Mercedes-Benz B-Class vs Vauxhall Meriva
On MOT-testable defects, the Mercedes-Benz B-Class (fail rate 18.2%) performed better than the Vauxhall Meriva (23.9%) across comparable years. The biggest divergence was suspension, where the Meriva recorded failures more often.
18.2%
B-Class fail rate
23.9%
Meriva fail rate
5.74pp
Difference
Side by side
| Metric | Mercedes-Benz B-Class | Vauxhall Meriva |
|---|---|---|
| MOT tests analysed | 429,942 | 644,285 |
| Pass rate | 81.8% | 76.0% |
| Fail rate | 18.2% | 23.9% |
Where they differ
| Category | B-Class | Meriva |
|---|---|---|
| Suspension | 6.7% | 12.5% |
| Lighting & signalling | 8.2% | 10.6% |
| Brakes | 5.0% | 7.1% |
| Visibility | 3.2% | 4.2% |
| Tyres | 5.6% | 5.9% |
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.