2004 Mercedes-Benz C-Class Engine
Owner-reported problems and safety issues filed with NHTSA. Review common failures, severity levels, and complaint trends over time.
Complaint Timeline
Chronological view of owner reports
TL* THE CONTACT OWNS A 2004 MERCEDES BENZ C230. WHILE STARTING THE VEHICLE, THERE WAS A KNOCKING SOUND COMING FROM THE ENGINE COMPARTMENT AND THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO A DEALER WHO DIAGNOSED THAT IF THE SOUND BECAME PROGRESSIVELY WORSE, THE INTAKE AND EXHAUST CAM SHAFT ADJUSTER, THE CENTER BOLTS FOR THE CAM SHAFT, AND THE CHAIN TENSIONER WOULD NEED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE RECURRED ON NUMEROUS OCCASIONS. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 59,000.
ENGINE STALLED WHILE WAITING FOR A LEFT TURN. HAVE A QUARTER TANK OF GAS. CHECK ENGINE LIGHT WAS ON. FAULT LIGHT DID NOT COME ON. CAR WAS PUSHED WHILE IN NEUTRAL BUT BREAKS DID NOT FUNCTION. ALMOST HIT A PARKED CAR. THIS IS THE SECOND TIME OF OCCURRENCE. REPAIR IS MORE THAN $1000. MECHANIC FOUND MOTOR OIL LEAKING ON ENGINE PARTS. IN 2003 ENGINE STALLED WHILE I WAS DRIVING ON A FWY. REPAIR WAS A FEW THOUSAND DOLLARS. *TR
TL* THE CONTACT OWNS A 2004 MERCEDES BENZ C320. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE VEHICLE STALLED WITHOUT WARNING. THE CONTACT MENTIONED THAT THE FAILURE OCCURRED SEVERAL TIMES. THE VEHICLE WAS TAKEN TO THE DEALER. THE TECHNICIAN WAS UNABLE TO DIAGNOSE THE FAILURE. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE VIN WAS UNAVAILABLE. THE FAILURE MILEAGE WAS 1,000 AND THE CURRENT MILEAGE WAS 109,000. *TR
TL*THE CONTACT OWNS A 2004 MERCEDES BENZ C230. THE CONTACT STATED THAT THE ENGINE OIL WAS LEAKING ONTO THE O2 SENSOR. THE O2 SENSORS WERE PLACED AUGUST 2009 BY THE DEALER; THE PROBLEM WAS NOT CORRECTED. THE ENGINE OIL BEGAN LEAKING ON THE SENSORS AGAIN SO THE VEHICLE WAS TAKEN BACK TO THE DEALER WHERE THE CONTACT WAS INFORMED THAT THE CAMSHAFT, WIRING HARNESS AND O2 SENSORS NEEDED TO BE REPLACED. THE CONTACT CALLED THE MANUFACTURER WHO OFFERED NO ASSISTANCE. THE VEHICLE HAD NOT BEEN REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 44,600 AND THE CURRENT MILEAGE WAS APPROXIMATELY 71,000.
RE: C 240 MERCEDES 2004. THE CAR WILL SUDDENLY CUT OFF WHILE DRIVING. THIS HAS HAPPENED ON LONG DRIVES ON THE INTERSTATE, SHORT DRIVES ON THE INTERSTATE, AND STREET DRIVING. THE MECHANIC CANNOT FIND ANY CODES ASSOCIATED WITH THIS DEFECT. WE HAD THE CRANK SENSOR CHANGED BECAUSE THE MECHANIC THOUGHT THAT A WORN CRANK SENSOR MIGHT BE THE CAUSE. IT WAS NOT. TWO DAYS LATER THE CAR 'S ENGINE SHUT DOWN AGAIN. *TR
THIS IS A 2004 MERCEDES C230. CHECK ENGINE LIGHT WENT ON. I WENT TO DEALER WITHIN 5 MILES OF WARNING LIGHT COMING ON. I WAS TOLD THAT THERE WAS AN OIL LEAK AND THAT IT HAD DRIPPED OVER SEVERAL COMPONENTS AND THE WIRING HARNESS. I WOULD COST $3,500 TO REPAIR BUT THEY ABSORBED THE LABOR COST AND IT SHOULD COST ABOUT $2,000. I HAVE NEVER MISSED A MAINTENANCE ON THIS CAR. THEY SAID THE THIS HAPPENS BECAUSE OF WHERE THE O2 SENSOR THAT LEAKED IS. IT SEEMS ODD TO HAVE MINOR ISSUE CAUSE SUCH ENORMOUS DAMAGE. *TR
MERCEDES BENZ C230 KOMPRESSOR SPORT SEDAN BEGAN TO LEAK OIL INTO THE CAM MAGNET SENSOR WHICH LEAD TO THE FAILURE OF THE ENGINE WIRING HARNESS, COSTING HUNDREDS OF DOLLARS TO REPLACE. MB HAS KNOWN OF THIS PROBLEM IN THE 111 AND 271 SERIES OF ENGINE FOR MANY YEARS. COSTING THE CONSUMER HUGE AMOUNTS OF MONEY FOR A PROBLEM THEY HAVE KNOWN ABOUT. NO PROBLEMS WITH THE CAR FLAKING OR SHOWING SIGNS OF LEAKING OIL UNTIL ITS TOO LATE. *TR
WILE DRIVING, THE CONSUMER NOTICED STEAM COMING FROM THE HOOD AND BLACK SMOKE COMING FROM THE BACK OF THE VEHICLE. THE VEHICLE STALLED. THE DRIVER TRIED TO RESTART THE VEHICLE ,BUT WAS UNABLE TO DO SO. THE CONSUMER HAD THE VEHICLE TOWED TO THE DEALER FOR INSPECTION. THE MECHANIC WAS UNABLE TO DUPLICATE THE PROBLEM. PLEASE FILL IN ADDITIONAL INFORMATION. *JB
WHILE DRIVING CONSUMER NOTICED STEAM COMING FROM UNDERNEATH THE VEHICLE. CONSUMER WAS ABLE TO PULL OVER TO SHOULDER, LIFTED UP THE HOOD, AND SMOKE CAME FROM THE ENGINE. CONSUMER HAD THE VEHICLE TOWED TO THE DEALER FOR INSPECTION. *AK
Trend Over Time
Complaints by year
Other Issues
Common problems reported
Quick Summary
The 2004 Mercedes-Benz C-Class has 9 Engine complaints on file. Review the timeline above for detailed owner experiences.