Most common 2021 Mercedes-Benz AMG GLB35 problems
Share of the 5 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Mercedes-Benz AMG GLB35 complaints by model year
Best AMG GLB35 years: 2025. Compare all years →
2021 Mercedes-Benz AMG GLB35 recalls (8)
Latches/locks/linkages › Doors › Lock
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.
Remedy: Dealers will replace the driver's door lock, free of charge. Owner notification letters are expected to be mailed September 18, 2026.
Communication › Auto crash notification
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.
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.
Back over prevention › Display function
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.
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.
Suspension › Front
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2021 AMG GLB35, 2019-2020 A220, and 2020 GLB250 vehicles. The integral carrier that supports the front axle may corrode, causing it to fail.
Remedy: Dealers will inspect and replace the integral carrier, as necessary, free of charge. Owner notification letters were mailed July 29, 2022. Owners may contact MBUSA customer service at 1-800-367-6372.
Air bags › Side/window
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."
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.
Electrical system › Software
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.
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.
Show 2 more recalls
Structure › Body › Tailgate
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.
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.
Communication › Auto crash notification
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.
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.
2021 Mercedes-Benz AMG GLB35 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 2.0L 4-cyl turbo | 8-speed dual-clutch | 4WD | 21 / 26 / 23 |
EPA ratings. Class: Wagon.
Frequently asked questions
Is the 2021 Mercedes-Benz AMG GLB35 a good car?
That is a low number of complaints for a car on sale this long. So far owners have filed 5 complaints with NHTSA.
What is the most common problem with the 2021 Mercedes-Benz AMG GLB35?
The wheels & tires — 1 complaint, 20% of all complaints for this model year, most often about hubcap/cover. Next are the windows, wipers & sunroof (1) and brakes (1).
How many recalls does the 2021 Mercedes-Benz AMG GLB35 have?
There are 8 recalls for the 2021 Mercedes-Benz AMG GLB35, the most recent from July 24, 2026 (lock). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Mercedes-Benz AMG GLB35?
The best years by complaints, compared at the same age, are 2025. See the full Mercedes-Benz AMG GLB35 years comparison.
At what mileage do 2021 Mercedes-Benz AMG GLB35 problems happen?
The median mileage reported in complaints is about 52,000 miles; 33% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.