MOT data
Mercedes-Benz GLB MOT fail rate by age and year
DVSA MOT tests 2022–2025 · 21,415 MOT tests · Updated
At 3 years, 9.4% of Mercedes-Benz GLB MOT tests ended in a fail (adjusted to typical mileage), against 12.0% for all class 4 vehicles tested at 3 (12,047 MOT tests) [1].
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- First used 2021: 2.9 pts below cars the same age, 8,260 MOT tests
- Mileage: median 25,998 miles at 3 years against 22,806 for all class 4 vehicles, 12,047 MOT tests
- Before the mileage adjustment: 9.2% of MOT tests at 3 years ended in a fail, 12,047 MOT tests
Which engine and year a car has decides which of these apply. Check the reg first.
Figures are for the model, not one car, and compare with all class 4 vehicles tested at 3 in the same test year.
- Fail rate at 3 years, typical mileage
- 9.4%
- vs 12.0% for all class 4 vehicles tested at 3
- 12,047 MOT tests
- Fail rate at 3 years, raw
- 9.2%
- vs 12.0% for all class 4 vehicles tested at 3
- 12,047 MOT tests
- Rank at 3 years
- 38 of 207
- 1 = fewest fails at typical mileage, among models with 5,000+ MOT tests at 3
- 12,047 MOT tests
- Median mileage at 3 years
- 25,998 mi
- vs 22,806 mi for all class 4 vehicles
- 12,047 MOT tests
Mercedes-Benz GLB MOT fail rate by age
Each line follows the cars first used in one year across the ages they were tested at from 2022 to 2025, so a line never mixes a 2005 car with a 2015 one. 21k DVSA MOT tests in all (21,415).
At 3 years and typical mileage that is 21% fewer fails than all class 4 vehicles tested at 3 (12,047 MOT tests).
| Age | Raw | Typical mileage | All class 4 |
|---|---|---|---|
| 3 | 9.2% | 9.4% | 12.0% |
| 4 | 10.8% | 10.6% | 12.9% |
| 5 | 11.7% | 11.6% | 14.0% |
Lower MOT fail rate than average: 9.2% raw · 9.4% at typical mileage, against 12.0% for all class 4 vehicles tested at 3, 12,047 MOT tests. Which years? See the full verdict
First-use year with fewer MOT fails than cars the same age: 2021 (raw rates, not adjusted for mileage; each against 8,260 or more MOT tests).
What fails on a Mercedes-Benz GLB at 3 years
No part fails clearly more or less often than on cars the same age at 3 or more ages up to 18 years, so each is shown as about average.
| Part | Per 100 | All class 4 | Compared | Most common fail |
|---|---|---|---|---|
| Tyres | 4.5 | 4.8 | about average for cars the same age | Tyre has a cut in excess of the requirements deep enough to reach the ply or cords (MOT fail) |
| Brakes | 1.4 | 1.7 | about average for cars the same age | Brake pad(s) less than 1.5 mm thick (MOT fail) |
| Lights and electrics | 1.4 | 2.9 | about average for cars the same age | Headlamp aim too high (MOT fail) |
| Visibility | 1.3 | 2.8 | about average for cars the same age | Windscreen wiper does not clear the windscreen effectively (MOT fail) |
| Seat belts and airbags | 0.5 | 0.3 | about average for cars the same age | Airbag (SRS) warning lamp indicates a fault (MOT fail) |
| Suspension | 0.4 | 0.6 | about average for cars the same age |
Buying a Mercedes-Benz GLB? Check that exact car before the viewing.
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- Model risks for this year and fuel
- What similar cars did at their next MOT
- Repairs ahead
- Viewing checklist
Check one Mercedes-Benz GLB, not the average
The figures here describe Mercedes-Benz GLB cars as a group. A registration shows one car's own DVSA record: its MOT tests, the mileage at each test and the recall flag.
- Check a Mercedes-Benz GLB's MOT history Every MOT test, fail item, advisory and mileage reading DVSA holds for that registration.
- Mileage check on a Mercedes-Benz GLB The odometer reading from each MOT, with drops, jumps and long gaps flagged.
- Check a Mercedes-Benz GLB for an outstanding recall Whether DVSA's MOT record flags an outstanding safety recall for that registration.
More Mercedes-Benz GLB data
Mercedes-Benz GLB recalls
24 DVSA recalls list this model by name [2]. Vehicles are DVSA's count of affected Mercedes-Benz GLB vehicles. The latest:
- R/2026/315 SRPC-2608 Electric drive unit power electronics (1 vehicle of this model), built Mar 2025 to Mar 2025. From the recall's stated risk: “Mercedes-Benz AG has determined that in certain CLA (174 platform) and GLB (244 platform) vehicles the circuit board for the power electronics of the rear…”
- R/2026/203 Software version of communication module (32 vehicles of this model), built Nov 2025 to Feb 2026. From the recall's stated risk: “Mercedes-Benz AG has determined that on certain CLA (174 platform) and GLB (244 platform) vehicles the software of the communication module might not meet…”
- R/2024/441 SRPC2418 - Surface inner tyre side wall (466 vehicles of this model), built Jun 2024 to Jul 2024. From the recall's stated risk: “Mercedes-Benz AG has determined that the surface of the inner side wall of right-side installed tyres on certain GLB (247 platform) vehicles might be damaged.”
Ask the seller for proof the work was done. Check any car on GOV.UK
Mercedes-Benz GLB against similar cars at 3 years
Same class and fuel, all tested at 3 years, at typical mileage.
| Model | Fail rate | 95% range | MOT tests |
|---|---|---|---|
| Mercedes-Benz GLB | 9.4% | 8.9% to 10.0% | 12,047 |
| Nissan Qashqai MOT fail rate | 10.3% | 10.1% to 10.4% | 160,434 |
| Kia Sportage MOT fail rate | 14.4% | 14.2% to 14.6% | 111,057 |
| Ford Kuga MOT fail rate | 10.5% | 10.3% to 10.7% | 105,855 |
| Volkswagen Tiguan MOT fail rate | 10.9% | 10.7% to 11.1% | 100,852 |
| Hyundai Tucson MOT fail rate | 12.7% | 12.5% to 13.0% | 91,328 |
| Volvo XC40 MOT fail rate | 9.3% | 9.1% to 9.5% | 82,664 |
| Land Rover Range Rover Evoque MOT fail rate | 11.7% | 11.4% to 11.9% | 66,768 |
| Vauxhall Grandland MOT fail rate | 11.4% | 11.2% to 11.7% | 61,758 |
Other Mercedes-Benz models
More Mercedes-Benz GLB data
Years
Running costs
By part
Questions people ask
How often does a Mercedes-Benz GLB fail its MOT at 3 years?
9.4% of MOT tests at 3 years ended in a fail at typical mileage (9.2% as tested), from 12,047 MOT tests, against 12.0% for all class 4 vehicles the same age; the Nissan Qashqai was at 10.3%.
What fails most on a Mercedes-Benz GLB at 3 years?
4.5 in 100 MOT tests at 3 years failed on tyres, most often "tyre has a cut in excess of the requirements deep enough to reach the ply or cords", then brakes (1.4) and lights and electrics (1.4), from 12,047 MOT tests.
How does the Mercedes-Benz GLB compare with the Nissan Qashqai?
At 3 years the Mercedes-Benz GLB failed 9.4% of MOT tests at typical mileage, the Nissan Qashqai 10.3% and the Kia Sportage 14.4%, from 12,047, 160,434 and 111,057 MOT tests.
Sources
- Driver and Vehicle Standards Agency, Anonymised MOT tests and results, 2022 to 2025. DVSA MOT data, Open Government Licence v3.0, 21,415 MOT tests. Accessed 7 Oct 2026.
- Driver and Vehicle Standards Agency, Vehicle safety recalls data. DVSA recall data. Accessed 7 Oct 2026.
Cars tested at 3 years are compared only with vehicles tested at 3 years in the same year, adjusted to typical mileage. Breakdowns and non-MOT faults are not in this data.