Mercedes Benz C350 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
238 owner complaints analyzed
12 distinct recall campaigns
69,452 mi median reported failure mileage
Scope: 2006 to 2009 model years. Data snapshot: . 159 complaints include usable failure mileage.
Most common problems
Air Bags is the most frequently named component, appearing in 79 of 238 complaints (33.2%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Steering behavior | 56 | 23.5% |
| Electrical and battery issues | 42 | 17.6% |
| Braking behavior | 21 | 8.8% |
| Fuel system concerns | 16 | 6.7% |
| Transmission and shifting | 10 | 4.2% |
| Engine operation | 5 | 2.1% |
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 | 79 |
| Electrical System | 67 |
| Steering | 51 |
| Exterior Lighting | 41 |
| Engine | 19 |
| Fuel/Propulsion System | 16 |
| Unknown Or Other | 6 |
| Power Train | 5 |
Air Bags: 79; Electrical System: 67; Steering: 51; Exterior Lighting: 41; Engine: 19; Fuel/Propulsion System: 16; Unknown Or Other: 6; Power Train: 5
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 11 |
| 25,000 to 49,999 | 32 |
| 50,000 to 74,999 | 46 |
| 75,000 to 99,999 | 38 |
| 100,000 to 149,999 | 24 |
| 150,000 and above | 8 |
Under 25,000: 11; 25,000 to 49,999: 32; 50,000 to 74,999: 46; 75,000 to 99,999: 38; 100,000 to 149,999: 24; 150,000 and above: 8
50,000 to 74,999 miles has the most reports with usable mileage (46). 79 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 |
|---|---|
| 2009 | 2 |
| 2011 | 4 |
| 2012 | 1 |
| 2013 | 30 |
| 2014 | 31 |
| 2015 | 36 |
| 2016 | 40 |
| 2017 | 50 |
| 2018 | 28 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 4 |
| 2022 | 5 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 2 |
2009: 2; 2011: 4; 2012: 1; 2013: 30; 2014: 31; 2015: 36; 2016: 40; 2017: 50; 2018: 28; 2019: 1; 2020: 1; 2021: 4; 2022: 5; 2023: 2; 2024: 1; 2025: 2
Pattern summary
Air Bags leads the component reports. Steering behavior appears in 56 complaint narratives. Electrical and battery issues appears in 42 complaint narratives. Braking behavior appears in 21 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 11065782 · 2018-01-30 (January 30, 2018)
EIS AND ESL GO BAD, CAR WILL NOT START DUE TO STEERING WHEEL LOCKING.
Owner-reported narrative. 102,000 miles reported. Look up ODI 11065782 at NHTSA ↗
Owner report 10524932 · 2013-07-15 (July 15, 2013)
MERCEDES C350 2008 52,000 MILES.CAR SUDDENLY WOULD NOT START. LIGHTS WORKED, CONSOLE SCREEN CAME ON, NAVIGATION SCREEN POPPED UP. IT WASN'T BATTERY,NOT BOTH CAR KEYS.CANNOT GET OUT OF PARK,STEERING WHEEL LOCKED. HAD TO TOW TO NEAREST DEALERSHIP 70 MILES AWAY. BAD STEERING WHEEL LOCK (ICM)IGNITION CONTROL REPLACEMENT COST $1500. MECHANIC PRIOR LOOKED AND TRIED ORDERING PART. WOULDN'T SELL IT TO HIM BECAUSE IT WAS SUPPOSABLE A RECALLED PART!? DEALERSHIP SAID NO RECALL OR WARRANTY, OUT OF POCKET. THEN WHEN INFORMED REPAIR DONE, I WAS TOLD COMMAND…
Owner-reported narrative. 52,000 miles reported. Look up ODI 10524932 at NHTSA ↗
Owner report 10525026 · 2013-07-15 (July 15, 2013)
JUST SAW ON THE INTERNET THE INVESTIGATION ON 2008 C350 AND FAULTY BRAKE LIGHTS. EVER SINCE ABOUT 2009-2010 WE'VE BEEN PLAGUED WITH ELECTRICAL PROBLEMS WITH THIS CAR, BUT ALWAYS WE GET WARNINGS ABOUT THE TAIL BRAKE LIGHTS. WE'VE HAD THE CAR TO THE DEALER MULTIPLE TIMES, AND HAVE HAD SEVERAL EXPENSIVE REPAIRS CHANGING OUT BOARDS. STILL....EVERY TIME YOU START THE VEHICLE YOU HAVE TO CLEAR THE TAILLIGHT ERROR MESSAGES. TO BE FAIR WE'VE NOT HAD ANY BURNING OR MELTED PARTS, MAYBE WE'VE JUST GOTTEN LUCKY. BUT THERE IS DEFINITELY SOMETHING WRONG…
Owner-reported narrative. 140,000 miles reported. Look up ODI 10525026 at NHTSA ↗
Owner report 11088839 · 2018-04-18 (April 18, 2018)
TL* THE CONTACT OWNS A 2006 MERCEDES-BENZ E350. WHILE DRIVING 45 MPH, THE BRAKE PEDAL WAS DEPRESSED, BUT FAILED TO ENGAGE AS IT TRAVELED TO THE FLOORBOARD. THE CONTACT WAS ABLE TO SAFELY COAST THE VEHICLE TO A GAS STATION. THE CONTACT STATED THAT THE CHECK ENGINE WARNING INDICATOR ILLUMINATED WEEKS PRIOR TO THE FAILURE. THE VEHICLE WAS TOWED TO MERCEDES-BENZ OF SAN DIEGO (4750 KEARNY MESA RD, SAN DIEGO, CA) WHERE IT WAS DIAGNOSED THAT THE SBC MODULE MALFUNCTIONED AND NEEDED TO BE REPLACED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE F…
Owner-reported narrative. 243,000 miles reported. Look up ODI 11088839 at NHTSA ↗
Owner report 10788382 · 2015-11-04 (November 4, 2015)
TL* THE CONTACT OWNS A 2007 MERCEDES BENZ C350. THE CONTACT STATED THAT THE SERVICE ENGINE WARNING LIGHT RANDOMLY FLASHED. AS THE FAILURE PROGRESSED, THE WARNING LIGHT REMAINED ILLUMINATED. THE VEHICLE WAS TAKEN TO THE DEALER MORE THAN FIVE TIMES AND THEY WERE NOT ABLE TO REMEDY THE FAILURE AFTER SEVERAL REPAIRS. THE VEHICLE WAS NOT REPAIRED AND THE SERVICE ENGINE WARNING LAMP WAS STILL ILLUMINATED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 12,407. UPDATED 02/23/16*LJ THE CONSUMER STATED THE SEAL RING, B…
Owner-reported narrative. 12,407 miles reported. Look up ODI 10788382 at NHTSA ↗
Owner report 10503953 · 2013-03-21 (March 21, 2013)
UPON FILLING GAS TANK NOTICED FUEL SMELL IN GARAGE. THIS HAPPENED MANY TIMES. DECIDED NOT TO FILL COMPLETELY, AND SMELL WENT AWAY. I NOW ONLY PUT 10 GALLONS IN THE TANK AND DO NOT FILL UP. I'M SENDING THIS BECAUSE I SAW AN ARTICLE IN THE LA TIMES INDICATING THIS MAY BE PROBLEM WITH "E" CLASS VEHICLES. *TR
Owner-reported narrative. 60,000 miles reported. Look up ODI 10503953 at NHTSA ↗
Owner report 10510660 · 2013-05-05 (May 5, 2013)
AROUND DECEMBER 2010 I BEGAN NOTICING THERE HAS BEEN A GAS SMELL FROM REAR WHEEL HOUSING AND REAR SEAT WHENEVER I FILL UP THE GAS TANK. I HAVE EXPERIENCED WITH VARIOUS FUEL LEVEL AND CONCLUDED THAT GAS SMELL STARTS WHEN GAS IS MORE THAN 3/4 FULL. I HAVE BEEN TRYING NOT TO FILL GAS MORE THAN 3/4 AND HAVE RECENTLY CHANGED A DELIVERY UNIT AND ALL THE SEALS, WHICH HAVE BEEN PROBLEMATIC AREAS FOR MANY MERCEDES. THE GAS SMELL DID NOT GO AWAY AND I DON'T FEEL SAFE DUE TO THE RISK OF FIRE IN ADDITION TO THE UNPLEASANT GAS SMELL IN THE CABIN. *TR
Owner-reported narrative. 43,000 miles reported. Look up ODI 10510660 at NHTSA ↗
Owner report 10500702 · 2013-02-27 (February 27, 2013)
THE FITING ARE NOT MADE WELL ,AND OIL IS DISTRIBUTE ON EVERY PART OF THE FRONT ENGINE AND TRANSMISSION AREA CAUSING SMOKE AND CAN CAUSE FIRE. IF IT COME APART. *TR
Owner-reported narrative. 86,000 miles reported. Look up ODI 10500702 at NHTSA ↗
Owner report 11142425 · 2018-10-24 (October 24, 2018)
WHEN DRIVING MY '06 C350 WITH 48 THOUSAND MILES, YES 48K ON IT, THE TRANSMISSION SEEMS TO GO INTO A SAFE MODE. IT NORMALLY OCCURS WHEN DRIVING AT HIGHWAY SPEEDS AND HAVE TO SLOW DOWN GRADUALLY, THEN UPON ACCELERATION THE TRANSMISSION JUST REVS UP THE RPM WITH NO POWER. I'M AFRAID ME AND MY TWO CHILDREN WILL BE REAR-ENDED DUE TO THE LOSS OF POWER IN THE TRANSMISSION. I THEN TRY TO DRIVE IT TO THE NEXT EXIT, SHUT OFF THE ENGINE AND RESTART. THIS NORMALLY RESETS EVERYTHING TO NORMAL. BUT IT COULD OCCUR AGAIN MINUTES OR HOURS LATER WHICH IS NOW GET…
Owner-reported narrative. 43,100 miles reported. Look up ODI 11142425 at NHTSA ↗
Owner report 10648789 · 2014-10-20 (October 20, 2014)
TL* THE CONTACT OWNS A 2008 MERCEDES BENZ C350. THE CONTACT STATED WHILE DRIVING APPROXIMATELY 80 MPH, THE ENGINE STALLED AND AN UNKNOWN WARNING LIGHT ILLUMINATED ON THE INSTRUMENTAL PANEL. THE FAILURE RECURRED TWICE. THE VEHICLE HAS NOT BEEN REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 104,000.
Owner-reported narrative. 104,000 miles reported. Look up ODI 10648789 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 |
|---|---|
| 2006 | 5 |
| 2007 | 5 |
| 2008 | 6 |
| 2009 | 7 |
2006: 5; 2007: 5; 2008: 6; 2009: 7