How many engine complaints does the 2023 Mercedes-Benz Glc300 have?

NHTSA lists 16 engine-related complaints for the 2023 Glc300, which is 29% of the 55 total complaints filed for the model year.

Is there a recall for the 2023 Glc300 engine?

Yes. Recall 23V878000 covers 2023 GLC300 vehicles with the M254 engine, where incorrect screws on the high-pressure fuel pump may prevent a proper seal; dealers replace the fuel pump free of charge.

At what mileage do 2023 Glc300 engine problems usually appear?

NHTSA data shows a median mileage of 400 miles at the time of failure for engine-related complaints.

Did the 2023 Glc300 engine issues cause any crashes or fires?

No. NHTSA records show 0 crashes and 0 fires among the reported engine complaints for this model year.

2023 Mercedes-Benz Glc300 Engine Problems

NHTSA lists 16 engine complaints for the 2023 Mercedes-Benz Glc300, 29% of all complaints filed for the year, with a median failure mileage of 400 miles. A related recall (23V878000) covers incorrect screws on the high-pressure fuel pump.

Engine complaints: 16; 29% of 55
Crashes reported: 0
Fires reported: 0
Injuries reported: 0
Median mileage: 400 mi
Related recalls: 1

Typical engine symptoms owners report

Check engine light illuminates repeatedly, sometimes within the first 300 to 3,500 miles, with dealers unable to find a clear cause or reset the light.
Vehicle fails to start and displays 12-volt or 48-volt battery service warnings, requiring long waits before the engine will restart.
Engine shuts off or stalls while driving, in one case on the highway at 75 mph, triggering a shutdown alert and requiring a tow.
Transmission error messages appear alongside engine warning lights, with the car unable to shift into gear or register park.
Owners report poor acceleration, hesitation, and worse fuel economy tied to a fuel pump problem later addressed by a recall notice.

When 2023 Mercedes-Benz Glc300 engine complaints were filed

First complaint Jul 1, 2023, latest Sep 7, 2025.

16 complaints filed with NHTSA from Jul 2023 to Sep 2025; peak Aug 2023 (6).

Engine recalls for the 2023 Mercedes-Benz Glc300

NHTSA 23V878000Dec 21, 2023Engine7 vehicles
Engine and engine cooling:critical fasteners
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023 GLC300, 2024 GLE350, and GLE450 vehicles equipped with an M254 engine. The incorrect screws, installed on the high-pressure fuel pump, may prevent a proper seal from forming between the high-pressure fuel pump and the tandem oil pump.
Risk: An inadequate seal can allow fuel and oil to leak onto the road, creating a hazard for other road users and increasing the risk of a crash. Additionally, a fuel and oil leak in the presence of hot engine components can increase the risk of a fire.
Remedy: Dealers will replace the high-pressure fuel pump, free of charge. Owner notification letters were mailed February 9, 2024. Owners may contact MBUSA customer service at 1-800-367-6372.

Engine complaints by Glc300 model year

Raw complaint counts per model year; newer years have had less time to accumulate complaints.

201644 (33%)
201738 (39%)
201829 (33%)
201913 (28%)
202022 (32%)
202131 (47%)
202215 (25%)
202316 (29%)
20247 (33%)
20254 (25%)

Frequently asked questions

How many engine complaints does the 2023 Mercedes-Benz Glc300 have?: NHTSA lists 16 engine-related complaints for the 2023 Glc300, which is 29% of the 55 total complaints filed for the model year.
Is there a recall for the 2023 Glc300 engine?: Yes. Recall 23V878000 covers 2023 GLC300 vehicles with the M254 engine, where incorrect screws on the high-pressure fuel pump may prevent a proper seal; dealers replace the fuel pump free of charge.
At what mileage do 2023 Glc300 engine problems usually appear?: NHTSA data shows a median mileage of 400 miles at the time of failure for engine-related complaints.
Did the 2023 Glc300 engine issues cause any crashes or fires?: No. NHTSA records show 0 crashes and 0 fires among the reported engine complaints for this model year.