Mercedes-Benz C204.9 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
18 owner complaints analyzed
0 distinct recall campaigns
59,000 mi median reported failure mileage
Scope: 2011 to 2014 model years. Data snapshot: . 13 complaints include usable failure mileage.
This selection has limited data. It remains available for lookup but is excluded from search indexing.
Most common problems
Electrical System is the most frequently named component, appearing in 5 of 18 complaints (27.8%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Steering behavior | 4 | 22.2% |
| Engine operation | 2 | 11.1% |
| Fuel system concerns | 2 | 11.1% |
| Braking behavior | 1 | 5.6% |
| Electrical and battery issues | 1 | 5.6% |
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 |
|---|---|
| Electrical System | 5 |
| Engine | 4 |
| Steering | 4 |
| Air Bags | 3 |
| Fuel/Propulsion System | 3 |
| Vehicle Speed Control | 2 |
| Electronic Stability Control (Esc) | 1 |
| Structure:Body | 1 |
Electrical System: 5; Engine: 4; Steering: 4; Air Bags: 3; Fuel/Propulsion System: 3; Vehicle Speed Control: 2; Electronic Stability Control (Esc): 1; Structure:Body: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 0 |
| 25,000 to 49,999 | 4 |
| 50,000 to 74,999 | 5 |
| 75,000 to 99,999 | 1 |
| 100,000 to 149,999 | 3 |
| 150,000 and above | 0 |
Under 25,000: 0; 25,000 to 49,999: 4; 50,000 to 74,999: 5; 75,000 to 99,999: 1; 100,000 to 149,999: 3; 150,000 and above: 0
50,000 to 74,999 miles has the most reports with usable mileage (5). 5 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 |
|---|---|
| 2020 | 18 |
2020: 18
Pattern summary
Electrical System leads the component reports. Steering behavior appears in 4 complaint narratives. Engine operation appears in 2 complaint narratives. Fuel system concerns appears in 2 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 11351943 · 2020-08-29 (August 29, 2020)
MY VEHICLE AND MANY OTHER MERCEDES BENZ MODELS SUFFER A FAILED ELECTRONIC IGNITION SWITCH AND ELECTRONIC STEERING LOCK. THIS IS A KNOWN DEFECT AMONGST MANY MODELS/YEARS OF MERCEDES BENZ VEHICLES AND ONLY A DEALER CAN REPAIR. THE COST OF REPAIR IS $1,900. THE CAUSES THE VEHICLES TO BE UNABLE TO START, AND VERY CLEARLY, A MANUFACTURER DEFECT.
Owner-reported narrative. Look up ODI 11351943 at NHTSA ↗
Owner report 11322976 · 2020-05-01 (May 1, 2020)
ELECTRONIC STEERING LOCK SYSTEM FAILS IN EVERY MERCEDES BENZ ITS A DEFECTIVE PART.
Owner-reported narrative. Look up ODI 11322976 at NHTSA ↗
Owner report 11321521 · 2020-04-18 (April 18, 2020)
CHECK ENGINE LIGHT CODE P0002. ACCELERATING IN ANY FORM FROM THE STREET OR ESPECIALLY THE HIGHWAY MERGING ON, THERE IS A SUPERIOR LOSS OF POWER/ACCELERATION. VERY DANGEROUS AS YOU ARE A HAZARD COMING INTO THE HIGHWAY AND DO NOT HAVE ADEQUATE ACCELERATION WHEN ON RAMPS ARE A VERY SHORT DISTANCE. I BELIEVE IT'S THE HIGH PRESSURE FUEL PUMP AS COUNTLESS OTHERS HAVE HAD THE SAME ISSUE WITH THEIR VEHICLE.
Owner-reported narrative. 60,000 miles reported. Look up ODI 11321521 at NHTSA ↗
Owner report 11360324 · 2020-09-21 (September 21, 2020)
SUDDEN LOSS OF POWER WHILE TRYING TO ACCELERATE,ENGINE LIGHT COMES ON AND CAR GOES INTO LIMP MODE. CODE P002. CAR HAS 44450 MILES.
Owner-reported narrative. 44,450 miles reported. Look up ODI 11360324 at NHTSA ↗
Owner report 11361914 · 2020-09-29 (September 29, 2020)
STOPPED AT GAS STATION TO GET GAS FOR CAR AS SOON I WAS PUMPING GAS I CAN SMELL & SEE GAS FALLING ON THE FLOOR RIGHT BY THE BACK PASSENGER REAR TIRE. WAITED FOR DRY UP. THEN WENT HOME PARKED CAR CAME BACK OUT SAW A PUDDLE OF GAS WAITED FOR DRY UP. WENT UNDERNEATH AND SAW THE RESIDUE THAT IT HAD LEFT BEHIND AND IT LOOK LIKE IT WAS CRACK FROM THE GAS TANK.
Owner-reported narrative. Look up ODI 11361914 at NHTSA ↗
Owner report 11344308 · 2020-08-10 (August 10, 2020)
MY VEHICLE STARTED TO PULL LEFT WHEN BRAKING. HAD ALL BRAKES REPLACED AND PULLING CONITNUED. AFTER FURTHER REVIEW, FOUND OUT THAT THE REAR CROSSMEMBER / SUB-FRAME WAS ROTTED ON THE DRIVER SIDE. WHEN BRAKING, THE REAR DRIVER SIDE WHEEL SHIFTS. YOU CAN SEE THE REAR CALIPER MOVE UP. THE PROBLEM IS THAT THE SUBFRAME IS SO ROTTED THAT IT SHIFTS THE ARMS COMING OFF OF IT (EITHER TRAILING OR TORQUE ARM), CAUSING A DANGEROUS SHIFT IN THE BRAKE/WHEEL. CALLED MERCEDES CUSTOMER SUPPORT AND ALL THEY OFFERED WAS A SMALL DISCOUNT ON THE FULL REPAIR COST, WH…
Owner-reported narrative. 45,000 miles reported. Look up ODI 11344308 at NHTSA ↗
Owner report 11319960 · 2020-04-01 (April 1, 2020)
VEHICLE WAS STOLEN IN FLORIDA I PURCHASED IT AFTER BEING FIXED AND THEY STATED THAT THERE WHERE ELECTRICAL ISSUES AFTER STARTING THE VEHICLE AND LIGHTS PERTAINING TO AIRBAGS WOULD FLASH. AFRAID BAGS WOULD GO OFF WHILE DRIVING AND CAUSE ACCIDENT.
Owner-reported narrative. 32,659 miles reported. Look up ODI 11319960 at NHTSA ↗
Recalls by model year
All campaigns in the snapshot affecting each model year, including recalls announced years later.
Recall campaigns
Shared campaigns appear once in each affected model year.
| Category | Count |
|---|---|
| 2011 | 0 |
| 2012 | 0 |
| 2013 | 0 |
| 2014 | 0 |
2011: 0; 2012: 0; 2013: 0; 2014: 0