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Mercedes-Benz GLC 300 Recall 23V878: Fuel and Oil Leak Can Cause Crash or Fire Risk

NHTSA campaign 23V878, reported December 21, 2023, 7 vehicles potentially affected.

What this recall means for you

Incorrect screws were installed on the high-pressure fuel pump, which may prevent a proper seal from forming between the fuel pump and the tandem oil pump. This can allow fuel and oil to leak onto the road, creating a hazard for other drivers and raising the risk of a crash. A fuel and oil leak near hot engine components can also increase the risk of a fire.

If your vehicle is affected, an authorized Mercedes-Benz dealer will replace the high-pressure fuel pump free of charge. Owner notification letters were mailed February 9, 2024. You can also contact Mercedes-Benz USA customer service at 1-800-367-6372.

We recommend checking your VIN for open recalls to confirm whether your vehicle is included and has not yet been repaired.

Check whether this recall is open on your vehicle

The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 23V878Mercedes-Benz USA, LLC
Component
ENGINE AND ENGINE COOLING:CRITICAL FASTENERS; FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
Problem
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.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

Affected vehicles

Mercedes-Benz GLC 3002023
Mercedes-Benz GLE 3502024
Mercedes-Benz GLE 4502024