Mercedes-Benz C 300 engine problems
22 complaint narratives mention engine terms.
Key facts
490 owner complaints analyzed
46 distinct recall campaigns
26,876 mi median reported failure mileage
Scope: 2017 to 2026 model years. Data snapshot: . 130 complaints include usable failure mileage.
Engine operation evidence
22 of 490 complaints match this topic (4.5%). The keyword filter can include complaints that mention a transmission without reporting its failure. View matching rules.
Owner report 11282140 · 2019-11-25 (November 25, 2019)
THE 2017 MERCEDES-BENZ C300 VEHICLE SUFFERED A COMPLETE LOSS OF POWER/ELECTRICS WHILE IN MOTION AT SPEED AND IN TRAFFIC, CAUSING THE VEHICLE TO UNEXPECTEDLY STOP ON TWO SEPARATE OCCASIONS. THE LOSS OF ALL ELECTRICAL SUPPLY LEAVES THE VEHICLE IMMOBILE, WITHOUT WARNING INDICATORS AND CANNOT BE MOVED. THE FIRST INCIDENT WAS AROUND 5PM IN A BUSY ROAD JUNCTION IN THE DARK, WITH LIMITED LIGHTING. AS THE VEHICLE IS BLACK COLORED IT IT IS DIFFICULT TO SEE IN THESE CIRCUMSTANCES. THE SECOND INCIDENT WAS AT ANOTHER BUSY ROAD JUNCTION IN HEAVY TRAFFIC, AT…
Owner-reported narrative. 20,000 miles reported. Look up ODI 11282140 at NHTSA ↗
Owner report 11402743 · 2021-03-13 (March 13, 2021)
WHEN THE CAR IS IN THE A FEATURE, WHERE IT TURNS ON AND OFF WHEN NOT IN MOTION, IT GETS STUCK IN THAT MODE AS IF A MAGNET IS HOLDING IT IN THAT POSITION. IT WILL NOT MOVE, IT STALLS. I TURN IT OFF AND TURN IT BACK ON AND SOMETIMES IT STILL WILL NOT MOVE, SOMETIMES, IT WILL NOT TURN BACK ON. THIS HAS HAPPENED ON SEVERAL DIFFERENT OCCASIONS. ONCE, I PULLED TO THE SIDE OF MY MAILBOX TO PICK UP MAIL, AND ANOTHER OCCASION I PULLED INTO MY GARAGE, AND IT STOPPED, AND WOULD NOT TURN ON. THIS IS VERY DANGEROUS, I WOULD HATE TO BE IN TRAFFIC, RAILWAY CR…
Owner-reported narrative. 36,000 miles reported. Look up ODI 11402743 at NHTSA ↗
Owner report 11482136 · 2022-08-31 (August 31, 2022)
My car leaked oil very fast while me & my wife were on a trip and it stopped on the highway and engine was stalling and misfiring due to a manufacture defect that is common with this model so it did put us in a very dangerous & risky situation. Now after i paid $1,740 the dealer is saying that my car needs a new engine due to cracked piston in cylinder 1 that damaged the engine which is a common problem with this model around the 50k miles.
Owner-reported narrative. Look up ODI 11482136 at NHTSA ↗
Owner report 11488094 · 2022-10-05 (October 5, 2022)
The contact owns a 2017 Mercedes-Benz C300. The contact stated while driving 45-50 MPH, the vehicle stalled inadvertently and would not exceed 3 MPH. There was no warning light illuminated. The contact was unable to veer to the side of the roadway. The contact turned on the hazard lights. The contact turned off and restarted the vehicle however, the vehicle would not exceed 5 MPH and was making abnormal sounds. The contact veered to the side of the road for approximately 4 hours until there was no longer traffic on the roadway. The contact proc…
Owner-reported narrative. 29,650 miles reported. Look up ODI 11488094 at NHTSA ↗
Owner report 11497145 · 2022-12-12 (December 12, 2022)
Most M274 engines have P06DA00 fault code internally. Harness for oil pressure regulating solenoid valve is short/open inside the engine oil pan. It can cause excessive oil pressure and premature oil pump failure. As the broken wire is sunken in the engine oil, I worry if it can cause fire. If the oil pump fair during driving prematurely, engine can be stalled. Mercedes-Benz knew the issue but they decided to ignore it.
Owner-reported narrative. Look up ODI 11497145 at NHTSA ↗