The contact owns a 2021 Mercedes-Benz AMG GLB35. The contact stated that while reversing down the driveway at approximately 4 MPH, the contact turned the steering wheel to the left and the vehicle started losing motive power. The contact stated that the RPMs were extremely high and the vehicle almost stalled. The contact stated no warning light was illuminated. The contact stated that the failure was intermittent and occurred at slower speeds between 3 and 6 MPH. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that the driver's side front axle had failed and needed to be replaced. The vehicle was not repaired. The contact researched online and related the failure to a manufacturer's recall for replacing the front axle integral carrier. The manufacturer was informed of the failure and advised the contact that the vehicle was not included in the manufacturer's recall selection. The manufacturer referred the contact to the federal safety agency Hotline for assistance. The failure mileage was approximately 55,000.
The worst 2021 Mercedes-Benz AMG Glb35 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Brakes1
- Engine1
- Suspension1
- Transmission1
- Visibility1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Brakes1
- Engine1
- Suspension1
- Transmission1
- Visibility1
- Wheels1
Recalls 8
Latches/locks/linkages: doors: lock
- What is wrong
- 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.
- Remedy
- 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 beginning July 31, 2026.
Recall number 26V481000 · Recall details
Electrical system: software
- What is wrong
- 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.
- 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.
Recall number 22V365000 · Recall details
Back over prevention: display function
- What is wrong
- 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.
- 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.
Recall number 22V232000 · Recall details
Suspension: front
- What is wrong
- 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.
- Risk
- Front axle carrier failure may result in a loss of steering control, increasing the risk of a crash.
- 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. MBUSA's number for this recall is 2022070009.
Recall number 21V990000 · Recall details
Air bags: side/window
- What is wrong
- 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.
- 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.
Recall number 21V860000 · Recall details
Back over prevention: sensing system: camera
- What is wrong
- 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.
- 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.
Recall number 21V354000 · Recall details
Structure: body: tailgate
- What is wrong
- 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.
- 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.
Recall number 21V231000 · Recall details
Electrical system: software
- What is wrong
- 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.
- 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.
Recall number 21V058000 · Recall details
Technical service bulletins for the 2021 Mercedes-Benz AMG Glb35 218
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Dear Mercedes-Benz Owner: In our continuing efforts to ensure the proper performance of Mercedes-Benz...
- Fuel/propulsion system
- In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the...
- • While driving, engine speed may increase with accelerator pedal input while vehicle acceleration remains...
- Slight creaking noises when steering
- Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE: Although the symptom is...
- Radio station cover art does not refresh when switching stations
- Clanking noise from the area of the speakers in the doors
- Temporary no start condition with check engine light and multiple warning messages
- Intermittent shift feel or thud/clunk noise perceived, such as a brief jerk or transmission reaction...
What 2021 Mercedes-Benz AMG Glb35 owners say
Most recent owner complaints, unedited.
On 4/13/25 while driving my car on the highway, along with my 2 young children, I began to hear what initally sounded like a "flapping" noise. I rolled the windows down and after a minute or 2 the sound got lounder. There was never a warning or any type of safety icon that appeared on the control panel, nor any driving performance issue before hand. Shortly after the initial noise I could tell the car was struggling to accelerate. I wasn't near an exit during this time and began to panic in fear the car would shut down and I had no safe place to pull over on that stretch of highway. The noise turned into a banging within another min or so and I finally noticed an exit up ahead. Almost immediately as I excited the highway, the car completely shut down with me having practically no control of the steering wheel and unable to put the car into neutral. I coasted to the stop sign at the end of the exit ramp. The car would not restart after 2 attempts, I stepped out to see a massive amount of oil coming from under the car. The car recently had the 4th cylinder head replaced in Jan 2025 and was in the shop for almost 1 month. I was assured the engine was safe to drive after that repair. It has remained unserviced at the dealership since 4/13/25 and was informed it has catastrophic engine failure due to a thrown rod with Cylinder 2 being the "source of the failure." The dealership has quoted a $28k+ repair bill and Mercedes corporate has refused to replace it with a "goodwill" gesture. Only offering $1,500 toward repairs and no reimbursement for any of the 4 rental cars Ive obtained since my vehicle has been inoperable. I was not informed at the time of my purchase about any defects on the M260 engines faulty cylinder head & Mercedes extending a warrenty due to such. They are refusing to accept liability for the cacade of damage & ultimate engine failure steming from now cylinder 2. This event risked the lives of my children's and myself due to Mercedes negligence.
The contact owned a 2021 Mercedes-Benz GLB35. The contact stated while driving at 35 MPH, the brake pedal was depressed; however, the vehicle failed to stop as intended. There was no warning light illuminated. The contact stated that neither the dealer nor an independent mechanic was contacted. The vehicle was not diagnosed or repaired. The contact stated that the vehicle was serviced months before the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 52,000.
I was driving home on a residential street at approximately 30 MPH. I heard a loud pop or bang sound coming from the top middle area of my windshield. I checked for any windshield damage, observed none. I thought the whole noise strange as nothing had hit my car or windshield. A couple days later I noticed that the glass panel between the windshield and sunroof, was completely shattered, with a horizontal crack running across the panel. I also noticed that the framing between the panel and windshield was not right. It sort of was "popped" outward. There was no warning regarding this failure. I had hand washed the vehicle 3 days prior and everything looked fine. I have had conversations with my local dealer regarding this issue and so far, am getting considerable push back, that this is my problem. Even though this problem seems very similar to the once experienced by the MB 2017-2020 C class, where this panel failed, and the sunroofs blew off. I am taking the car in to the dealer today for them to look at.
The contact owns a 2021 Mercedes-Benz AMG GLB35. The contact stated he became aware that 3 out of 4 of the wheel-hub caps were missing. The contact called the local dealer and made them aware of the failure. The vehicle was not diagnosed or repaired. Upon investigation, the contact associated the failure with the federal safety agency Campaign Number: 20V800000 (Wheels) however, the VIN was not included. The manufacturer had not been informed of the failure. The failure mileage was approximately 22,000. Consumer is still waiting for trim replacement.
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Questions about the 2021 Mercedes-Benz AMG Glb35
Is the 2021 Mercedes-Benz AMG Glb35 reliable?
Owners have filed 5 complaints about the 2021 Mercedes-Benz AMG Glb35, 2.5 times a typical AMG Glb35 model year.
What is the most common problem with the 2021 Mercedes-Benz AMG Glb35?
Brakes, with 1 complaint. Next is engine (1).
How many recalls does the 2021 Mercedes-Benz AMG Glb35 have?
8 recalls, covering latches/locks/linkages, electrical system and back over prevention.
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