NHTSA Complaint #11683317 — 2021 MERCEDES-BENZ GLC 300 ENGINE

Complaint Details

ODI Number	11683317
Vehicle	2021 MERCEDES-BENZ GLC 300
Component	ENGINE
Date of Incident	August 8, 2025
Date Filed	August 27, 2025
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	WA

Consumer Description

what happened? While driving, all of sudden, engine light was on and shaky with rough vibration consequently loss of power. I pulled over and turned off engine. Engine light disappeared after restarted. It happened again and had diagnostics at the dealership. Software update was given at first solution. However, next day, engine light on again, visited the dealership and it turned out there are leak on cylinder head. It seems a known issue. there are similar cases where vehicle could have been in critical situation. [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

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