2008 Mercedes Benz C300 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
672 owner complaints analyzed
7 distinct recall campaigns
78,890 mi median reported failure mileage
Scope: 2008 model year. Data snapshot: . 410 complaints include usable failure mileage.
Most common problems
Air Bags is the most frequently named component, appearing in 270 of 672 complaints (40.2%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Steering behavior | 143 | 21.3% |
| Electrical and battery issues | 110 | 16.4% |
| Braking behavior | 54 | 8.0% |
| Transmission and shifting | 11 | 1.6% |
| Engine operation | 9 | 1.3% |
| Fuel system concerns | 2 | 0.3% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Air Bags | 270 |
| Electrical System | 222 |
| Steering | 133 |
| Exterior Lighting | 102 |
| Unknown Or Other | 38 |
| Engine | 31 |
| Seat Belts | 21 |
| Electronic Stability Control (Esc) | 17 |
Air Bags: 270; Electrical System: 222; Steering: 133; Exterior Lighting: 102; Unknown Or Other: 38; Engine: 31; Seat Belts: 21; Electronic Stability Control (Esc): 17
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 24 |
| 25,000 to 49,999 | 38 |
| 50,000 to 74,999 | 124 |
| 75,000 to 99,999 | 116 |
| 100,000 to 149,999 | 83 |
| 150,000 and above | 25 |
Under 25,000: 24; 25,000 to 49,999: 38; 50,000 to 74,999: 124; 75,000 to 99,999: 116; 100,000 to 149,999: 83; 150,000 and above: 25
50,000 to 74,999 miles has the most reports with usable mileage (124). 262 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2008 | 4 |
| 2009 | 4 |
| 2010 | 8 |
| 2011 | 3 |
| 2012 | 5 |
| 2013 | 54 |
| 2014 | 96 |
| 2015 | 79 |
| 2016 | 119 |
| 2017 | 139 |
| 2018 | 83 |
| 2019 | 18 |
| 2020 | 10 |
| 2021 | 8 |
| 2022 | 15 |
| 2023 | 9 |
| 2024 | 8 |
| 2025 | 10 |
2008: 4; 2009: 4; 2010: 8; 2011: 3; 2012: 5; 2013: 54; 2014: 96; 2015: 79; 2016: 119; 2017: 139; 2018: 83; 2019: 18; 2020: 10; 2021: 8; 2022: 15; 2023: 9; 2024: 8; 2025: 10
Pattern summary
Air Bags leads the component reports. Steering behavior appears in 143 complaint narratives. Electrical and battery issues appears in 110 complaint narratives. Braking behavior appears in 54 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 10311679 · 2010-02-18 (February 18, 2010)
TL*THE CONTACT OWNS A 2008 MERCEDES BENZ C300. THE CONTACT STATED THAT HE WAS INVOLVED IN A FRONTAL CRASH BUT HIS AIR BAGS DID NOT DEPLOY. SINCE THE AIR BAGS DID NOT DEPLOY, HIS BODY HIT THE STEERING WHEEL WHICH CAUSED THE STEERING COLUMN TO BREAK. THE CONTACT WAS SUSTAINED INJURIES TO HIS HEAD AND CHEST. A POLICE REPORT WAS TAKEN AT THE SCENE. HE CALLED THE DEALERSHIP AND WAS INSTRUCTED TO CALL THE MANUFACTURER. THE MANUFACTURER SENT A REPRESENTATIVE TO INSPECT THE VEHICLE; THE REPRESENTATIVE STATED THAT THERE WAS NOTHING WRONG WITH THE VEHICL…
Owner-reported narrative. 20,000 miles reported. Look up ODI 10311679 at NHTSA ↗
Owner report 10459294 · 2012-05-22 (May 22, 2012)
TL* THE CONTACT OWNS A 2008 MERCEDES C300. THE CONTACT STATED THAT WHILE ATTEMPTING TO START THE ENGINE, THE THE VEHICLE STALLED. THE VEHICLE WAS TOWED TO THE DEALER WHERE THE DEALER INFORMED HER THAT THERE WAS A STEERING WHEEL LOCK FAILURE. THE VEHICLE WAS REPAIRED UNDER WARRANTY BUT THE FAILURE RECURRED LATER AFTER THE WARRANTY HAD EXPIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 7500.
Owner-reported narrative. 7,500 miles reported. Look up ODI 10459294 at NHTSA ↗
Owner report 10333976 · 2010-05-31 (May 31, 2010)
TWO SEPARATE INSTANCES OF COMMANDED ACCELERATION WITH 2008 MERCEDES C300. PURCHASED THE CAR FROM A PRIVATE USED CAR DEALER IN SEPTEMBER 2009 WITH 10,500 MILES. ON NOVEMBER 1, 2009 I EXPERIENCED FIRST INSTANCE OF UNCOMMANDED ACCELERATION WHILE SLOWING TO A STOP IN A DRIVEWAY. ENGINE SUDDENLY ACCELERATED TO A HIGH RATE AND STRUCK A PARKED TRUCK IMMEDIATELY IN FRONT OF CAR. SHIFTED INTO REVERSE AND CAR SPED AT MAXIMUM RPM ACROSS LAWNS AND STREET UNTIL FINALLY RETURNING TO NORMAL. AT NO TIME WERE THE BRAKES ABLE TO HAVE ANY EFFECT ON SLOWING MY …
Owner-reported narrative. 17,330 miles reported. Look up ODI 10333976 at NHTSA ↗
Owner report 10511033 · 2013-05-07 (May 7, 2013)
I RECEIVED MESSAGES ON MY DASH STATING TO CHECK REAR LEFT TURN SIGNAL AND REAR LEFT TAIL/BRAKE LAMPS. UPON PULLING OUT THE REAR LEFT (DRIVER'S SIDE) TAIL LIGHT ASSEMBLY, WHICH HOLDS ALL THE BULBS, I NOTICED THAT THE TAIL LIGHTS WOULD FLASH WHEN I JIGGLED THE WIRES BUT NOT STAY ON. I PULLED THE HARNESS PLUG FROM THE SOCKET ON THE ASSEMBLY HOLDING THE BULBS AND NOTICED A BLACKENED BURNT SPOT AND MELTED PLASTIC ON THE PLUG ITSELF, AND ALSO A BURNT SPOT INSIDE THE PLUG SOCKET WHICH ALMOST BURNED THROUGH THE OTHER SIDE OF THE TAIL LIGHT ASSEMBLY U…
Owner-reported narrative. 86,949 miles reported. Look up ODI 10511033 at NHTSA ↗
Owner report 10266871 · 2009-04-20 (April 20, 2009)
SERIOUS DEFECT OF SUDDEN ACCELERATION IN MERCEDES MODEL C300 YEAR 2008. *NJ THE CONSUMER STATED AS HE WAS ABOUT TO PARK THE VEHICLE, HE RELEASED THE BRAKE PEDAL AND SUDDENLY THE VEHICLE ACCELERATED, WENT OVER A CONCRETE BARRIER AND HIT THE WALL OF THE BUILDING FINALLY COMING TO REST. THE CONSUMER STATED THE VEHICLE WAS A RENTAL. *JB
Owner-reported narrative. Look up ODI 10266871 at NHTSA ↗
Owner report 10304846 · 2010-02-03 (February 3, 2010)
THE TAXI CAB STOPPED UNEXPECTEDLY AND WHEN I APPLIED THE BRAKES, THE CAR DID NOT RESPOND AND THE MOTOR DID NOT DIE, IT JUST KEPT GOING UNTIL I HIT THE OTHER VEHICLE AT 20 OR 25 MILES AN HOUR. I BELIEVE THERE WAS A STRANGE SOUND WITH THE BRAKES THAT I HAD SEVERAL TIMES REPORTED TO THE DEALER SINCE THE CAR WAS PURCHASED NEW. *TR
Owner-reported narrative. 24,000 miles reported. Look up ODI 10304846 at NHTSA ↗
Owner report 10537629 · 2013-08-28 (August 28, 2013)
TL* THE CONTACT OWNS A 2008 MERCEDES BENZ C300. THE CONTACT STATED THAT THE VEHICLE STALLED WHILE DEPRESSING THE ACCELERATOR PEDAL. THE VEHICLE WAS RESTARTED AND FUNCTIONED PROPERLY. THE VEHICLE WAS INSPECTED BY A LOCAL DEALER AND WAS DIAGNOSED WITH HAVING A SHORT IN THE TRANSMISSION COMPUTER. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE. THE APPROXIMATE FAILURE VEHICLE MILEAGE WAS 50,000.
Owner-reported narrative. 50,000 miles reported. Look up ODI 10537629 at NHTSA ↗
Owner report 10547177 · 2013-10-08 (October 8, 2013)
AS REPORTED MULTIPLE TIMES BY OTHERS, TAIL LIGHT CONNECTOR IS INSUFFICIENT TO HANDLE THE HEAT EMANATING FROM THE GROUND (BROWN) WIRE. CONNECTOR BURNS. CABLE COVERING MELTS. ALL TAIL LIGHTS (INCLUDING BRAKES, TURNING AND REVERSE) STOP FUNCTIONING. - SAFETY ISSUE- (NOT TO MENTION GAS TANK SITTING NOT TOO FAR FROM SOURCE OF FIRE) PRELIMINARY SYMPTOMS: RANDOM WARNING MESSAGES IN DASHBOARD ABOUT LIGHTS MALFUNCTIONING. ONE TAIL LIGHT DIMMER THAN THE OTHER. REPAIRS REQUIRED: NEW CONNECTOR/NEW PINS PLUS REGROUNDING TO AVOID CERTAIN RECURRE…
Owner-reported narrative. 36,000 miles reported. Look up ODI 10547177 at NHTSA ↗
Owner report 11139396 · 2018-10-10 (October 10, 2018)
MY 2008 MERCEDES BENZ 300C STARTED THEN SHUT OFF IN MY DRIVEWAY. I HAD THE CAR LESS THAN 30 DAYS FROM PURCHASE. I CALLED THE DEALER AND HE CAME AND DID SOMETHING TO THE FUSE BAND IT START ED. NEXT DAY SAME THING, STARTED THEN SHUT OFF. I HAD IT TOWED TO MY MECHANIC, IT TOOK HIM TWO WEEKS TO FIGURE OUT WHAT WAS WRONG WITH IT. HE NARROWED IT DOWN TO THE IGNITION SWITCH. HOWEVER, HE WANT AUTHORIZED TO ACCESS THE IGNITION, SO IT HAD TO BE TOWED TO THE DEALER. THE DEALER CAME BACK AFTER 2 WEEKS AND SAID IT WAS THE FUEL PUMP. FINE, I PAID A LITTLE…
Owner-reported narrative. 67,574 miles reported. Look up ODI 11139396 at NHTSA ↗