Mercedes-Benz recall 23V878 covers 7 2023-2024 Gle 450, Gle 350, and Glc 300 vehicles for fuel-pump sealing defects. Free dealer repair.
Mercedes-Benz is recalling 7 2023-2024 Gle 450, Gle 350, and Glc 300 vehicles with M254 engines because incorrect screws on the high-pressure fuel pump can stop the pump from sealing correctly. Fuel and oil can leak onto the road or hot engine parts, raising crash and fire risk; Mercedes-Benz dealers will replace the screws free of charge.
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What's wrong?
The high-pressure fuel pump on affected 2023-2024 Mercedes-Benz Gle 450, Gle 350, and Glc 300 vehicles is mounted to the engine and feeds fuel at high pressure for combustion. It has to seal tightly against the tandem oil pump, which helps move oil through the engine. The screws holding that joint are part of the seal.
On these vehicles, the wrong screws were installed during assembly. Mercedes-Benz found the screws were too long, so the high-pressure fuel pump does not clamp against the tandem oil pump as designed. That poor clamp can keep the sealing surfaces from closing fully, which can allow oil or fuel to leak from the pump area.
When the issue occurs, the driver can see the malfunction indicator light in the instrument cluster. That warning light is the owner-facing sign to have the vehicle checked.
Who's affected?
Spans three Mercedes-Benz SUV models across 2023-2024, with the same screw identified across the critical-fastener and fuel-system components.
| 2024 Mercedes-Benz Gle 450 | Critical fasteners |
|---|---|
| 2024 Mercedes-Benz Gle 450 | fuel system |
| 2024 Mercedes-Benz Gle 350 | Critical fasteners |
| 2024 Mercedes-Benz Gle 350 | fuel system |
| 2023 Mercedes-Benz Glc 300 | Critical fasteners |
| 2023 Mercedes-Benz Glc 300 | fuel system |
| Units affected | 7 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific SUV is included.
What's the safety risk?
An inadequate seal can let fuel and oil leak onto the road, creating a hazard for other drivers and increasing crash risk. If fuel or oil reaches hot engine parts, fire risk also rises. Treat a malfunction indicator light as a reason to drive cautiously and schedule the repair soon. Repair is free at any franchised Mercedes-Benz dealer.
What should I do?
- Check your VIN to confirm your 2023-2024 Mercedes-Benz Gle 450, Gle 350, or Glc 300 is included in this recall.
- Contact a franchised Mercedes-Benz dealer to schedule the free high-pressure fuel-pump replacement that fixes the inadequate seal behind the fuel and oil leak risk.
- Bring the recall notice if Mercedes-Benz mailed one. If not, reference recall number 23V878 when you call.
- Park the vehicle and call the dealer if you see fuel or oil leaking before the repair.
What happens at the repair
At the dealer, a Mercedes-Benz technician replaces the high-pressure fuel pump and checks the pump sealing area connected to the tandem oil pump. The replacement parts and labor are covered by the recall. Repairs already paid out of pocket are handled through the new vehicle warranty, not a separate reimbursement program, because the involved vehicles remain under warranty. Ask the service desk how warranty coverage applies if you have prior paperwork for this fuel pump condition.
| Reimbursement | Warranty coverage applies |
|---|
Timeline
| December 21, 2023 | NHTSA published the recall |
|---|---|
| December 28, 2023 | Dealer notification began |
| February 9, 2024 | Owner notification mailed |
| February 9, 2024 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| February 9, 2024 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 23V878?
Recall 23V878 covers 7 2023-2024 Mercedes-Benz Glc 300, Gle 350, and Gle 450 vehicles with an M254 engine. Incorrect screws on the high-pressure fuel pump can prevent a proper seal between the fuel pump and tandem oil pump.
What should I do if my 2023-2024 Mercedes-Benz Glc 300, Gle 350, or Gle 450 is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 23V878. If it is, contact a franchised Mercedes-Benz dealer to schedule the high-pressure fuel pump replacement. Reference recall number 23V878 when you call. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost. Mercedes-Benz dealers will replace the high-pressure fuel pump free of charge at any franchised Mercedes-Benz dealer.
What is the safety risk?
The safety risk is a fuel and oil leak from an inadequate seal. Leaked fuel and oil can create a road hazard for other road users and increase crash risk. If the leak reaches hot engine components, it also increases fire risk.
When were owners notified about recall 23V878?
Mercedes-Benz mailed owner notification letters on February 9, 2024. If you bought the vehicle used or never received a letter, the VIN still decides whether the recall applies. Check your VIN, then call a franchised Mercedes-Benz dealer if your vehicle is included.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/23V878000 |
|---|---|
| Mercedes-Benz customer service | 1-800-367-6372 |
| NHTSA recall # | 23V878 |
| NHTSA recall # (full) | 23V878000 |
Source documents
-
Download Quarterly Report (PDF) - Download Recall Report (PDF)
- Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Investigation Document (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →