Every 2021 Mercedes-Benz GLB recall
Each campaign as NHTSA published it: what is wrong, what can happen, and the fix. Newest first.
Latches/Locks/Linkages · NHTSA 26V481000
Jul 24, 2026Latches/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.
Full recall details for 26V481000 →Back Over Prevention · NHTSA 22V232000
Aug 4, 2022Back 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.
Full recall details for 22V232000 →Electrical System · NHTSA 22V365000
May 20, 2022Electrical System:SoftwareOver-the-air fix
- 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.
Full recall details for 22V365000 →Back Over Prevention · NHTSA 21V354000
May 14, 2021Back Over Prevention: Sensing System: CameraOver-the-air fix
- 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.
Full recall details for 21V354000 →Electrical System · NHTSA 21V058000
May 2, 2021Electrical System:SoftwareOver-the-air fix
- 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.
Full recall details for 21V058000 →
2021 Mercedes-Benz GLB complaints and service bulletins
Owners filed 31 complaints with NHTSA about the 2021 Mercedes-Benz GLB. Mercedes-Benz has issued at least 225 technical service bulletins (repair instructions to dealers) for this model year. Complaints are unverified owner reports; a recall is the manufacturer’s admission of a safety defect.
Most-reported components
- Unknown Or Other10
- Engine9
- Electrical System5
- Suspension4
- Fuel/Propulsion System3
- Power Train3
Service bulletins by component
- Electrical System (150)
- Structure (25)
- Steering (22)
- Power Train (21)
- Equipment (18)
- Visibility/Wiper (17)
Read Mercedes-Benz GLB owner complaints and bulletins, every year
What people reported
Owners have filed 31 complaints with NHTSA about the 2021 Mercedes-Benz GLB. A few in their own words, shortened. Complaints are unverified and are not proof of a defect or of any recall.
“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.”
2021 MERCEDES-BENZ GLB 250Aug 12, 2026
Complaint filed with NHTSA, not verified by the agency · NHTSA complaint 11756454
“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.”
2021 MERCEDES-BENZ GLB 250 4MATICJul 30, 2026 · NJ
Complaint filed with NHTSA, not verified by the agency · NHTSA complaint 11753817
“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.”
2021 MERCEDES-BENZ GLB 250 4MATICJun 9, 2026 · WV
Complaint filed with NHTSA, not verified by the agency · NHTSA complaint 11742901
“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 didn't jerk the wheel on the interstate with the noise.”
2021 MERCEDES-BENZ GLB 250Apr 29, 2026 · LA
Complaint filed with NHTSA, not verified by the agency · NHTSA complaint 11734501
“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.”
2021 MERCEDES-BENZ GLB 250Mar 3, 2026 · GA
Complaint filed with NHTSA, not verified by the agency · NHTSA complaint 11721700
Check your GLB by VIN
Not every 2021 Mercedes-Benz GLB is in every recall. Enter your 17-character VIN to see the recalls on record for your exact vehicle, then confirm which are still open at NHTSA.gov or with any Mercedes-Benz dealer.
Run a free VIN recall check →