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NHTSA complaint #11556722

This page summarizes an official U.S. National Highway Traffic Safety Administration owner complaint. Use the verification links below to confirm the record directly with NHTSA.

Vehicle

2019 MERCEDES-BENZ GLC 300

Manufacturer

Mercedes-Benz USA, LLC

Components

ENGINE

Dates

Incident: 09/07/2023
Filed: 11/24/2023

Owner complaint summary

Cracked piston due to a faulty wrist pin installed in the MBZ M274 engine. Yes, available for inspection. Car began shaking and I would not have been able to control it if I had been driving at a higher speed. Yes, the problem is well known amongst MBZ and the service manager admitted to this engine having resulting cracked pistons. The "check engine" light did not come on until the day after the severe shaking of the vehicle. This should have been a safety recall years ago.

This is an owner complaint filed with NHTSA (ODI #11556722). It is not automatically an official recall, investigation outcome, or manufacturer admission unless the complaint text itself describes one.
NHTSA datasets & APIsAll complaints for this vehicleRaw NHTSA JSON (ODI #11556722)Back to reports

Official record ID (ODI): 11556722. This page is the human-readable source link used across afterwarranty. The raw JSON link proxies NHTSA's public API for machine verification; prefer this page when reading the complaint.