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What 73 owners told NHTSA about the 2019 Mercedes-benz C-class Phev

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 (73)Crash / fire / injury (4)Engine (16)Fuel system (13)Electrical system (12)Body & structure (7)Seat belts (7)Brakes (6)Steering (5)Wheels (5)Transmission & drivetrain (4)Backup camera & sensors (3)

2 of 73 complaints match · Brakes · crash/fire/injury only · clear filters

Feb 28, 2024Speed controlBrakesFuel systemCrash

On the afternoon of February 6, 2024, as I was turning into my driveway to park in front of the garage, my car unexpectedly accelerated despite my foot being on the brake pedal. Despite my attempts to brake, the pedal didn't respond, causing the car to collide with the garage door and subsequently damage storage shelves and containers inside. My mother and two brothers were passengers, returning from my mother's doctor appointment, and she became trapped inside due to the garage door collapsing onto the car. Emergency services were called, and both the fire department and police assisted in freeing my mother from the vehicle. However, the police did not file an accident report since it occurred on private property. Subsequently, I contacted my insurance agent, and the car was towed to a repair shop recommended by the dealer. Today, I was informed by the repair shop that the damages are extensive enough for the car to be considered totaled by the insurance company. Fortunately, the incident did not occur while driving on the freeway or public roads earlier that day, potentially averting a more serious accident. Nevertheless, the ordeal has caused considerable stress and sleep loss for all involved. I have since reached out to the repair shop and dealer to conduct a thorough diagnostic analysis to determine the cause of the malfunction. I've requested copies of the data captured by the On-Board Diagnostics (OBD) system and Event Data Recorder (EDR), emphasizing that this data should not be deleted without my consent. However, I am uncertain about the next steps if the insurance company removes the car from the repair shop and how to access the requested data. Upon researching online, I've discovered numerous similar cases involving Mercedes-Benz cars, with over 20 incidents reported and 11 specifically concerning the same model as mine.

NHTSA ODI 11574602

Oct 6, 2020BrakesCrash

ON SEPTEMBER 5TH AROUND 4:30 PM, I MADE A COMPLETE STOP AT A RED LIGHT, ON THE INTERSECTION OF SYKES CREEK PKWY AND SR 520 IN MERRITT ISLAND, FLORIDA. WEATHER WAS PERFECT NO RAIN OR WIND. I APPLIED THE BRAKE HOLD FEATURE AND LIFTED MY FOOT OFF THE BRAKE PAD. ABOUT 3 MINUTES PASSED AND SUDDENLY THE ENGINE TURNED ON AND THE CAR MOVED AND COLLIDED WITH THE CAR IN FRONT OF ME AND SHE HIT THE CAR IN FRONT OF HER. IT WAS NOT HARD HIT AS EVIDENCED BY THE MINOR SCRATCH ON MY FRONT BUMPER (CAR #3) AND ANOTHER MINOR SCRATCH ON THE CAR IN FRONT OF ME (CAR #2), AND NO SCTRACHES AT ALL ON THE CAR IN FRONT OF HER( CAR #1)

NHTSA ODI 11363111

Working with the data? Download all 73 complaints as CSV · fetched from NHTSA July 20, 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 2019 Mercedes-benz C-class Phev verdict →