Vauxhall Insignia: lighting & signalling MOT failures
Lighting & signalling was a recorded failure area in 8.3% of Vauxhall Insignia MOT tests in this dataset. It is most prominent on 2015, 2017 cars.
Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair cost: £10–£150 (rough UK ballpark, not a quote).
Lighting & signalling failures by year
| Model year | Tests | Fail rate |
|---|---|---|
| 2015 | 180,673 | 6.4% |
| 2017 | 92,110 | 4.1% |
| 2018 | 73,766 | 3.0% |
| 2019 | 37,680 | 2.9% |
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.