repaired · 2026 Q3
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NewRisk. A vehicle rollaway increases the risk of a crash or injury.
2021 Mercedes-Benz GLB 250 4MATICProblems, recalls & complaints
NHTSA has logged 2 owner complaints about the 2021 Mercedes-Benz GLB 250 4MATIC, most often about the engine. It is covered by 1 safety recall.
Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through July 30, 2026. Updated daily.
Complaints by system
Where the 2021 Mercedes-Benz GLB 250 4MATIC has problems
2 complaints grouped by the system owners reported.
2Engine
1Electrical system
1Fuel/propulsion system
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Engine | 2 | 0 |
| Electrical system | 1 | 0 |
| Fuel/propulsion system | 1 | 0 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
1 recall
2021 Mercedes-Benz GLB 250 4MATIC recalls and how many were fixed
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Mercedes-Benz.
Best & worst years
2021 vs. every other GLB 250 4MATIC year
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the GLB 250 4MATIC median. How we score
'20'21'22'23'24'25'26
- Avoid
- Caution
- Solid
- Best
- Not rated
In owners' words
What GLB 250 4MATIC owners report
Recent engine complaints filed with NHTSA, shortened. Personal details are removed.
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…
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…
Own a 2021 GLB 250 4MATIC?
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.