Vauxhall Cavalier: emissions & environmental MOT failures
Emissions & environmental was a recorded failure area in 6.7% of Vauxhall Cavalier MOT tests in this dataset. It is most prominent on 1992, 1993 cars.
More common on older diesels (DPF/EGR) — can be expensive; check for warning lights and smoke. Typical repair cost: £100–£600 (rough UK ballpark, not a quote).
Emissions & environmental failures by year
| Model year | Tests | Fail rate |
|---|---|---|
| 1992 | 483 | 5.2% |
| 1993 | 1,230 | 7.4% |
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.