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Mercedes-Benz · NHTSA safety record

2020 Mercedes-Benz GLB 250 4Matic

Every safety complaint, recall and defect investigation the US government holds on this vehicle.

Owners have filed 8 safety complaints about the 2020 Mercedes-Benz GLB 250 4Matic with the US government. Of those, 1 describes a crash, 1 mentions a fire and no death is recorded. One recall campaign is open against it, covering the latches, locks and linkages.

The most complained-about system is the engine, named in 4 complaints, 50% of the total.

Compiled from NHTSA's complaint, recall and investigation files · Covers February 2026 to October 2026 · How this is counted

What is on file

8 complaints on file

8

Complaints

1

Describe a crash

1

Mention fire

0

People injured

0

Deaths

A complaint is an unverified account by the person who filed it, not a finding of fault. One complaint is one ODI number, which is how NHTSA counts them.

A recall is the manufacturer conceding a defect, and the repair is free. Whether one covers your particular car is a question only its VIN can answer, because a campaign covers a production range rather than a model year.

Which system owners named

Complaints naming each system
ENGINE 4 · 50%
ELECTRICAL SYSTEM 3 · 38%
FUEL/PROPULSION SYSTEM 3 · 38%
AIR BAGS 2 · 25%
POWER TRAIN 1 · 13%
STEERING 1 · 13%
SUSPENSION 1 · 13%
UNKNOWN OR OTHER 1 · 13%
VISIBILITY/WIPER 1 · 13%
WHEELS 1 · 13%
0 4 8

Red marks a system with a recall campaign against it. One complaint can name several systems, so these add up to more than 8.

Crash test ratings

NHTSA New Car Assessment Program

NHTSA has not crash tested the 2020 Mercedes-Benz GLB 250 4Matic. Its New Car Assessment Program tests a selection of each year's vehicles and does not reach motorcycles, heavy trucks, motorhomes or most low-volume models, so an absence here says nothing about how the vehicle would perform. It is not a low score.

What owners have reported about this vehicle is below, and it is a different question: a crash test measures what happens to the people inside in a controlled impact, while a complaint records what broke during ordinary use.

Recall campaigns

1 on file

LATCHES/LOCKS/LINKAGES:DOORS:LOCK

26V481000 · July 24, 2026

The defect
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.
The risk
A vehicle rollaway increases the risk of a crash or injury.
The remedy
Dealers will replace the driver's door lock, free of charge. Owner notification letters are expected to be mailed September 18, 2026. 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.

Mercedes-Benz USA, LLC · up to 310,667 vehicles across all model years covered

In owners’ own words

Quoted from the complaint file

Quoted from NHTSA's complaint file. These are unverified accounts by the people who filed them, not findings of fault.

ENGINE

fire

The vehicle was operating normally the previous night. We drove it and parked it in the driveway that evening, and it was not used again after that. The following morning, we started the vehicle to allow it to warm up and then returned inside the house. Approximately 10 minutes later, we discovered the vehicle was on fire, with flames coming from under the hood. We immediately called 911. The fire department responded and was able to extinguish the fire; however, the vehicle was completely destroyed, and part of our home sustained fire damage. There were no prior issues with the vehicle. We had purchased it in September 2025, and it was in excellent condition. This incident could have

NHTSA complaint 11717145, quoted in part. Filed by an owner and not verified by NHTSA or by us.

STEERING

crash · towed

Steering and the car is available for inspection. The car's steering failed and it ran into a parked car ay 15MPH on a resiential street. The car has been reviewed by insurance representatives. No warning lights appeared before the steering malfunction.

NHTSA complaint 11772862. Filed by an owner and not verified by NHTSA or by us.

FUEL/PROPULSION SYSTEM
Vehicle: 2020 Mercedes-Benz GLB 250 4MATIC Current mileage: Approximately 109,000 Date of most recent major incident:XXX I am reporting serious, recurring safety concerns involving my 2020 Mercedes-Benz GLB 250 4MATIC, including engine malfunction, loss of acceleration, repeated overheating, misfire warnings, and intermittent electronic display failure. I purchased this vehicle Certified Pre-Owned in XXX with approximately 44,000 miles. Since purchasing it, I have experienced multiple significant mechanical failures despite repeated Mercedes-Benz dealership repairs. SUMMER 2024 – REPEATED OVERHEATING ON [XXX] While traveling on [XXX] in [XXX], my vehicle began overheating. I contacted

NHTSA complaint 11771107, quoted in part. Filed by an owner and not verified by NHTSA or by us.

VISIBILITY/WIPER
My 2020 Mercedes-Benz GLB has a serious, unresolved safety issue involving the hood-latch warning and windshield wipers. While I am driving, the hood-open warning appears and the windshield wipers cut in and out or shut off unexpectedly. This problem was already occurring by March 2026. The vehicle currently has approximately 85,000 miles. During the recent heavy rain in New Jersey, these interruptions have compromised my visibility while the vehicle was moving. When the wipers stop clearing rain, my ability to see traffic, pedestrians, lane markings, and roadway hazards is impaired. This can prevent me from recognizing danger and reacting in time, putting me and other road users at

NHTSA complaint 11764044, quoted in part. Filed by an owner and not verified by NHTSA or by us.

ENGINE
Complete engine failure mid driving on highway. NO engine light prior to complete engine failure. Vehicle has been towed to two different Mercedes Benz auto dealerships. Both service directors concur that this should not have occurred with zero warning and low mileage of 64,856 with an impeccable service record at Mercedes Benz Came on suddenly Julie 2026 and no engine warning lights

NHTSA complaint 11757113. Filed by an owner and not verified by NHTSA or by us.

POWER TRAIN
EXTENDED WARRENTY INFORMATION MERCEDEZ BENZ HAS ISSUED WARRENTY TO THAT APPLIE TO CONDISTIONS AS LISTED ABOVE (EXHAUST VALVE, CYLINER HEAD ) BACK 08/04/2023 THE CAR HAS IN MERCEDEZ BENZ AND HAVE FAILED TO PICK ON THE EXTENDED WARRRENTY REPAIRS AND WE NOW FIND OUT THIS CASED MORE DAMAGE TO THE ENGINE AND NEEDS TO REPLACE CAMSHAT AND , CONTROL VALVE, ROLLER ROCKER ARM, AND ENGINE CAMSHAFT FOLLOWER . IT'S ALL BECAUSE DEALERSHIP FAILED AND NOTFIY US OF NEEDED REPAIRS . THEY ARE WILL COVER THE REPAIS ON EXHAUST VALVE SYSTEM BUT NOT CAMSHAT AND , CONTROL VALVE, ROLLER ROCKER ARM, AND ENGINE CAMSHAFT FOLLOWER . I FEEL DUE THEIR NEGLIGENCE THEY NEED COVER THIS AS WELL THEY ARE ASKING PAYMENT OF

NHTSA complaint 11744345, quoted in part. Filed by an owner and not verified by NHTSA or by us.

AIR BAGS
I have a passenger malfunction with airbags warning coming. I also just experienced getting gas. My milage counted down to zero which it never has before and my engine light came on. I went and got gas 3 times spending around $70 and my gas mileage still says 0 and my engine light is on.

NHTSA complaint 11735064. Filed by an owner and not verified by NHTSA or by us.

Compare

Other 2020 Mercedes-Benz models

GLE 350 91 Sprinter 2500 81 GLC 300 70 GLB 250 55 GLS 450 36 C 300 34 GLE 450 26 A 220 21

Complaints on file, same model year.

Every Mercedes-Benz on this site — 232 vehicles.

If this is your car and a dealer keeps failing to fix it, your state's lemon law may require the manufacturer to replace it or buy it back. How many repair attempts it takes, and how long you have to file, is set by the state you bought in and by nothing on this page.

Where these numbers come from

A complaint is one owner's account and has not been verified by NHTSA or by us. A vehicle with more complaints is not necessarily worse: models that sold in larger numbers collect more of them. How this is counted.

Compiled and maintained by
Independent developer and analyst