Audi A3: lighting & signalling MOT failures
Lighting & signalling was a recorded failure area in 7.0% of Audi A3 MOT tests in this dataset. It is most prominent on 2002, 2003 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 | 4,751 | 15.1% |
| 2001 | 7,127 | 17.4% |
| 2002 | 10,391 | 19.4% |
| 2003 | 14,439 | 18.7% |
| 2004 | 31,713 | 18.2% |
| 2005 | 66,781 | 14.7% |
| 2006 | 94,332 | 13.9% |
| 2007 | 109,632 | 13.6% |
| 2008 | 134,650 | 12.6% |
| 2009 | 152,673 | 10.2% |
| 2010 | 167,086 | 8.5% |
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.