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2021 Mercedes-Benz GLB 250 4Matic recalls and problems

The 2021 Mercedes-Benz GLB 250 4Matic has 1 safety recall and 2 owner complaints filed with NHTSA. Recall repairs are free at any Mercedes-Benz dealer.

Recalls
1
Complaints
2
Crashes / fires
0 / 0
Injuries / deaths
0 / 0

Recalls may cover only some 2021 Mercedes-Benz GLB 250 4Matic vehicles. Check your VIN at NHTSA ↗ to see open recalls for your exact car.

2021 Mercedes-Benz GLB 250 4Matic recalls

Recall 26V-481: Latches/Locks/Linkages

Reported Jul 24, 2026 · 310,667 vehicles affected · Mercedes-Benz USA, LLC

Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2020-2021 CLA, 2019-2022 A-Class, 2022-2023 C-Class, 2024 CLE, 2020-2026 GLA/GLB, and 2023-2024 GLC vehicles. Please refer to MBUSA's recall report for specific model information. The micro-switch in the driver's door lock may corrode and fail to detect an open door, preventing the electronic parking brake or "Auto-Park" feature from engaging automatically. This may result in a vehicle rollaway.

Risk: A vehicle rollaway increases the risk of a crash or injury.

Fix: Dealers will replace the driver's door lock, free of charge. Owner notification letters are expected to be mailed September 18, 2026. This will be a phased campaign, with the remedy becoming available in different phases based on model and model years. Owners may contact MBUSA customer service at 1-800-367-6372. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning July 31, 2026.

2021 Mercedes-Benz GLB 250 4Matic problems reported by owners

Problem areaReports
Engine2
Electrical System1
Fuel/Propulsion System1

Problems that are not covered by a recall are paid repairs; labor rates follow local mechanic pay — see what auto mechanics earn in each state.

Recent 2021 Mercedes-Benz GLB 250 4Matic complaints

Owner reports filed with NHTSA, as written (personal details removed). Complaints are not verified by NHTSA.

Engine · reported Jul 30, 2026
As I was driving down road car began to lose power, check engine light came on and car went into limp mode. Car was towed to nearest repair shop where analysis was made. I was advised to take to dealership for repair. Advised that there was a service campaign issued by the manufacturer on GLB class with M260 motors. See attached report. Took car to MB dealer and informed that an update to the ECU was needed but not available at this time. See attached report. Returned home to PA called Mercedes main office Customer service to check warranty and coverage yes it covered once dealer verifies…
Engine · reported Jun 9, 2026
While driving on the highway at 70mph my transmission malfunction warning light illuminated in red and my vehicle went into limp mode, creating a life threatening safety defect at highway speeds. I immediately took the vehicle to Mercedes Benz of Pittsburgh. The dealer's own diagnostic tech notes stated 'software is in preparation for concern' confirming this is a known safety defect on Mercedes' end. The dealer was unable to replicate the concern or produce stored fault codes but acknowledged software is actively being developed to address this issue. I contacted MBUSA who confirmed the only…

Other Mercedes-Benz GLB 250 4Matic years

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Compare all Mercedes-Benz GLB 250 4Matic years · All Mercedes-Benz models

Frequently asked questions

Does the 2021 Mercedes-Benz GLB 250 4Matic have any recalls?

Yes — NHTSA lists 1 recall for the 2021 Mercedes-Benz GLB 250 4Matic: 26V-481 (latches/locks/linkages). Not every vehicle is affected, so check your VIN at nhtsa.gov/recalls.

What is the most common problem with the 2021 Mercedes-Benz GLB 250 4Matic?

Owners report engine problems most often (2 reports), followed by electrical system (1).

Are Mercedes-Benz recall repairs free?

Yes. Safety recall repairs are free at authorized Mercedes-Benz dealers, whether you are the first owner or bought the car used.