Engine complaints and recalls from NHTSA
Summary
The 2021 Mercedes-Benz glc has 21 NHTSA engine complaints and 0 engine-related recalls.
21
Complaints
0
Recalls
0
Injuries Reported
Data source: National Highway Traffic Safety Administration (NHTSA) · Last updated April 10, 2026
| Date ↓ | Component | Summary |
|---|---|---|
| Jan 7, 2026 | ENGINE | Cylinder head valve seat leak ..vehicle Mia fires and check engine light on |
| Nov 13, 2025 | ENGINE | While I was driving on the Garden State Parkway, my vehicle experienced a sudden loss of power and p... |
| Oct 29, 2025 | ENGINE | There is a hesitation in or "shuddering" that causes the car to go into limp mode while in operation... |
| Oct 16, 2025 | ENGINE | Car has experienced rough idling, sluggish to no acceleration, check engine light illuminates and no... |
| Oct 9, 2025 | ENGINE | Twice my car slowed down tremendously in traffic because of a bad cylinder head. I drive a 2021 Merc... |
| Sep 22, 2025 | ENGINE | Check engine light came on. Code was P219D mixture formation is irregular on cylinder 2. Informed to... |
| Aug 8, 2025 | ENGINE | what happened? While driving, all of sudden, engine light was on and shaky with rough vibration cons... |
| May 13, 2025 | ENGINE | In September 2024 my vehicle's engine light came off and the car was struggling to accelerate, espec... |
| Apr 28, 2025 | ENGINE | Our 2021 Mercedes is 4 years old and had the engine light come on. The vehicle has always been maint... |
| Apr 1, 2025 | ENGINE | Head problems |
| Mar 6, 2025 | ENGINE | On [XXX] my GLC 300 AWD while driving back from work started shaking, went into limp mode, engine st... |
| Mar 3, 2025 | ENGINE | While driving my vehicle on March 3, 2025 the check engine light came on. Additionally my vehicle be... |
| Oct 27, 2024 | ENGINE | While drive check engine light came on and car would go past 20 miles per hour. This is the second ... |
| Oct 3, 2024 | ENGINE | The contact owns a 2021 Mercedes Benz GLC300. The contact stated that while driving at a low speed, ... |
| Sep 18, 2024 | ENGINE,FUEL/PROPULSION SYSTEM | Vehicle has a known engine failure. Leaking valve in Cylinder head. Cylinder 3 injector is faulty |
| Jan 10, 2024 | ENGINE | On 12/17/2023 at approximately 6:00 am while traveling to a friends house, my car stalled out on me... |
| Sep 11, 2023 | ENGINE | The contact owns a 2021 Mercedes Benz GLC300. The contact stated while driving approximately 65 MPH,... |
| Aug 1, 2022 | ENGINE | The contact owns a 2021 Mercedes Benz GLC 300. The contact stated that while driving at various spee... |
| Sep 28, 2021 | ENGINE | The contact owns a 2021 Mercedes-Benz GLC300. The contact stated that while his wife was driving at ... |
| Apr 21, 2021 | ENGINE,FUEL/PROPULSION SYSTEM | ON APRIL 21, 2021 AT ABOUT 1800 (TIME), LESS THAN 45-HOURS AFTER PURCHASE OF THE NEW 2021 GLC 300 VE... |