Every record we hold for this vehicle, as plain tables, with nothing added. The consumer page shows the same records with the maintenance schedule, price ranges and nearby shops around them.
vehicle
2020 / mercedes-benz / c-class
known issues
8 clusters (reviewed 2026-08-29)
complaints
46 on file (2020-05-18 → 2026-08-02)
recalls
0
investigations
0
fars
7 occupant deaths, crash years 2010-2024 (legacy-code)
Panoramic sunroof or roof panel detachment/shatteringSTRUCTURE, VISIBILITY6 complaints2023-06 → 2025-08c-class-2020-sunroof-roof-panel-detach
11678311 The contact owns a 2020 Mercedes-Benz C300. The contact stated that a section of the roof near the top of the windshield, between the sunroof, had detached and flown off the vehicle while driving 30 MPH in bumper-to-bumper traffic
11669230 On Tuesday, June 24th, 2025, the glass panel located between the windshield and sunroof on my 2020 Mercedes-Benz C43 AMG unexpectedly detached and flew off while driving. This posed a serious safety risk to me and others on the road
11622207 I was driving on the highway, with no other cars near me and my panoramic sunroof exploded. It made a very loud gunshot like sound and I felt shards of glass fall on my head while driving. I had 2 other passengers In the car
Transmission drops into neutral while drivingPOWER TRAIN4 complaints2023-02 → 2026-04c-class-2020-transmission-shifts-neutral
11533418 The car will randomly go into a neutral condition while driving the car. This occurs about once per month, sometimes more often
11527655 This has happened a couple of times to me so far. I have been driving down the road (today it was the highway) and my car fell out of gear into neutral and would not go back into gear unless I restarted the car
11505594 Car randomly goes into neutral despite being in D drive mode. Often at stop light, after the light turns green, the car revs up but is not in gear despite in 'D' drive. I have to shift to park or turn car off then on to get it to go again
Power trunk closing unexpectedly on occupantsSTRUCTURE3 complaints2024-02 → 2026-08c-class-2020-power-trunk-unexpected-close
11754327 I own a 2020 Mercedes-Benz C300 equipped with a power trunk. On July 22, 2026, I took my vehicle to Annapolis Mercedes-Benz because the power trunk was repeatedly closing on its own while people were standing in the trunk opening
11747837 Automatic trunk closing mechanism caused the trunk hood to close on my head as I was putting groceries in the trunk. This has occurred several times in the past but this time it hit my head with more force
11569947 The issue is that the trunk lid closes abruptly and unintentionally. On Saturday, February 3, 2024, as I was putting a shopping bag in the trunk of my car, the trunk lid closed abruptly without my pressing the close button and hit my forehead
Tire belt separation and wheel rim crackingTIRES4 complaints2022-07 → 2025-11c-class-2020-tire-wheel-failure
11689319 BOTH the front tires in my 2020 Mercedes C300 developed sudden belt separation while driving at highway speed this past weekend
11522258 The contact owns a 2020 Mercedes-Benz AMG C43. The contact stated while driving 65 MPH, the tire pressure warning light illuminated. The contact took the vehicle to a tire center and was informed that the front passenger’s side rim cracked, causing the tire to deflate
11474717 OEM tires that the Mercedes Benz dealership diagnosed as having shifted belts
Cylinder head exhaust valve wear leading to engine failurePOWER TRAIN, ENGINE, FUEL/PROPULSION SYSTEM3 complaints2024-03 → 2026-02c-class-2020-cylinder-head-exhaust-valve
11718583 I am reporting a catastrophic repeat engine failure on my 2020 Mercedes-Benz C300. On October 9, 2025, with 26,589 miles, the vehicle suffered a Cylinder 2 failure (exhaust valves), causing a dangerous loss of power in traffic
11695702 While driving, the check engine light came on and the vehicle began shaking and running roughly. Diagnostics by Peachtree Imports (10/03/2025) and later by Mercedes-Benz of Atlanta South confirmed Cylinder #2 failure on the M264 2.0L engine at only 26,589 miles
11580278 Cylinder head is defective. Service advisor told me it was a known issue in which exhaust valves within cylinder head are prone to premature wear. If left unaddressed it leads to inevitable engine failure. I was quoted $12,000. My car is 2020 model year with not even 60,000
Engine stall or loss of acceleration from component faultsPOWER TRAIN, ELECTRICAL SYSTEM, ENGINE7 complaints2021-07 → 2026-04c-class-2020-engine-stall-power-loss
11731613 The contact owns a 2020 Mercedes-Benz C300. The contact stated that while at a stop, the vehicle failed to accelerate as intended. There was no warning light illuminated. The dealer was not contacted. The vehicle was not diagnosed or repaired
11654115 Diagnostic testing revealed fault code P06DA00, indicating an electrical failure or open circuit in the engine oil pump control valve
11424403 My car has failed to accelerate after being stopped. The first time, I was attempting to enter a shopping center parking lot by making a left turn across a busy road. When I engaged the gas pedal, the car finally got to 5MPH when I got into the parking lot
Rearview camera or back-over sensor failureBACK OVER PREVENTION3 complaints2022-06 → 2023-04c-class-2020-rearview-camera-sensor-fail
11475739 The contact owns a 2020 Mercedes-Benz C300. The contact was reversing out of her driveway at 3 MPH, the contact was using her rearview camera. The contact stated that the image froze and she crashed into a parked vehicle with the rear passenger side bumper of her vehicle
11469155 The contact owns a 2020 Mercedes-Benz C300. The contact stated that suddenly the vehicle's sensors were illuminating and activating a warning stated that the sensors were defective. Many of the vehicle's sensors began to deactivate and malfunction
11516496 The contact owns a 2020 Mercedes-Benz AMG C43. The contact received notification of NHTSA Campaign Number: 22V232000 (Back Over Prevention) however, the part to do the recall repair was not yet available
Airbag system defect or unresolved recallAIR BAGS3 complaints2020-05 → 2026-01c-class-2020-airbag-system-defect
11712823 I purchased this vehicle on December 26, 2025 from an authorized Mercedes-Benz dealership. Shortly after the purchase, I discovered an issue related to the airbag system, which indicates a potential safety defect
11428078 On July 17, 2021 I was driving at the posted rate of speed down I-275 Southbound here in Michigan. All of the sudden and without warning, there was a loud explosion which happened, from as near as I can tell, in the driver's side windshield pillar, where there is an airbag
11325066 THERE IS A RECALL ON MY CAR. THE AIRBAGS HAVE NOT BEEN REPLACED YET. THE RECALL WAS ISSUED A LONG TIME AGO
FARS counts every occupant death in a fatal crash, whatever the cause — it does not mean the vehicle was at fault or defective. Counts are not adjusted for how many of each vehicle are on the road.
Cite this
Derived data is CC BY 4.0. Link back to the page you used. Text and BibTeX below.
Wrench.Pro (2026). 2020 Mercedes-Benz C-Class vehicle data [dataset]. https://www.wrench.pro/data/vehicles/2020/mercedes-benz/c-class
@misc{wrenchpro_2020_mercedes_benz_c_class_2026,
author = {Wrench.Pro},
title = {Wrench.Pro vehicle data: 2020 Mercedes-Benz C-Class},
year = {2026},
howpublished = {\url{https://www.wrench.pro/data/vehicles/2020/mercedes-benz/c-class}},
note = {Derived from NHTSA public records. CC BY 4.0.}
}
