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What 233 owners told NHTSA about the 2012 Mercedes-benz E-class Wagon

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (233)Crash / fire / injury (9)Airbags (92)Fuel system (37)Electrical system (22)Brakes (21)Engine (20)Suspension (15)Steering (12)Transmission & drivetrain (10)Body & structure (8)Seats (7)

9 of 233 complaints match · crash/fire/injury only · clear filters

Dec 5, 2024BrakesCrash1 injury

The contact owned a 2012 Mercedes-Benz E550. The contact stated while her husband was driving 20-25 MPH and making a right turn, the brake pedal was depressed but traveled down to the floorboard, and the vehicle failed to respond. The contact's husband stood on the brake pedal; however, the vehicle failed to respond and crashed into a small ditch. The contact was occupying the front passenger's side seat at the time of the incident. The contact was unsure whether there was a warning light illuminated. The air bags deployed. The contact stated that there was smoke coming from the air bags. Both the contact and her husband immediately exited the vehicle. The contact's husband did not sustain any injuries. The contact stated that her left arm was deformed. The contact was transported to the Hospital by a family member. The Doctor diagnosed that the contact had sustained two broken bones on the left arm and two broken bones on the left foot. The contact underwent surgery and was scheduled for physical therapy. The contact was unsure whether a police report was filed. The vehicle was towed and totaled by the insurance company. The dealer was not notified of the failure. The manufacturer was notified of the failure and advised the contact that a field inspector would be sent to inspect the vehicle. The failure mileage was unknown.

NHTSA ODI 11629095

Sep 24, 2019AirbagsCrash1 injury

TL* THE CONTACT OWNS A 2012 MERCEDES-BENZ E350. WHILE DRIVING 40 MPH, THE CONTACT'S VEHICLE WAS INVOLVED IN A SIDE IMPACT COLLISION WITH ANOTHER VEHICLE HEADED IN THE SAME DIRECTION. THE OTHER VEHICLE SWERVED AWAY FROM THE CONTACT'S VEHICLE, BUT WAS THEN IMPACTED BY THE FRONT BUMPER OF THE CONTACT'S VEHICLE. THE CONTACT STATED THAT NEITHER THE DRIVER'S NOR THE PASSENGER'S FRONTAL AIR BAGS DEPLOYED. A POLICE REPORT WAS FILED. THE CONTACT SUSTAINED INJURIES TO THE NECK, BACK, AND LEG, WHICH REQUIRED MEDICAL ATTENTION. THE PASSENGER SUSTAINED SIMILAR INJURIES AND ALSO SOUGHT MEDICAL ATTENTION. THE VEHICLE WAS TOWED TO A TOW LOT. MERCEDES-BENZ OF MYRTLE BEACH (936 JASON BLVD, MYRTLE BEACH, SC 29577, (843) 848-6800) AND THE MANUFACTURER WERE INFORMED OF THE FAILURE. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE VEHICLE WAS INCLUDED IN NHTSA CAMPAIGN NUMBER: 17V017000 (AIR BAGS). THE APPROXIMATE FAILURE MILEAGE WAS APPROXIMATELY 115,000. *DT *AS*DT

NHTSA ODI 11257736

Mar 9, 2019EngineFire

FAN FIRE. OIL SMELLING SMOKE WHICH TURNED TO FLAMES.

NHTSA ODI 11185541

Jan 7, 2019AirbagsCrash1 injury

TL* TAKATA RECALL. THE CONTACT OWNS A 2012 MERCEDES-BENZ E350. THE CONTACT RECEIVED A RECALL NOTICE FOR NHTSA CAMPAIGN NUMBER: 17V017000 (AIR BAGS). THE CONTACT STATED THAT THE MANUFACTURER FAILED TO PROVIDE THE PART WITHIN A REASONABLE TIME FRAME. MONTHS LATER, WHILE DRIVING LESS THAN 5 MPH, ANOTHER VEHICLE FAILED TO STOP AND CRASHED INTO THE FRONT PASSENGER SIDE OF THE CONTACT'S VEHICLE. NONE OF THE AIR BAGS DEPLOYED. THE DRIVER SUSTAINED NECK, BACK, RIGHT SHOULDER, RIGHT ARM, AND LEFT KNEE INJURIES. MEDICAL ATTENTION WAS RECEIVED. A POLICE REPORT WAS FILED. THE VEHICLE WAS TOWED TO PARK PLACE MOTORCARS MERCEDES-BENZ FORT WORTH (5601 BRYANT IRVIN RD, FORT WORTH, TX 76132, (817) 310-9745) TO BE DIAGNOSED. THE MANUFACTURER WAS NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 93,000. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.

NHTSA ODI 11164989

Dec 15, 2018Seats1 injury

THE DRIVER SEAT PLASTIC/CHROME HANDLE. IS SEPARATING FROM THE PLASTIC THE CHROME HAS BECOME A SHARP PIECE OF METAL. WHEN I REACHED IN THE CAR IT CAUSED A 2.5 INCH LACERATION ON MY FOREARM, HAD TO HAVE SEVEN STITCHES, ANTIBIOTICS AND A TETANUS SHOT.

NHTSA ODI 11161495

Nov 6, 2017AirbagsCrash

I RECEIVED A LETTER FROM MERCEDES IN MARCH 2017 THAT MY VEHICLE NEEDS TO HAVE IT'S AIR BAG REPLACED. MY DEALER IN MERCEDES DEALER IN CALABASAS HAS HAD NO APPROVAL OR INSTRUCTIONS TO REPLACE THE BAG AT THAT TIME AND IS NOT REPLACING MY AIRBAG. I JUST SPOKE TO MERCEDES CALABASAS ON 11/3/2017 WITH THE SAME ANSWER. PLEASE REPLACE MY AIR BAG...ITS BEEN ONE YEAR AND I HAVE BEEN WORRIED THAT MY AIR BUGS WILL NOT DEPLOY. I WAS IN AN ACCIDENT AND NO AIR BAG DEPLOYMENT WHEN SOMEONE BACKED INTO THE FRONT OF MY CAR WHILE I WAS STATIONARY. I BUY AN EXPENSIVE CAR AND I HAVE TO WAIT OVER A YEAR FOR A DEFECTIVE AIR BAG..THIS IS UNACCEPTABLE! THE FACT I HAVE HAD THIS CAR SINCE IT WAS MANUFACTURED WITH A DEFECTIVE BAG IS NOT MERCEDES WAY OF DOING BUSINESS. I WANT THE CAR REPLACED IF THE AIR BAGS AREN'T REPLACED IMMEDIATELY. I AM PUTTING MY 13 YEAR OLD DAUGHTER AND FAMILY AT R

NHTSA ODI 11043736

Oct 3, 2014Transmission & drivetrainEngineCrash1 injury

TL* THE CONTACT OWNS A 2012 MERCEDES BENZ E350. WHILE THE VEHICLE WAS PARKED AND THE KEY WAS REMOVED FROM THE IGNITION, THE VEHICLE JERKED AND ROLLED BACKWARDS BEFORE STOPPING INDEPENDENTLY. IN ADDITION, THE CONTACT HEARD AN ABNORMAL NOISE AND THE VEHICLE VEERED TO THE LEFT WHEN REVERSING. THE DEALER WAS UNABLE TO DIAGNOSE THE FAILURE BUT MADE THE FOLLOWING REPAIRS: THE COVER ON THE FRONT PASSENGER SIDE CYLINDER HEAD, REMOVED/INSTALLED A SEAL, NON-RETURN VALVE, CHAIN TENSIONER, SEALANT MB, FLANGE GASKET, HEXALOBULAR BOLT, THE COVER ON THE FRONT DRIVER SIDE CYLINDER HEAD, REMOVED/INSTALLED A SEAL, LEFT AND RIGHT SECONDARY DRIVE CHAIN TENSIONERS, FRONT COVER CYLINDER, AND THE CHECK VALVE. ON ANOTHER OCCASION, THE VEHICLE ROLLED IN REVERSE AND CRASHED INTO THE BUMPER OF ANOTHER VEHICLE. THE DOOR OF THE VEHICLE BRUISED THE CONTACT AND MEDICAL ATTENTION WAS REQUIRED. THE VEHICLE WAS TOWED TO THE DEALER. A POLICE REPORT WAS NOT FILED. THE DEALER WAS NOT ABLE TO DIAGNOSE THE FAILURE AND THE VEHICLE REMAINED AT THE DEALER. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 5,597.

NHTSA ODI 10641320

Sep 30, 2014Transmission & drivetrainCrash1 injury

TL* THE CONTACT OWNS A 2012 MERCEDES BENZ E350. THE CONTACT STATED THAT THE VEHICLE WAS SECURED WITH THE ENGINE TURNED OFF WHEN THE VEHICLE ROLLED AWAY IN REVERSE INDEPENDENTLY AND AS THE CONTACT WAS EXITING THE FRONT DRIVER'S SIDE DOOR. THE CONTACT WAS KNOCKED TO THE GROUND BY THE OPEN DOOR, WHICH THEN CRASHED INTO THE REAR FENDER OF AN UNOCCUPIED AND PARKED VEHICLE. THE VEHICLE CONTINUED TO ROLL AWAY AND CAME TO A STOP WHEN ENCOUNTERING A NEARBY CURB. THE CONTACT SUSTAINED BRUISES ALL OVER THE BODY AND REQUIRED MEDICAL ATTENTION. A POLICE REPORT WAS NOT FILED OF THE INCIDENT. THE VEHICLE WAS TOWED TO AN AUTHORIZED DEALER. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 6,000.

NHTSA ODI 10640109

Apr 26, 2014Transmission & drivetrainEngineCrash

WHILE DRIVING ON AN EXPRESS WAY IN DALLAS, TEXAS MY GPS MADE AN ERROR CONCERNING AN EXIT AND I WAS REQUIRED TO DIVERT QUICKLY TO THE LEFT TO MAKE EXIT LANE .TIME WAS 6:00 PM ,HEAVY TRAFFIC CONDITIONS AND ROAD AND WEATHER CONDITIONS WERE EXCELLENT AND DRY. MY MERCEDES PRE ACTIVATED A SKID MODE AND THERE WAS APPROXIMATELY A 70% CUT BACK IN ENGINE POWER .A YELLOW ENGINE LIGHT CAME ON AND SKID MODE CAME ON OPERATOR SCREEN BUT THERE WAS NO SKIDDING TAKING PLACE. I WAS HELPLESS WITH NO POWER TO KEEP UP WITH THE 50-60 MPH TRAFFIC WHILE TRYING TO GET INTO LANE .CONSEQUENTLY A SEMI TRACTOR STRUCK MY LEFT REAR FENDER /BUMPER CAUSING DAMAGE TO MY MERCEDES. THERE WAS NO DAMAGE TO THE TRACTOR. ACCORDING TO MERCEDES THE VEHICLE WAS SUPPOSED TO DO THIS AS A SAFETY FEATURE. IF THIS IS TRUE THEN THEY ACTUALLY IN MY OPINION WHILE DEVELOPING SAFETY FEATURES CREATED ANOTHER UN SAFE CONDITION WHERE AS THE SEMI COULD HAVE RUN OVER MY WIFE AND I KILLING US BOTH. THIS WAS TRULY A NEAR MISS AND WE ARE VERY MUCH CONCERNED ABOUT IT HAPPENING AGAIN TO US OR SOME ONE ELSE, RESULTING IN A FATAL ACCIDENT, NOT JUST A FENDER BENDER. MERCEDES IS IN DENIAL CONCERNING ANY UN SAFE CONDITION AND REFUSED TO TAKE ANY RESPONSIBILITY FOR ANY DAMAGE THAT THIS CAR CAUSED. PLEASE REVIEW THIS VEHICLE FOR POSSIBLE CALL BACK BEFORE SOME ONE DOES GET SERIOUSLY INJURED. PERHAPS SKID MODE OR TRACTION CONTROL MAY BE HELPFUL BUT ENGINE CUT BACK AND POWER LOSS NEEDS TO BE LEFT TO THE OPERATOR NOT THE VEHICLE CONTROLLING IT'S SELF. YOUR HELP WOULD BE GRACIOUSLY APPRECIATED. *TR

NHTSA ODI 10585027

Working with the data? Download all 233 complaints as CSV · fetched from NHTSA July 19, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2012 Mercedes-benz E-class Wagon verdict →