000...
2020 MERCEDES-BENZ C 300 — AIR BAGS
I purchased this vehicle on December 26, 2025 from an authorized Mercedes-Benz dealership. Shortly after the purchase, I discovered an issue related to the airbag system, which indicates a potential safety defect. At the time of purchase and during the test drive, the vehicle was already turned on,...
2019 MERCEDES-BENZ C 300 — ENGINE
While driving on highway, the engine light came on, a diagnostic test was performed by dealer, oil control valve defected) This could cause engine to lock up while driving, a serious safety concern. I contacted Mercedes Benz corporate office seeking help, because of factory defect. They're not assi...
2021 MERCEDES-BENZ C 300 — VISIBILITY:SUN/MOON ROOF ASSEMBLY
I am reporting a safety defect involving the panoramic sunroof on my 2021Mercedes-Benz Coop vehicle. The panoramic sunroof has malfunctioned due to an apparent design or manufacturing defect. The sunroof fails to open / close and makes grinding or popping noises which malfunctioned unexpectedly. Th...

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