Owners have filed 33 complaints on the Mercedes-Benz GLB-Class, covering 2020–2023. The system named most often is Engine (6 reports). Worst years by volume: 2020, 2023, 2022; cleanest: 2021, 2022, 2023. 1 reports describe a crash, 1 a fire. On average the car was 3.5 years old when the problem happened.
What breaks on Mercedes-Benz GLB-Class
Grouped by the system owners named — percentages are shares of all 33 GLB-Class complaints. Open any row for the full reports in owners' own words.
Engine 6 Read
Cylinder repair dealership said it's a known issue but Mercedes Benz said they will not cover the repair
On December 19, 2025, the vehicle showed lights that a sparkplug had misfired. The dealer notified me that in less than two full years of having the 2023 vehicle, it required a complete engine rebuild. This is the third major engine problem I have had with the vehicle with more than $20K in fees. The services…
Safety Risk - Twice I was almost hit because my car didn't take off. O'REILLY Veri Scan Results - Free Emissions Status: Red Primary DTC: Mixture Formation (Cylinder 4) is irregular P219F: Fuel injectors measure and atomize fuel mixed with incoming air and sent to combustion chambers. Cylinder 4 PSI at 40 Mercedes…
Power Train 4 Read
The contact owns a 2023 Mercedes-Benz GLB250. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power with the transmission warning light illuminated. The vehicle was towed to the dealer but was not diagnosed or repaired. Additionally, the contact stated that while driving at an…
My 2023 Mercedes-Benz GLB 250 is experiencing engine misfires and fault codes consistent with a known cylinder head defect that is the subject of a recall affecting 2022 and earlier models. A certified mechanic has confirmed the issue aligns with the recall defect. Despite identical symptoms and engine configuration,…
My fuel injection has been replaced 2 times in 3 years. Was advised that it could cause damages to other parts
Structure 4 Read
I am submitting this formal complaint regarding a serious safety incident involving my 2020 Mercedes-Benz GLB, which directly reflects the defect outlined in Recall 20V-480 (Rear Spoiler Detachment). Although my VIN is not officially included in the affected range, the exact failure described in the recall occurred on…
See attached document for complaint
The contact owns a 2020 Mercedes-Benz GLB250. The contact stated while driving 45 MPH, the rear spoiler detached from the vehicle. There were no warning lights illuminated. The vehicle was taken to the local dealer, where it was determined that the spoiler needed to be replaced. The vehicle was not repaired. The…
Suspension 3 Read
Despite maintaining the vehicle according to the recommended schedule, I have encountered ongoing performance issues (electrical, rear shocks, fan motor etc.) that are not in line with the standard of quality I expect from a brand of your reputation. Window not going down all the way on the driver side. Radio not…
Extended warrenty information mercedez benz has issued warrenty to that applie to condistions as listed above (exhaust valve, cyliner head ) back 08/04/2023 the car has in mercedez benz and have failed to pick on the extended warrrenty repairs and we now find out this cased more damage to the engine and needs to…
Front and rear suspension/control arms appears to have squeaky noises when approaching a turn or going a speed bump
Air Bags 3 Read
Dealership first quoted us a lower price then at the time of selling charged us more I have the proves ,then showed us this particular vehicle which they sold us with a spare tyre but took out when they handed the key,, which we realized when we were driving on the road. 2nd the trunk where the tyre was kept was…
My car has only 24533 miles and Air bag malfunction message is showing up
I have a passenger malfunction with airbags warning coming. I also just experienced getting gas. My milage counted down to zero which it never has before and my engine light came on. I went and got gas 3 times spending around $70 and my gas mileage still says 0 and my engine light is on
Electrical System 2 Read
This car really has a lot of issues and honestly if I didn’t know what to do last night and didn’t know about cars, it could have seriously cost me my life but luckily I was able to move out the way of a truck that was coming fast behind me while I was at a traffic light and when the light turned green the car would…
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. The dealer's own diagnostic tech notes stated 'software is…
Service Brakes 2 Read
Brake over heats because of rust caused by rain which builds up causing brakes to freeze up. Explanation from dealer. In fact told us we need to dry brakes off if we drive in rain and park in garage for more than 2 days or we will have it happen again. Brakes freeze and car locked up and can’t move it. We bought the…
The contact owns a 2020 Mercedes-Benz GLB250. The contact received notification of NHTSA Campaign Number: 23V732000 (Service Brakes, Hydraulic, Equipment); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall…
Visibility/wiper 1 Read
I was driving on Highway on May 19th and the Panoramic Sunroof suddenly shattered
GLB-Class years to avoid — and the clean ones
Complaints per model year. More reports usually means more cars on the road as well as more trouble, so read the crash and fire columns alongside the count.
| Model year | Complaints | Top system | Crashes | Fires |
|---|---|---|---|---|
| 2023 | Carry Handle, Shell, Base,other/i Am Not Sure | — | — | |
| 2022 | Electrical System,unknown Or Other,engine | 1 | — | |
| 2021 | Electrical System,engine | — | — | |
| 2020 | Air Bags | — | 1 |
The same model year, different builds
Every complaint carries the first 11 characters of the VIN — plant, year, body and engine. That is a production series, and complaints are spread across them very unevenly.
| Measure | Value |
|---|---|
| Distinct production series | 27 |
| Average complaints per series | 1.2 |
| Worst single series | 3 complaints |
| Average age at failure | 3.5 years |
A model average of 1.2 hides a worst series at 3. Enter a VIN above to see the numbers for that exact build instead of the model as a whole.
Owners reported these. Find out if yours is one of them.
- Complaints matched to the exact production run, not just the model
- What the car is worth given what tends to fail on it
- The original window sticker and factory options
- Full research report as a PDF for the pre-purchase inspection
- No ads, on every page
- No ads, no tracking — and much more
How we count
Every figure here comes from complaints owners filed with NHTSA — 1,100,006 of them, covering 1,982 models built between 1981 and 2026.
A complaint is an unverified report: someone wrote down what happened to their car. It is not a confirmed defect and not a recall. What makes the volume useful is the pattern — when thousands of owners of the same build describe the same failure, that is a signal no marketing brochure will give you.
Two things we do that the source does not. First, we compute the age of the car at the moment of failure from the incident date and the model year. Second, we group complaints by the first 11 characters of the VIN — the production series — so a bad plant run does not disappear into a model-wide average.
Frequently asked questions
What are the worst years for the GLB-Class?
By complaint volume, 2020, 2023, 2022 drew the most owner reports. Bear in mind that popular years put more cars on the road, so check the crash and fire columns too.
Which GLB-Class years are the cleanest?
2021, 2022, 2023 have the fewest complaints on file. For recent years that can simply mean the cars are young.
How many complaints does the Mercedes-Benz GLB-Class have?
33 owner complaints filed with NHTSA, covering 2020–2023. Of those, 1 describe a crash and 1 a fire.
Are these complaints verified?
No. They are unverified reports from owners. NHTSA publishes them as filed and investigates only a fraction. The value is in the pattern, not in any single report.
Can I check complaints for one specific car?
Yes — enter its VIN above. We match the first 11 characters, which identify the plant, year, body and engine, so you get complaints on that exact production series rather than the whole model.