2019 MERCEDES BENZ C 300

What owners reported to NHTSA, ranked by how often and how seriously.

This is complaint data, not a random sample.

It only includes owners who chose to file a federal complaint, so it over-represents dramatic and safety-related problems and under-represents minor issues an owner just had fixed without reporting. Read this as what NHTSA complainants report most, not as this vehicle's true failure rate. Full methodology.

Component ranking

  1. #1

    software or update

    5 unsafe, 3 annoyance

    8
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=4)

    • "TL* THE CONTACT OWNS A 2019 MERCEDES-BENZ C300. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 21V058000 (COMMUNICATION, ELECTRICAL SYSTEM) HOWEVER, THE PART TO DO THE RECALL REPAIR WAS NOT YET AVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER E…"~8,004 mi, complaint #1734962
    • "The contact owns a 2019 Mercedes-Benz C 300. The contact stated that while driving 65 MPH, the vehicle inadvertently lost motive power, and was unable to accelerate above 25 MPH. The check engine warning light was illuminated. The vehicle was taken to the deal…"~36,000 mi, complaint #2058550
    • "Odometer Fraud. The contact purchased a 2019 Mercedes-Benz C300. The contact stated that after purchasing the vehicle, it was discovered that there was a mileage discrepancy. The vehicle was a dealer sale. The contact stated that at the time of purchase, the o…"~54,000 mi, complaint #2175082
  2. #2

    engine stall or no start

    1 stranded, 4 unsafe

    5
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=3)

    • "TL* THE CONTACT OWNS A 2019 MERCEDES-BENZ C300. WHILE DRIVING APPROXIMATELY 35 MPH, THE VEHICLE UNEXPECTEDLY SHUT OFF WITHOUT WARNING. THE VEHICLE WAS TOWED TO EURO MOTORCARS BETHESDA ([REDACTED ADDRESS], BETHESDA, MD 20814) FOR DIAGNOSTIC TESTING, BUT THE CA…"~1,250 mi, complaint #1633814
    • "TL* THE CONTACT OWNS A 2019 MERCEDES-BENZ C300W. THE CONTACT PURCHASED THE VEHICLE ON APRIL 6, 2019. ON APRIL 10, 2019 HE TOOK THE VEHICLE BACK TO THE DEALER (MERCEDES-BENZ OF SARASOTA, [REDACTED ADDRESS], SARASOTA, FL 34233, [REDACTED PHONE]) BECAUSE IT SHOOK…"~1,700 mi, complaint #1575968
    • "TL* THE CONTACT OWNS A 2019 MERCEDES-BENZ C300. THE CONTACT STATED WHILE STATIONARY, THE VEHICLE SHUTOFF WITHOUT WARNING. THE CONTACT WAS ABLE TO RESTART THE VEHICLE. THE VEHICLE WAS TAKEN TO THE LOCAL DEALER KEYES EUROPEAN ([REDACTED ADDRESS], SHERMAN OAKS, C…"~4,700 mi, complaint #1722348
  3. #3

    other

    2 unsafe, 3 annoyance

    5
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=1)

    • "The contact owns a 2019 Mercedes-Benz C300. The contact stated that the convertible top support were fraying. The contact stated the parts were almost the thickness of a shoelace and enabled the convertible top to fold correctly when the top was folding down.…"~43,000 mi, complaint #2156783
  4. #4

    seatbelt and pretensioner

    5 unsafe

    5
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "On both front seatbelts. After disconnecting, they both do not retract. Often they get stuck hanging below door after closing the door (both sides). I have brought the car to Mercedes Benz service dept in Mobile AL. I am told that as long as I can manually fee…"complaint #1796022
    • "1) SEATBELT NOT RETRACTING TO PROPER POSITION CAUSING BREAKAGE 2) BELT STOPPER BROKE OFF 2X. REPLACED 1X AND BROKEN AGAIN "complaint #1851686
    • "Our vehicle, VIN [XXX] , is a 2019 Mercedes C300 2 door coupe. We purchased it as a certified preowned vehicle from Mercedes of Bellevue in Washington State last March 2023. We noticed soon after taking possession of the vehicle that the front driver and pass…"complaint #1956604
    • "The contact's husband owns a 2019 Mercedes-Benz C300. The contact stated that the front driver's side and passenger's side seat belts failed to retract as designed. The vehicle was taken to the dealer, where it was determined that the seat belt assemblies need…"complaint #2121826
    • "My 2019 Mercedes-Benz C300 Coupe’s front driver seat belt will not fully retract to its stowed position. This creates THREE safety hazards: 1.Passenger Trip Hazard: The extended belt causes difficulty when exiting from the rear seat — passengers can easily tri…"complaint #2213487
  5. #5

    sunroof

    5 unsafe

    5
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=2)

    • "THE PANORAMA SUNROOF EXPLODED, NO OTHER CARS NEAR ME, NO ROCK HIT IT NO BIG BUMP IN THE ROAD, IT JUST EXPLODED...WAS TRAVELING AT NORMAL HIGHWAY SPEED, AND IT SOUNDED LIKE THE CAR HAD EXPLODED, VERY SCARY, AND IF THE INSIDE COVER HAD NOT BEEN CLOSED WOULD HAVE…"~11,550 mi, complaint #1632088
    • "The contact owns a 2019 Mercedes-Benz C300. The contact stated that while driving and attempting to close the sunroof, the sunroof made an abnormal popping sound. The contact pulled over and attempted to close the sunroof, but the sunroof failed to close. The…"~53,000 mi, complaint #2194051
  6. #6

    adas collision warning

    4 unsafe

    4
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=3)

    • "TL* THE CONTACT OWNS A 2019 MERCEDES-BENZ C300W4. WHILE DRIVING VARIOUS SPEEDS, THE ACTIVE BRAKE ASSIST ENGAGED WITHOUT WARNING. THE FAILURE WAS EXPERIENCED SEVERAL TIMES WHILE DRIVING. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF RENO ([REDACTED ADDRESS], RENO,…"~750 mi, complaint #1592410
    • "AUTOMATIC EMERGENCY BRAKING ENGAGES UNNECESSARILY WHEN DRIVING UNDER CHICAGO'S ELEVATED TRAIN TRACKS AND SIMILAR OVERHEAD STRUCTURES. FOR EXAMPLE, WHEN DRIVING ON WABASH AVE IN CHICAGO'S DOWNTOWN LOOP, OR ON LOWER WACKER DRIVE, THE AUTOMATIC EMERGENCY BRAKING…"~15,000 mi, complaint #1743262
  7. #7

    fuel pump

    3 unsafe

    3
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=6)

    • "TL* THE CONTACT LEASED A 2019 MERCEDES-BENZ C300. THE CONTACT STATED THAT WHILE DRIVING AT 70 MPH, THE VEHICLE DECELERATED INDEPENDENTLY TO 30 MPH WITH THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE FAILURE WAS EXPERIENCED THREE TIMES. THE VEHICLE WAS TOWED T…"~6,000 mi, complaint #1665543
    • "The contact owns a 2019 Mercedes-Benz C300. The contact stated that the vehicle would shut off soon after being cold started with several unknown warning lights illuminated. The vehicle was towed to the dealer where a diagnostic test was performed. The diagnos…"~25,751 mi, complaint #1948821
    • "The contact owns a 2019 Mercedes-Benz C300. The contact stated while driving, the vehicle failed to exceed 15 MPH. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic to be diagnosed. The vehicle was scanned, and th…"~34,945 mi, complaint #2039676
  8. #8

    fuel tank and lines

    3 unsafe

    3
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=1)

    • "The contact owns a 2019 Mercedes-Benz C300. The contact stated while driving 45 MPH, the contact noticed smoke coming from the front passenger's side wheel well. The vehicle was driven to the residence. Upon arriving at the residence, the contact raised the ho…"~76,000 mi, complaint #1971421
  9. #9

    steering rack mechanical

    3 unsafe

    3
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=2)

    • "TL* THE CONTACT OWNS A 2019 MERCEDES-BENZ C300. THE CONTACT STATED THAT WHENEVER THE STEERING WHEEL WAS TURNED LEFT OR RIGHT, THERE WAS A GRINDING SOUND COMING FROM THE STEERING WHEEL. THE CONTACT CONTACTED MERCEDES BENZ OF BROOKLYN (1800 SHORE PKWY BROOKLYN N…"~17,506 mi, complaint #1694089
    • "The contact owns a 2019 Mercedes-Benz C300. The contact stated while driving approximately 40 MPH and making a left turn, the steering made an abnormal sound. The contact pulled into the nearest parking lot, where the steering wheel locked. There were messages…"~43,000 mi, complaint #1908623
  10. #10

    acceleration loss or hesitation

    2 unsafe

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "When depressing the throttle, occasionally there is no response form the engine or a significant delay coupled with erratic engine revving behavior. When this happens the car has no drive power, but power brakes and steering are unaffected. The engine sits at…"complaint #1935428
    • "I am writing to formally report an ongoing issue and safety concern with my vehicle. Since the day I purchased the car, I have experienced numerous mechanical problems and have spent a significant amount of money on repairs. In August, I had to take my vehicl…"complaint #2136398
  11. #11

    throttle and pedal

    2 unsafe

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=1)

    • "I WAS PULLING OUT OF A PARKING LOT ONTO A HIGHWAY WITH A POSTED LIMIT OF 55 MPH. AS I PULLED OUT ONTO THE HIGHWAY THE GAS PEDAL JUST STOPPED WORKING. THE CAR WAS ON BUT IT JUST WOULDN'T GO ANYWHERE. A VEHICLE COMING FROM MY LEFT AT A HIGH RATE OF SPEED HAD…"~28,000 mi, complaint #1726127
  12. #12

    tire failure

    2 unsafe

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=1)

    • "NOTICED A BULGE ON THE FRONT DRIVERS SIDE TIRE, ON THE SIDE WALL. A COUPLE OF WEEKS LATER, WITH MINIMAL DRIVING, RUBBER ON SIDE WALL OPENED UP WHERE BULGE WAS AT. ACCORDING TO A RECALL ON OTHER MODEL TIRES, "TIRES THAT ARE OVER-CURED MAY DEVELOP A BREAK IN T…"~19,500 mi, complaint #1726224
  13. #13

    airbag system

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "i was involve in a accident, i was Tbone and the driver side airbags didnt deploy. "complaint #1803137
  14. #14

    backup camera

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "Started car, put in reverse, reverse camera did not engage, screen blacked out, I restarted car thinking systems and computers needed a re-boot. The backup camera no longer works. Coincidently, in reading the recall of the back-up camera on the 2019 C 300 Me…"complaint #2124666
  15. #15

    brake hydraulics

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=1)

    • "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. A…"~6,300 mi, complaint #1697949
  16. #16

    control module

    1 annoyance

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "The manufacturer recalled car due communication module's SIM card software problem more than 2 years ago. I went to the dealer where I bought the car and also contacted the manufacturer several times but still have not been able to solve the problem. "complaint #2040923
  17. #17

    engine head gasket

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "This vehicle was brought to an authorized Mercedes-Benz dealership for regularly scheduled maintenance. Shortly after this service, the vehicle began experiencing significant issues including difficulty accelerating, engine hesitation while driving, and notice…"complaint #2159661
  18. #18

    engine internal

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "While driving on highway, the engine light came on, a diagnostic test was performed by dealer, oil control valve defected) This could cause engine to lock up while driving, a serious safety concern. I contacted Mercedes Benz corporate office seeking help, bec…"complaint #2168909
  19. #19

    engine oil consumption

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=1)

    • "The contact owns a 2019 Mercedes-Benz C300. The contact stated that the "Service Engine Soon" warning light was illuminated. The contact restarted the vehicle several times; however, the warning light remained illuminated. The vehicle was taken to an independe…"~32,000 mi, complaint #2042498
  20. #20

    evap system

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "Po52E71- Emissions issue with crankcase. Mercedes implemented an extended warranty on various models but excluded 2019 C300, which definitely has the same issues. See below in reference to previous models. IMPORTANT EMISSION EXTENDED WARRANTY INFORMATION In…"complaint #2074574
  21. #21

    lighting exterior

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "LED HEADLIGHTS AND TAILLIGHTS ARE FAR TOO BRIGHT. THEY ARE DAMAGING PEOPLE'S EYES. THESE CARS NEED TO BE TAKEN OFF THE ROAD IMMEDIATELY!"complaint #1538378
  22. #22

    transmission automatic

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "Shifting gears when stopped and the car lunged forward while I was stopped at a red light. I almost hit the car in front of me at the red light. Very rough gear changes and changing out of the correct gear to the wrong one and then back into another one. Sever…"complaint #2236071
  23. #23

    trunk or liftgate

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "The automatic trunk lid started to close and hit my head while I was loading groceries into the trunk. It also started to close and hit my wife in the head when she was unloading the groceries about 15 minutes later. This situation was not reproduced or confir…"complaint #1767076
  24. #24

    unintended acceleration

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "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…"complaint #1971296
  25. #25

    wiper and washer

    1 annoyance

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=1)

    • "THE DRIVER SIDE WIPER BLADE IS CONSTANTLY SKIPPING AND SHUDDERING, PREVENTING THE WINDSHIELD FROM BEING PROPERLY CLEARED IN THE RAIN. AFTER 3 VISITS TO THE DEALERSHIP THEY FINALLY TOLD ME THAT THIS IS AN EXISTING ISSUE AND MERCEDES DOESN'T HAVE A FIX FOR IT AN…"complaint #1583198
  26. #26

    wiring harness

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "I was leaving a gas station after pumping gas, and as I began to turn onto the road my car failed to respond in any way. It would not accelerate or break, the wipers suddenly came on and the headlights and emergency lights began blinking off and on. I was 1/2…"complaint #2039348

NHTSA investigations

Search NHTSA's own recall and complaint database for MERCEDES BENZ C 300 directly.