Mazda 6 vs Vauxhall Vectra
The Mazda 6 has the better MOT record of the two — 20.3% fail rate versus 29.6% for the Vauxhall Vectra across comparable years. The biggest single difference is suspension, where the Vectra records failures noticeably more often.
20.3%
6 fail rate
29.6%
Vectra fail rate
9.23pp
Difference
Side by side
| Metric | Mazda 6 | Vauxhall Vectra |
|---|---|---|
| MOT tests analysed | 402,150 | 274,125 |
| Pass rate | 79.7% | 70.4% |
| Fail rate | 20.3% | 29.6% |
Where they differ
| Category | 6 | Vectra |
|---|---|---|
| Suspension | 8.2% | 15.6% |
| Body, structure & corrosion | 0.0% | 6.4% |
| Brakes | 8.5% | 13.8% |
| Lighting & signalling | 8.8% | 14.0% |
| Visibility | 3.6% | 0.0% |
| Tyres | 4.9% | 6.6% |
Methodology & source. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-27. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.