2006 Mercedes-Benz C350 Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2006 Mercedes-Benz C350, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Fuel system1147.8%
- Engine521.7%
- Airbags28.7%
- Electrical14.3%
- Brakes14.3%
- Body & structure14.3%
- Powertrain (other)14.3%
- Suspension14.3%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Fuel system
Reports naming fuel storage or delivery — tanks, pumps, lines, injectors and fuel leaks.
From owner reports, verbatim
At 9,000 miles my 2006 Mercedes C350 had to have a fuel pump replaced. It was out of warranty (low miles usage for 5 year old car) so I had to pay $900 for the repair. I could smell fuel everytime I filled the tank and the Mercedes dealer said the pump had to be replaced. I read about a recall of E350 models being recalled for the same reason with the same engine. I asked the dealer about this and they said mine was not part of the recall because it is a C class Mercedes. It has the same engine with the same problem and I think this should be looked into.
Fuel flex line from firewall to Fuel rail is leaking at both connections, ie. both ends at the swaged fitting.
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
ACCORDING TO THE MERCEDES-BENZ M272 AND M273 ENGINE CLASS ACTION LAWSUIT, THESE ENGINES ARE EQUIPPED WITH DEFECTIVE GEARS IN THEIR BALANCE SHAFTS (IN THE CASE OF THE M272 ENGINES) OR WITH DEFECTIVE IDLE GEARS (IN THE CASE OF THE M273 ENGINES) THAT WEAR OUT PREMATURELY, EXCESSIVELY AND WITHOUT WARNING, CAUSING THE VEHICLE TO MALFUNCTION, THE 'CHECK ENGINE LIGHT' TO REMAIN ILLUMINATED, AND THE VEHICLE TO MISFIRE AND/OR STOP DRIVING.
COMPLAINT SUMMARY: IN THIS SETTLEMENT THE PLAINTIFFS ALLEGE THAT MERCEDES PRODUCED CERTAIN VEHICLES EQUIPPED WITH DEFECTIVE GEARS IN THEIR BALANCE SHAFTS (IN THE EVENT OF THE M272 ENGINES) OR WITH DEFECTIVE IDLE GEARS (IN THE CASE OF THE M273 ENGINES). THESE DEFECTIVE GEARS WEAR OUT PREMATURELY, EXCESSIVELY, AND WITHOUT WARNING, CAUSING THE VEHICLE TO MALFUNCTION, THE ?CHECK ENGINE LIGHT? TO REMAIN ILLUMINATED, AND THE VEHICLE TO HAVE SYMPTOMS SUCH AS MISFIRING OR CATASTROPHIC STOPS. CASE NAME: MAJEED SEIFI, ET AL. V. MERCEDES BENZ USA LLC CASE NO. 3:12-CV-05493 U.S. DISTRICT COURT FOR THE NORTHERN DISTRICT OF CALIFORNIA. CONTACT: MERCEDES ENGINE DEFECT SETTLEMENT ADMINISTRATOR P.O. BOX 43351 PROVIDENCE, RI 02940-3351 EMAIL: [email protected] PD: MY VEHICLE HAS THE SAME PROBLEM, WITH DEFECTIVE FACTORY GEAR IN THEIR BALANCE SHAFTS. VEHICLE MAKE MODEL YEAR MERCEDES BENZ C350 2006 VIN: (XXXX) GENERATED AT CNHTSA.GOV 1 / 1 (XXXXXXXX) PARTS OF THIS DOCUMENT HAVE BEEN REDACTED TO PROTECT PERSONALLY IDENTIFIABLE INFORMATION PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).
Too few reports in this category for a page of its own — they appear in the full complaint list.
Airbags
Reports naming the air-bag system — deployment behaviour, inflators, sensors and warning lights.
From owner reports, verbatim
TAKATA RECALL NO ONE CAN TELL ME WHEN THE AIRBAGS WILL BE REPLACED. I AM ONE OF THE HIGHEST RISK CAR OWNER. MY CAR WAS MANUFACTURED IN 2006 AND I LIVE IN AN AREA THAT IS IN ONE OF THE HIGHEST RISK ZONES..
TAKATA RECALL I AM WRITING TO FIND OUT WHEN THIS DEFECTIVE AIRBAG IN MY CAR WILL REPLACED. I DO NOT FEEL SAFE IN THE CAR WITH THIS DEFECTIVE AIRBAG PRESENT IN THE VEHICLE AND I AM DEMANDING THAT IT BE REPLACED IMMEDIATELY. I FEEL SUFFICIENT TIME HAS ELAPSED FOR THE MANUFACTURERS TO FIX THIS PROBLEM AND MAKE MY CAR SAFE AGAIN.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
EIS AND ESL GO BAD, CAR WILL NOT START DUE TO STEERING WHEEL LOCKING.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Brakes
Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.
From owner reports, verbatim
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 FAILURE MILEAGE WAS APPROXIMATELY 243,000. THE VIN WAS NOT PROVIDED. *TT CONTACT STATES THAT VEHICLE WAS TAKEN TO RIVERSIDE MERCEDES-BENZ TO CHECK WHY THE CHECK ENGINE LIGHT WAS ILLUMINATED AND WAS NEVER TOLD THERE WAS A BRAKE MALFUNCTION. TWO WEEKS LATER BRAKES MALFUNCTIONED. *TT
Too few reports in this category for a page of its own — they appear in the full complaint list.
Body & structure
Reports naming the vehicle structure, frame, body panels, doors, hood and trim.
From owner reports, verbatim
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
Too few reports in this category for a page of its own — they appear in the full complaint list.
Powertrain (other)
Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.
From owner reports, verbatim
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 GETTING FRUSTRATING GIVEN THE CAR IS BARELY REACHING 50K MILES. SO THIS HAPPENS INTERMITTENTLY, UNEXPECTEDLY, AND WITH VARYING FREQUENCY. MERCEDES BENZ USA SHOULD HAVE A RECALL ON THIS AS WHEN I CALL THE DEALERSHIP THEY KNOW EXACTLY WHAT HAPPENED AND IT'S A VERY WELL-KNOW DEFECT THAT COSTS A CONSIDERABLE AMOUNT TO REPAIR. THIS CAR STARTED DOING IT AT 40K AND DOES IT OFTEN. I'VE NOTIFIED MY LAWYER BECAUSE I'M AFRAID IT COULD HAPPEN WITH A VEHICLE BEHIND ME AND THUS CAUSE AN UNEXPECTED REAR END IMPACT FROM ANOTHER DRIVER ON THE HIGHWAY.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Suspension
Reports naming suspension components — springs, struts, shocks, control arms and related hardware.
From owner reports, verbatim
FRONT RIGHT SPRING BROKE. THIS IS THE 2ND SPRING THAT HAS BROKEN IN LESS THAN A YEAR. THIS TIME THE BROKEN SPRING WAS RUBBING AGAINST MOVING PARTS AND SMOKING AT ONLY 5 MPH. IF THIS HAPPENED AT HIGHER SPEEDS, OR ON A CURVE, I SUSPECT IT COULD BE DANGEROUS. THERE ARE NUMEROUS REPORTS OF MERCEDES SPRINGS BREAKING ON VEHICLES WITH LESS THAN 50,000 MILES. THAT WOULD CERTAINLY INDICATE TO ME THAT EITHER THE DESIGN OR SPRINGS ARE DEFECTIVE. *TR
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .