2021 Mercedes-Benz GLB 250 Problems, Complaints & Recalls
- Compared with other GLB 250 years
- Far more complaints than other years 2nd of 7 for complaints
- Safety recalls
- 11 recalls: check your VIN
- NHTSA crash rating
- Not rated
Owners have filed 29 complaints with NHTSA about the 2021 Mercedes-Benz GLB 250. That ranks 2nd out of 7 GLB 250 model years for complaints. The most reported problem area is unknown or other (10 complaints, 34%). There are 11 safety recalls covering this model year.
- 29owner complaints
- 11safety recalls
- 0NHTSA investigations
- 0complaints mentioning a crash
Complaints are unverified owner reports and are not adjusted for sales volume.
Most common 2021 Mercedes-Benz GLB 250 problems
Complaints grouped by the part of the car owners reported, with the median mileage when the problem happened.
| Problem area | Complaints | Share | Median miles | Owners mention most | Typical repair cost |
|---|---|---|---|---|---|
| Unknown or Other | 10 | 34% | — | — | — |
| Engine | 7 | 24% | — | — | — |
| Electrical System | 4 | 14% | — | — | — |
| Suspension | 4 | 14% | — | — | — |
| Power Train | 3 | 10% | — | — | — |
| Structure | 3 | 10% | 63,000 | — | — |
| Back Over Prevention | 2 | 7% | — | — | — |
| Fuel/propulsion System | 2 | 7% | — | — | — |
| Steering | 2 | 7% | — | — | — |
| Wheels | 2 | 7% | — | — | — |
| Air Bags | 1 | 3% | — | — | — |
| Seat Belts | 1 | 3% | — | — | — |
| Service Brakes | 1 | 3% | — | — | — |
| Tires | 1 | 3% | 30,600 | — | — |
| Visibility | 1 | 3% | 13,716 | — | — |
| Visibility/wiper | 1 | 3% | — | — | — |
One complaint can list several problem areas, so shares can add up to more than 100%.
Complaints by year received
2021 Mercedes-Benz GLB 250 recalls (11)
Tap a recall to see the problem, the risk and the fix.
Latches/locks/linkages:doors:lock
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.
Electronic stability control (esc):control module
Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 GLB250 vehicles. The Electronic Stability Program (ESP) unit may be damaged, which can result in disabled anti-lock brakes (ABS), disabled electronic stability control (ESC), and an electrical short circuit.
Risk: Disabled anti-lock brakes and electronic stability control can increase the risk of a crash or injury. An electrical short circuit increases the risk of a fire.
Fix: Dealers will replace the ESP unit, free of charge. Owner notification letters were mailed October 28, 2022. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2022090009.
Electrical system:software; communication: auto crash notification
Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2022 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, AMG GT-Class, C-Class, E-Class, S-Class, SL-Class, GLC-Class, CLS-Class, GLB-Class, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. An error in the communication module's SIM card software can cause a mobile network connection failure, disabling the emergency call (eCall) system.
Risk: A disabled eCall system would prevent a vehicle occupant from contacting the emergency services call center in an emergency, potentially delaying emergency responders and increasing the risk of injury.
Fix: The communication module software will be updated through an Over-the-Air (OTA) update or by a dealer, free of charge. Owner notification letters were mailed July 8, 2022. Owner notification letters will be mailed in phases, on July 8, 2022, May 17, 2024, July 29, 2024, and September 27, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's numbers are for this recall is 2022060005 and 2023110006.
Suspension:rear; exterior lighting:headlights; suspension:multiple axle
Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 GLB 250 vehicles. The level sensor linkage on the rear axle might not have been installed properly, which could affect the headlight leveling function. MBUSA's number for this recall is 2022050011.
Risk: Improperly leveled headlights may project a glare, which can impact other drivers and increase the risk of a crash.
Fix: Dealers will inspect and repair the level sensor linkage, as necessary, free of charge. Owner notification letters were mailed June 10, 2022. Owners may contact MBUSA customer service at 1-800-367-6372.
Back over prevention:display function
Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2018-2021 CLA-Class, GLE/GLS-Class, A-Class, C-Class, E-Class, E-Class Coupe/Convertible, GLA/GLB-Class, GLC-Class, and CLS-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. The rearview camera may not display the rearview image due to a software error. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
Risk: An inoperable rearview camera display reduces the driver's rear view, increasing the risk of a crash.
Fix: Dealers will update the rearview camera software, free of charge. Owner notification letters were mailed July 15, 2022. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2022060007.
Air bags:frontal
Problem: Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2021 GLB 250 vehicles. These vehicles may be equipped with an incorrect front driver's air bag module.
Risk: An incorrect air bag module may not properly restrain an occupant during a crash. In addition, the air bag module could detach from the steering wheel during deployment. Either of these scenarios can increase the risk of injury in the event of a crash.
Fix: Dealers will inspect and replace the front driver's air bag, as necessary, free of charge. Owner notification letters were mailed March 25, 2022. Owners may contact MBUSA customer service at 1-800-367-6372.
Air bags:side/window
Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 GLB 250 and AMG GLB 35 vehicles. The driver-side window air bag may not have been mounted correctly to the lower area of the A-pillar. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 226, "Ejection Mitigation."
Risk: The driver-side window air bag may not function properly during a crash, increasing the risk of injury.
Fix: Dealers will inspect the mounting of the driver-side window air bag and repair it as necessary, free of charge. Owner notification letters were mailed December 2021. Owners may contact MBUSA customer service at 1-800-367-6372.
Back over prevention: sensing system: camera; electrical system:software
Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2019-2021 CLA-Class, GLE/GLS-Class, A-Class, E-Class, E-Class Coupe and Convertible, GLA/GLB-Class, GLC-Class, CLS-Class, and AMG GT-Class 4-door Coupe vehicles. Please refer to MBUSA's recall report for specific vehicle model details. The MBUX multimedia system software may cause the display to remain black, or reboot after startup. This could result in the rearview camera image not displaying properly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."
Risk: A backup camera that displays a blank image reduces the driver's rear view, increasing the risk of a crash or injury.
Fix: The multimedia system software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed beginning June 28, 2021. Owners may contact MBUSA customer service at 1-800-367-6373. MBUSA's number for this recall is 2021050012.
Structure:body:tailgate
Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 GLB35 AMG, and 2020-2021 GLB250 vehicles. The side spoilers on the tailgate might not have been installed correctly, allowing them to detach.
Risk: Detached spoilers can create a road hazard, increasing the risk of a crash or injury.
Fix: MBUSA will notify owners, and dealers will inspect and, if necessary, replace the side spoilers, free of charge. Owner letters were mailed July 2, 2021. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2021050009.
Structure:body
Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2020-2021 GLB250 vehicles. The wheel arch covers on the front fenders might not have been installed correctly, allow them to detach.
Risk: Detached wheel arch covers can create a road hazard, increasing the risk of a crash or injury.
Fix: MBUSA will notify owners, and dealers will check the installation of the front wheel arch covers and correct them as necessary, free of charge. Owner letters were mailed May 21, 2021. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2021040015.
Communication: auto crash notification; electrical system:software
Problem: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 - 2021 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, GT-Class, C-Class, E-Class, S-Class, CLS-Class, SL-Class, B-Class, GLB-Class, GLC-Class, and G-Class vehicles. Please refer to the Part 573 report for specific vehicle model details. The software design of the communication module may fail to communicate the correct vehicle location for the emergency call system (eCall) in the event of a crash.
Risk: Failure of the eCall system may result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash.
Fix: MBUSA will notify owners, and the communication module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. The recall began March 12, 2021. Owners may contact MBUSA customer service at 1-877-762-8267. MBUSA's number for this recall is 2021020025.
To see whether a specific car still has an open recall, enter its VIN on NHTSA's official recall lookup. You can also decode a VIN here.
Recent owner reports
Short excerpts of the latest complaints filed with NHTSA, with personal details removed. Full reports can be searched on NHTSA.gov.
The contact owns a 2021 Mercedes-Benz GLB250. The contact stated that the front stationary roof panel detached from the vehicle and shattered. The vehicle was taken to the dealer but was not diagnosed or repaired. The contact became aware of a recall with a similar failure; however, the VIN was not…
Family and I were driving on the interstate and heard a loud bang (like a shotgun) followed by immediate glass everywhere. The panoramic sunroof exploded. We had to drive 4 hours like this - lucky we didnât jerk the wheel on the interstate with the noise. Absolutely sickening that this is so…
When my car sits in the rain for long periods of time, while driving, it will automatically switch into neutral and give me a "transmission malfunction stop" & "service required do not shift gears visit dealer" sign on the dash. This has happened at least 7 times in 2 years since March 2024. The…
The component that appears to have malfunctioned is the front axle integral carrier (front subframe) and the related front suspension geometry, as the vehicle now exhibits a persistent pull to the left and degraded steering stability after the dealer replaced the front lower control arms, engine…
I purchased this vehicle in May 28 2025. I certified car. I took in for oil change Nov 17-2025. Found out they had lot of issues., left front bushing arm leaking. Rt engine mount leaking. Bad brakes battery low. Bad tire rt back passage side.front wheel axle and rear wheel axle is bad and screw on…
Other Mercedes-Benz GLB 250 years
← 2020 GLB 250 · 2022 GLB 250 →
| Year | Complaints | Recalls |
|---|---|---|
| 2026 GLB 250 | 1 | 1 |
| 2025 GLB 250 | 1 | 2 |
| 2024 GLB 250 | 4 | 1 |
| 2023 GLB 250 | 11 | 1 |
| 2022 GLB 250 | 11 | 1 |
| 2021 | 29 | 11 |
| 2020 GLB 250 | 54 | 20 |
See all Mercedes-Benz GLB 250 problems by year, every Mercedes-Benz model, or the Mercedes-Benz VIN decoder.
Similar Mercedes-Benz models
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Frequently asked questions
What are the most common problems with the 2021 Mercedes-Benz GLB 250?
Owners most often report unknown or other, engine, electrical system problems. The top one, unknown or other, accounts for 10 complaints.
Was there a recall on the 2021 Mercedes-Benz GLB 250?
Yes, 11 safety recalls. Enter your VIN at NHTSA.gov to check whether the repairs were done on your car.
Was the 2021 Mercedes-Benz GLB 250 a good year?
Complaint data can't fully answer that, because counts aren't adjusted for sales. Compared with other GLB 250 model years, the 2021 has far more complaints than most years. Always get a pre-purchase inspection and check the VIN for open recalls.