Mercedes-Benz B-Class: brakes MOT failures
Brakes was a recorded failure area in 5.0% of Mercedes-Benz B-Class MOT tests in this dataset. It is most prominent on 2006, 2008 cars.
Pads/discs are routine wear; binding, imbalance or corroded pipes are more serious — test for pulling under braking. Typical repair cost: £100–£350 per axle (rough UK ballpark, not a quote).
Brakes failures by year
| Model year | Tests | Fail rate |
|---|---|---|
| 2005 | 3,546 | 10.8% |
| 2006 | 16,266 | 11.4% |
| 2007 | 20,165 | 10.9% |
| 2008 | 25,457 | 11.3% |
| 2009 | 30,409 | 10.0% |
| 2010 | 31,153 | 9.0% |
| 2011 | 23,983 | 8.3% |
Methodology & source. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-01. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.