Audi Tt: lighting & signalling MOT failures
Lighting & signalling was a recorded failure area in 7.3% of Audi Tt MOT tests in this dataset. It is most prominent on 1999, 2001 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 | 2,652 | 16.6% |
| 2000 | 13,140 | 15.1% |
| 2001 | 20,723 | 16.1% |
| 2002 | 30,275 | 15.8% |
| 2003 | 33,755 | 15.3% |
| 2004 | 32,500 | 14.2% |
| 2005 | 24,738 | 13.9% |
| 2006 | 19,721 | 12.4% |
| 2007 | 50,786 | 10.2% |
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.