Toyota Yaris: lighting & signalling MOT failures
Of the 2,673,900 Toyota Yaris MOT tests in this dataset, 11.6% recorded at least one lighting & signalling failure. It shows up most on 2003 and 2004 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 |
|---|---|---|
| 1999 | 9,301 | 16.0% |
| 2000 | 29,077 | 15.8% |
| 2001 | 54,931 | 17.5% |
| 2002 | 69,740 | 19.7% |
| 2003 | 88,525 | 22.1% |
| 2004 | 102,219 | 21.8% |
| 2005 | 119,971 | 21.8% |
| 2006 | 120,027 | 21.3% |
| 2007 | 141,634 | 20.2% |
| 2008 | 149,065 | 16.4% |
| 2009 | 155,412 | 11.5% |
| 2010 | 117,485 | 11.1% |
| 2011 | 97,453 | 11.3% |
| 2012 | 164,673 | 11.8% |
| 2013 | 172,204 | 10.3% |
| 2014 | 169,428 | 8.4% |
| 2015 | 171,548 | 6.8% |
| 2016 | 156,697 | 5.8% |
| 2017 | 148,025 | 4.5% |
| 2018 | 151,662 | 3.6% |
| 2019 | 121,719 | 3.1% |
| 2020 | 66,453 | 2.6% |
| 2021 | 55,553 | 1.5% |
| 2022 | 38,791 | 1.9% |
| 2023 | 2,193 | 2.0% |
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.