SEAT Leon: lighting & signalling MOT failures
Lighting & signalling was recorded as a failure area in 5.5% of SEAT Leon MOT tests — 58,526 tests out of 1,064,102. 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 |
|---|---|---|
| 2000 | 581 | 15.2% |
| 2001 | 2,261 | 15.1% |
| 2002 | 4,592 | 15.6% |
| 2003 | 8,878 | 16.6% |
| 2004 | 11,284 | 15.7% |
| 2005 | 13,724 | 15.1% |
| 2006 | 23,713 | 14.1% |
| 2007 | 33,735 | 13.5% |
| 2008 | 34,160 | 12.7% |
| 2009 | 34,499 | 11.3% |
| 2010 | 39,536 | 9.5% |
| 2011 | 43,340 | 9.0% |
| 2012 | 56,567 | 8.5% |
| 2013 | 70,147 | 6.1% |
| 2014 | 109,384 | 4.2% |
| 2015 | 99,174 | 2.9% |
| 2016 | 90,215 | 2.3% |
| 2017 | 103,240 | 2.7% |
| 2018 | 119,860 | 2.5% |
| 2019 | 89,953 | 2.6% |
| 2020 | 46,309 | 2.3% |
| 2021 | 24,761 | 1.9% |
| 2022 | 4,080 | 1.8% |
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.