2021 Mercedes-Benz GLB 250: complaints, problems and recalls
Explore the records behind recurring owner reports.
Key facts
29 owner complaints analyzed
11 distinct recall campaigns
30,600 mi median reported failure mileage
Scope: 2021 model year. Data snapshot: . 3 complaints include usable failure mileage.
Most common problems
Unknown Or Other is the most frequently named component, appearing in 10 of 29 complaints (34.5%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Electrical and battery issues | 5 | 17.2% |
| Transmission and shifting | 3 | 10.3% |
| Engine operation | 2 | 6.9% |
| Braking behavior | 2 | 6.9% |
| Steering behavior | 1 | 3.4% |
| Fuel system concerns | 1 | 3.4% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Unknown Or Other | 10 |
| Engine | 7 |
| Electrical System | 4 |
| Suspension | 4 |
| Power Train | 3 |
| Back Over Prevention | 2 |
| Fuel/Propulsion System | 2 |
| Steering | 2 |
Unknown Or Other: 10; Engine: 7; Electrical System: 4; Suspension: 4; Power Train: 3; Back Over Prevention: 2; Fuel/Propulsion System: 2; Steering: 2
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 1 |
| 25,000 to 49,999 | 1 |
| 50,000 to 74,999 | 1 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 0 |
Under 25,000: 1; 25,000 to 49,999: 1; 50,000 to 74,999: 1; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
Under 25,000 miles has the most reports with usable mileage (1). 26 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2021 | 1 |
| 2022 | 5 |
| 2023 | 6 |
| 2024 | 3 |
| 2025 | 9 |
| 2026 | 5 |
2021: 1; 2022: 5; 2023: 6; 2024: 3; 2025: 9; 2026: 5
Pattern summary
Unknown Or Other leads the component reports. Electrical and battery issues appears in 5 complaint narratives. Transmission and shifting appears in 3 complaint narratives. Engine operation appears in 2 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Examples from the source records
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 11445503 · 2021-12-29 (December 29, 2021)
This vehicle was purchased new, in cash, from the Mercedes-Benz dealership in Bellevue, WA. It was delivered to me, without being warned about the car being equipped with summer tires, the state of Washington has continuous rain, snow, and ice in a regular basis throughout the years, summer tires are not a good tire for an SUV such as this GLB unit in this region. On 12/27/2021 I went on an errand around my neighborhood, the road had snow and ice, and it had been serviced by our city's plows and deicer was present, during three occasions I had …
Owner-reported narrative. Look up ODI 11445503 at NHTSA ↗
Owner report 11455730 · 2022-03-08 (March 8, 2022)
The contact owns a 2021 Mercedes-Benz GLB250. The contact received notification of NHTSA Campaign Number: 21V354000 (Back Over Prevention, Electrical System) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue and informed the contact that the part was not yet available. The contact had not experienced a failure. Parts distribution disconnect.
Owner-reported narrative. Look up ODI 11455730 at NHTSA ↗
Owner report 11467987 · 2022-06-07 (June 7, 2022)
We purchased a brand new Mercedes GLB in January 2021, I noticed the car started to shake. On our way leaving Zion National Park, the car started shaking really hard and the engine light turned on. The car wouldn't accelerate. We had to pull over on the side of the road. We barely made it to the dealer in St. George, Utah, with the car shaking the entire time. We met with Ryan Poleszak the service adviser, and he said that he has seen this problem several times with Mercedes 4-cylinder engines in GLB, GLA, and C-class models in the past, and it…
Owner-reported narrative. Look up ODI 11467987 at NHTSA ↗
Owner report 11472868 · 2022-07-08 (July 8, 2022)
Detached wheel arch covers while driving
Owner-reported narrative. Look up ODI 11472868 at NHTSA ↗
Owner report 11483597 · 2022-09-08 (September 8, 2022)
On September 3, 2022 while traveling east on AL highway 110 the sunroof exploded as i was driving. Notified Montgomery county sheriff Department but they refuse to do a report because it wasn’t an accident. The dealership said something had to hit the sunroof for it to Shadder. Explained to the service advisor that there were no other vehicles in the area when the incident happened, so what could have hit it. Was informed by the service advisor that the car didn’t have a recall for the sunroof on this particular model.
Owner-reported narrative. Look up ODI 11483597 at NHTSA ↗
Owner report 11496487 · 2022-12-07 (December 7, 2022)
Front right ball joint separated from lower control arm with no advance warning and the drive shaft was disconnected from the vehicle body. I was travelling at about 15 mph in a straight line through an intersection on a flat surface with no potholes. Then I saw a warning of a transmission fault in my instrument cluster, followed by a loud grinding sound. My car then came to a stop and I was unable to move the vehicle in Forward or Reverse gear. I ignition cycled the vehicle and tried forward/reverse, then someone told me that my front right …
Owner-reported narrative. Look up ODI 11496487 at NHTSA ↗
Owner report 11503216 · 2023-01-23 (January 23, 2023)
The contact owns a 2021 Mercedes-Benz GLB250. The contact received notification of NHTSA Campaign Number: 21V354000 (Back Over Prevention, Electrical System) however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that several unknown local dealers were contacted, and the contact was referred to the manufacturer for further assistance. The manufacturer was contacted, and a case was opened. The contact had not experience…
Owner-reported narrative. Look up ODI 11503216 at NHTSA ↗
Owner report 11520946 · 2023-05-08 (May 8, 2023)
The car has 29,000 miles and I took it on a two day trip across part of the country. It was driven hard but had a oil change before leaving. After arriving home it started to sputter and have no "energy". I had the cabin filter and engine filter changed and another oil change just in case. took it to deal as it continued to sputter, even worse, jerk forward. It blew a cylinder head. Checking the internet I find that this is a usual problem with this year and model car. Why isn't it in the recall if a lot of this model has this problem?
Owner-reported narrative. Look up ODI 11520946 at NHTSA ↗
Recall history
11 distinct campaigns affect this selection. Announcement dates below are different from vehicle model years. A campaign may cover multiple years.
21V058000 · Communication: Auto Crash Notification | Electrical System:Software
Reported: 2021-02-05 (February 5, 2021)
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.
Consequence: Failure of the eCall system may result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash.
Remedy: 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.
NHTSA campaign record ↗21V231000 · Structure:Body:Tailgate
Reported: 2021-04-01 (April 1, 2021)
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.
Consequence: Detached spoilers can create a road hazard, increasing the risk of a crash or injury.
Remedy: 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.
NHTSA campaign record ↗21V232000 · Structure:Body
Reported: 2021-04-01 (April 1, 2021)
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.
Consequence: Detached wheel arch covers can create a road hazard, increasing the risk of a crash or injury.
Remedy: 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.
NHTSA campaign record ↗21V354000 · Back Over Prevention: Sensing System: Camera | Electrical System:Software
Reported: 2021-05-14 (May 14, 2021)
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."
Consequence: A backup camera that displays a blank image reduces the driver's rear view, increasing the risk of a crash or injury.
Remedy: 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.
NHTSA campaign record ↗21V860000 · Air Bags:Side/Window
Reported: 2021-11-05 (November 5, 2021)
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."
Consequence: The driver-side window air bag may not function properly during a crash, increasing the risk of injury.
Remedy: 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.
NHTSA campaign record ↗22V078000 · Air Bags:Frontal
Reported: 2022-02-11 (February 11, 2022)
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.
Consequence: 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.
Remedy: 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.
NHTSA campaign record ↗22V232000 · Back Over Prevention:Display Function
Reported: 2022-04-08 (April 8, 2022)
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."
Consequence: An inoperable rearview camera display reduces the driver's rear view, increasing the risk of a crash.
Remedy: 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.
NHTSA campaign record ↗22V314000 · Suspension:Rear | Exterior Lighting:Headlights | Suspension:Multiple Axle
Reported: 2022-05-09 (May 9, 2022)
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.
Consequence: Improperly leveled headlights may project a glare, which can impact other drivers and increase the risk of a crash.
Remedy: 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.
NHTSA campaign record ↗22V365000 · Communication: Auto Crash Notification | Electrical System:Software
Reported: 2022-05-20 (May 20, 2022)
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.
Consequence: 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.
Remedy: 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.
NHTSA campaign record ↗22V679000 · Electronic Stability Control (Esc):Control Module
Reported: 2022-09-12 (September 12, 2022)
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.
Consequence: 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.
Remedy: 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.
NHTSA campaign record ↗26V481000 · Latches/Locks/Linkages:Doors:Lock
Reported: 2026-07-24 (July 24, 2026)
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.
Consequence: A vehicle rollaway increases the risk of a crash or injury.
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.
NHTSA campaign record ↗