There are 11 owner-reported electrical system complaints for the 2014 Mercedes-Benz C-Classin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2014 Mercedes-Benz C250. The contact stated that the vehicle was difficult to start. Additionally, the steering wheel was difficult to turn to the left or the right. The vehicle was eventually started and driven to a dealer; however, after the vehicle was parked and turned off, the contact attempted to restart the vehicle; however, the vehicle failed to restart. The dealer replaced the battery however, the vehicle failed to start. The contact stated that the dealer then traced the failure to an anti-theft sensor that shut off the vehicle to deter vehicle theft. The vehicle was repaired. The manufacturer was informed of the failure. The failure mileage was approximately 115,000.
The ignition switch is causing the steering column to lock and it has been reported a lot at different dealerships that I have called.
My Mercedes started smoking from within the cabin. I traced it down to the speaker in the car. I contacted the Mercedes dealership and told them that my speaker was burning and smoking. The service advisor knew exactly the problem and said that the factory amplifier went bad and is causing an electrical issue in the car. He had seen this before. However, Mercedes is not considering a safety issue nor doing a recall. However, I was told I should not drive the car and have it towed. So, if my car can catch fire while driving from a faulty amplifier, that would be a safety issue. I was told this would be an out of pocket expense.
The contact owns a 2014 Mercedes-Benz C250W. The contact stated while attempting to start the ignition when entering the key. The contact stated no warning light was illuminated. The vehicle was not drivable. The contact towed the vehicle to the local dealer, where it was diagnosed with needing the unknown ignition component to be replaced. The vehicle had not been repaired as of yet. The manufacturer had been informed of the failure. The failure mileage was approximately 54,000.
THE ANTI THEFT SYSTEM FAILED AFTER 59,000 MILES, LOCKE THE STEERING WHEEL AND WON'T ALLOW THE CAR TO START. MERCEDES CHARGES 1,800 DOLLARS TO REPLACE IT.. NEEDS TO BE RECALLED VERY DANGEROUS.
STEERING LOCKS UP/KEY FOB IN IGNITION SAYS "REMOVE KEY" WITH NO START. EIS/ESL FAILURE
TL* THE CONTACT OWNED A 2014 MERCEDES-BENZ C250W. WHILE DRIVING APPROXIMATELY 40 MPH, THE VEHICLE BEGAN TO DECELERATE ON ITS OWN AND THE CHECK ENGINE INDICATOR ILLUMINATED. THE FAILURE RECURRED. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF PALM BEACH (4000 OKEECHOBEE BLVD, WEST PALM BEACH, FL 33409, 561-689-6363) WHERE IT WAS DIAGNOSED THAT THE FUEL PUMP NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. WHILE DRIVING BACK HOME AT APPROXIMATELY 30 MPH, THE DRIVER HEARD A HISSING SOUND AND DARK SMOKE GUSHED FROM UNDERNEATH THE HOOD WITHOUT WARNING. THE VEHICLE WAS PULLED OVER TO THE SIDE OF THE ROAD. FLAMES APPROXIMATELY SEVEN FEET HIGH POURED OUT FROM THE HOOD AND ENGULFED THE ENTIRE VEHICLE. THE POLICE AND FIRE DEPARTMENTS WERE CALLED TO THE SCENE. THE FIRE WAS EXTINGUISHED BY THE FIRE DEPARTMENT. THERE WERE NO INJURIES AND A POLICE REPORT WAS NOT FILED. THE VEHICLE WAS DESTROYED AND TOWED BACK TO THE DEALER. THE DEALER STATED THAT THE FAILURE WAS NOT CAUSED BY THE PREVIOUS REPAIR. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND OPENED AN INVESTIGATION. THE FAILURE MILEAGE WAS APPROXIMATELY 50,187.
I HAD BEEN DRIVING ON THE FREEWAY, GOT OFF ONTO A SIDE ROAD AND WHEN APPROACHING A STOP LIGHT WHILE BRAKING: MY CAR COMPLETELY DIED (WHILE IN DRIVE). THE MOTOR SHUT OFF, THE ELECTRICAL DASH SYSTEM LIGHTS ALL WENT OFF AND THE HAZARD TRIANGLE SYSTEM CAME ON (WITH THE SYMBOL OF AN EXCLAMATION MARK(!) INSIDE THE TRIANGLE). AFTER ABOUT A MINUTE AND A HALF, I PUT IT IN PARK, AND IT RESTARTED. SCARY! I HAD A FULL TANK OF GAS.
TL* THE CONTACT OWNS A 2014 MERCEDES BENZ C300. THE CONTACT STATED THAT WHILE DRIVING AT UNKNOWN SPEED, THE VEHICLE DECELERATED AFTER THE CHECK ENGINE AND TRACTION LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO THE DEALER. THE TECHNICIAN DIAGNOSED THAT THE ELECTRONIC MODULE NEEDED TO BE REPAIRED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 6,000. THE VIN WAS UNAVAILABLE.
TL* THE CONTACT OWNS A 2014 MERCEDES BENZ C250. WHILE DRIVING APPROXIMATELY 65 MPH, A WARNING LIGHT ILLUMINATED AND THE VEHICLE DECELERATED AND BECAME INOPERABLE. THE VEHICLE WAS ABLE TO BE RESTARTED AND WAS TOWED BY THE DEALER, WHO WAS NOT ABLE TO DIAGNOSE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 10,000.
I WAS DRIVING FOUR DAYS AFTER I LEASED MY BRAND NEW C250 2014 MERCEDES, AND THE CAR DIED IN THE MIDDLE OF A BUSY STREET. THE COP AND I COULDNT EVEN MOVE IT TO THE SIDE OF THE STREET. I AM WORRIED THIS WILL HAPPEN AGAIN. THUS I HAVE BEEN CALLING MERCEDES TO PLEASE REPLACE THE CAR WITH A SAFE ONE. *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026