Total Complaints
15 filings
MERCEDES-BENZ C63 · model year
15 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2009MERCEDES-BENZC63 carries 15 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 3 fires, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2009 C63 is electrical system with 4 filings, followed by air bags (4) and exterior lighting (2). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 15 investigation files overlapping the 2009 C63. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
Total Complaints
15 filings
Crashes Reported
0 reports
Source
NHTSA ODI
Federal complaints database
At or below the fleet median complaint volume.
| Component | Count |
|---|---|
| ELECTRICAL SYSTEM | 4 |
| AIR BAGS | 4 |
| EXTERIOR LIGHTING | 2 |
| ENGINE | 2 |
| SERVICE BRAKES | 1 |
| ENGINE AND ENGINE COOLING | 1 |
| VISIBILITY/WIPER | 1 |
Glass sunroof While driving, heard a loud bang/pop, glass sunroof began to shatter, and fall onto me, creating a unsafe conditions. Pulled over immediately and closed plastic sunshade to prevent entire glass window from collapsing on top of me. Particles of glass and finite glass dust covered interior, and my person. Reported to local police dept, took photographs, and awaiting to contact dealership, insurance co as this occurred on a holiday weekend. No previous defects observed car is pristine. No roadway defects, or other environmental factors as causation.
TL* TAKATA RECALL. THE CONTACT OWNS A 2009 MERCEDES-BENZ C63. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 16V081000 (AIR BAGS). THE DEALER (MERCEDES-BENZ OF CALABASAS, 24181 CALABASAS RD, CALABASAS, CA 91302, 855-744-2458) WAS CONTACTED AND CONFIRMED THAT PARTS WERE NOT AVAILABLE. THE MANUFACTURER WAS NOT NOTIFIED. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE. **TR CONSUMER STATED DRIVER SIDE AND PASSENGER SIDE AIR BAGS AFFECTED. UPDATED 11/1/18*JB
TL* TAKATA RECALL. THE CONTACT OWNS A 2009 MERCEDES-BENZ C63. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBERS: 16V363000 (AIR BAGS) AND 16V081000 (AIR BAGS); HOWEVER, THE PARTS TO REMEDY THE RECALL WERE NOT AVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIRS. MERCEDES-BENZ OF PALM BEACH (4000 OKEECHOBEE BLVD, WEST PALM BEACH, FL 33409, (561) 689-6363) WAS CONTACTED AND CONFIRMED THAT THE PARTS WERE NOT AVAILABLE. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.
TL* TAKATA RECALL. THE CONTACT OWNS A 2009 MERCEDES-BENZ C63. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBERS: 16V363000 (AIR BAGS) AND 16V081000 (AIR BAGS); HOWEVER, THE PARTS NEEDED FOR THE REPAIRS WERE NOT AVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIRS. THE CONTACT CALLED MERCEDES-BENZ OF BUCKHEAD AT (800) 399-3804 (2799 PIEDMONT RD NE, ATLANTA, GA 30305) WHERE IT WAS CONFIRMED THAT PARTS WERE NOT AVAILABLE. THE MANUFACTURER WAS NOT CONTACTED. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.
ELECTRONIC STEERING LOCK FAILURE COMMON PROBLEM
TL* TAKATA RECALL. THE CONTACT OWNS A 2009 MERCEDES-BENZ C63. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBERS: 16V081000 (AIR BAGS) AND 16V363000 (AIR BAGS); HOWEVER, THE PARTS TO DO THE RECALL REPAIRS WERE UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIRS. THE MANUFACTURER WAS AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.
CEL ILLUMINATION, ENGINE MISFIRE, STALLING, ROUGH RUNNING, LOW COOLANT INDICATOR LIGHT UPS. NO EXTERNAL COOLANT LOSS DETECTABLE. COOLANT IN THE ENGINE OIL AND/OR IN THE COMBUSTION CHAMBER. THIS IS CAUSED BY A BROKEN CYLINDER HEAD BOLT. ENGINE COOLANT ENTERS INTO ENGINE OIL. COOLANT MIGHT BE PRESENT IN THE COMBUSTION CHAMBER. AFFECTED ENGINE NUMBER UP TO 1569XX 60 060658. NOW THE DEALERSHIP IS TRYING TO CHARGE ME $7K TO HAVE THIS FIXED WHEN IT'S A KNOWN ISSUE ON THESE VEHICLES. I RESPECTFULLY DEMAND THAT MERCEDES BENZ USA COVER THE COSTS AND RECALL THESE AFFECTED BOLTS ASAP.
Mileage: 45,000
AS I WAS DRIVING I HAD A LIGHT COME ON MY DASH TELLING ME I HAD LOW COOLANT AND THAT I NEEDED TO HAVE IT FILLED. THIS HAS HAPPENED A NUMBER OF TIMES SINCE MY SHORT OWNERSHIP OF THIS VEHICLE. FROM WHAT I UNDERSTAND THIS IS A SEALED UNIT AND SHOULD NOT BE LOSING ANTIFREEZE ANYWHERE. I HAD THE VEHICLE LOOKED AT AND I DO NOT HAVE ANY LEAKS WHATSOEVER. WHEN I ADD THE COOLANT, IT SEEMS TO BE FAIRLY LOW. I AM CONCERNED THAT I MAY HAVE SOME BIG ISSUES ON MY HANDS AND COULD POTENTIALLY HAVE A HYDRO-LOCKING OF THE ENGINE PROBLEM CREATING A MAJOR SAFETY ISSUE LEADING TO A CRASH. AFTER A BIT OF RESEARCH I AM FINDING THAT THE MB C63 HAS "HEAD BOLT" ISSUES LEADING TO THE LOSS OF COOLANT AND ENGINES BLOWING UP AND OR HYDRO-LOCKING. I FEAR THIS ISSUE MAY HAPPEN TO ME AND WOULD REALLY APPRECIATE THIS BEING LOOKED INTO AS I FEEL MB HAS A CERTAIN AMOUNT OF RESPONSIBILITY HERE WITH REGARDS TO THE SAFETY OF THEIR PATRONS. THANK YOU FOR HEARING ME. *TT
Mileage: 42,000
THE VEHICLE EXPERIENCED A HEADBOLT FAILURE RESULTING IN COOLANT FLOODING ONE OF THE CYLINDER, LEAKING INSIDE THE ENGINE AND CAUSING ENGINE FAILURE. I WAS LUCKY THAT I WAS DRIVING AT 20MPH AT THE TIME OF THE FAILURE, OTHERWISE IT WOULD MOST LIKELY RESULT IN A CRASH. MERCEDES-BENZ USA DENIES THE WIDESPREAD NATURE OF THE PROBLEM AFFECTING ALL OF THE M156 ENGINES, EVEN THROUGH IN 2010 MERCEDES-BENZ ISSUED A SERVICE BULLETIN DIRECTING REPLACEMENT OF THE HEADBOLTS WITH THE NEW IMPROVED DESIGN AND I PERSONALLY KNOW 3 OTHER OWNERS WHOSE VEHICLE EXPERIENCED EXACTLY THE SAME PROBLEM. MERCEDES-BENZ WOULD NOT RECALL THE AFFECTED ENGINES AS IT WOULD COST THEM MILLIONS OF DOLLARS, INSTEAD THEY CHOSE TO PUT THE CONSUMERS AT RISK AND HAVE THE CONSUMERS COVER THE REPAIR COST AS THE FAILURE TENDS TO HAPPEN SHORTLY AFTER THE BASE WARRANTY EXPIRES. *JS
Mileage: 43,639
BROWN WIRE IN LEFT TAIL LIGHT CONNECTOR MELTED THROUGH THE CONNECTOR AND TAIL LIGHT FAILED TO OPERATE, INCLUDING TURN SIGNAL. *TR
Mileage: 51,000
BROWN WIRE IN LEFT TAIL LIGHT CONNECTOR MELTED THROUGH THE CONNECTOR AND TAIL LIGHT FAILED TO OPERATE, INCLUDING TURN SIGNAL. *TR
Mileage: 51,000
REAR TAIL LIGHT WIRING HAS BURNT UP CAUSING FAILURE OF THE TAILLIGHT. THIS HAPPENED ON BOTH SIDES OF THE VEHICLE. THE RIGHT SIDE ACTUALLY BEGAN PUTTING OUT SMOKE WHEN THE BURNT CONNECTOR FAILED. THIS FIRE COULD HAVE SPREAD WITH MY KIDS IN THE CAR. *TR
Mileage: 23,000
REAR TAIL LIGHT WIRING HAS BURNT UP CAUSING FAILURE OF THE TAILLIGHT. THIS HAPPENED ON BOTH SIDES OF THE VEHICLE. THE RIGHT SIDE ACTUALLY BEGAN PUTTING OUT SMOKE WHEN THE BURNT CONNECTOR FAILED. THIS FIRE COULD HAVE SPREAD WITH MY KIDS IN THE CAR. *TR
Mileage: 23,000
REAR TAIL LIGHT WIRING HAS BURNT UP CAUSING FAILURE OF THE TAILLIGHT. THIS HAPPENED ON BOTH SIDES OF THE VEHICLE. THE RIGHT SIDE ACTUALLY BEGAN PUTTING OUT SMOKE WHEN THE BURNT CONNECTOR FAILED. THIS FIRE COULD HAVE SPREAD WITH MY KIDS IN THE CAR. *TR
Mileage: 23,000
CAR DASH DISPLAY INDICATED TO CHECK RIGHT REAR TURN LAMP. WHILE CHECKING THE LAMP, THE LAMP HOLDER ASSEMBLY WAS HOT. WHEN ATTEMPTING TO UNPLUG THE ELECTRICAL CONNECTOR TO THE LAMP HOLDER ASSEMBLY, DISCOVERED THAT THE ELECTRICAL CONNECTOR WAS MELTING (SPECIFICALLY AROUND THE GROUND WIRE). THERE SEEM TO BE OTHER REPORTS OF THIS ISSUE ON WEB FORUMS (E.G. MB WORLD). *TR
Mileage: 40,000
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.