Engine complaints and recalls from NHTSA
Summary
The 2020 Mercedes-Benz GLC-Class has 17 NHTSA engine complaints and 0 engine-related recalls.
17
Complaints
0
Recalls
0
Injuries Reported
Data source: National Highway Traffic Safety Administration (NHTSA) · Last updated April 9, 2026
| Date ↓ | Component | Summary |
|---|---|---|
| Dec 29, 2025 | ENGINE | Premature oil pump failure on a 2020 Mercedes-Benz GLC 300 with 71,000 miles. The check engine light... |
| Dec 1, 2025 | ENGINE | The engine in my 2020 Mercedes-Benz GLC 300 suddenly malfunctioned while driving on two separate occ... |
| Oct 30, 2025 | ENGINE,FUEL/PROPULSION SYSTEM | Nationwide known cylinder head issues. Cylinder head work needing replaced. |
| Oct 26, 2025 | ENGINE | My 2020 Mercedes-Benz GLC 300 experienced a complete engine failure at ~51,000 miles, shortly after ... |
| Sep 19, 2025 | ENGINE | I am the owner of a 2020 Mercedes-Benz GLC300 with the M264 engine. I am hoping that you can assist ... |
| Jul 15, 2025 | ENGINE | With approximately 57,500 miles, the car began idling roughly, misfiring and losing power. The deal... |
| May 23, 2025 | ENGINE | •Jan 2025, while the car owner was driving her GLC300, a warning light came on, the car shook and th... |
| Apr 21, 2025 | ENGINE | Some M264 Engines are predisposition to premature cylinder head failure, this issue can cause signif... |
| Apr 8, 2025 | ENGINE | The check engine light was on. There is a problem with the oil pump valve of the engine. The probl... |
| Feb 4, 2025 | ENGINE | The check engine light illuminated, I took the car to the dealer I bought. They said the cylinder he... |
| Jan 13, 2025 | ENGINE | Car was running rough so I took it to the mercedes benz dealer they diagnosed the problem as cylinde... |
| Dec 4, 2024 | ENGINE | The contact owns a 2020 Mercedes-Benz GLC300. The contact stated that while stopped at a red light, ... |
| May 1, 2024 | ENGINE | The contact's son owns a 2020 Mercedes-Benz GLC300. The contact stated that when the vehicle was tak... |
| Apr 1, 2024 | ENGINE | Engine failure needs cylinder head replaced which is very common amongst this car. Same make and mod... |
| Feb 12, 2024 | ENGINE | Engine began unpredictably running rough. Would lose ability to accelerate, in traffic. Engine light... |
| Oct 16, 2023 | ENGINE | The contact owns a 2020 Mercedes-Benz GLC300. The contact stated that while driving at an undisclose... |
| Mar 6, 2022 | ENGINE | Sometimes after I hit the brake (hard or soft) but need to step on the gas again, the car pauses and... |