Engine and engine cooling: critical fastenersRecall 23V-878 · Mercedes-Benz vehicles
Mercedes-Benz USA, LLC recall 23V-878 covers 7 Mercedes-Benz vehicles for a engine and engine cooling: critical fasteners problem, reported to NHTSA on December 21, 2023. The manufacturer's latest report (2025 Q4) shows 100% of affected vehicles repaired.
Source: NHTSA recall 23V878000 and manufacturer quarterly reports. Started by the manufacturer.
The 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.
The 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.
The fix
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.
Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.
How fast cars are being fixed
100%repaired
Share of affected vehicles repaired in each quarterly report the manufacturer filed with NHTSA.