Fiat 500: lighting & signalling MOT failures
Lighting & signalling was recorded as a failure area in 7.9% of Fiat 500 MOT tests — 156,280 tests out of 1,978,225. It shows up most on 2007 and 2008 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 |
|---|---|---|
| 2007 | 940 | 17.2% |
| 2008 | 76,105 | 13.7% |
| 2009 | 133,471 | 13.1% |
| 2010 | 137,739 | 13.5% |
| 2011 | 132,245 | 13.0% |
| 2012 | 178,211 | 10.0% |
| 2013 | 208,601 | 10.0% |
| 2014 | 245,931 | 8.0% |
| 2015 | 230,546 | 6.3% |
| 2016 | 189,313 | 3.4% |
| 2017 | 131,084 | 3.3% |
| 2018 | 131,828 | 3.1% |
| 2019 | 94,364 | 2.8% |
| 2020 | 45,908 | 2.7% |
| 2021 | 27,619 | 2.5% |
| 2022 | 13,447 | 2.3% |
| 2023 | 768 | 1.4% |
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.