Daihatsu Sirion MOT data by year
The Daihatsu Sirion appears in 42,223 MOT tests in this dataset across model years 1998–2021. Its most common failure areas are suspension, lighting & signalling and brakes, and its overall pass rate is 76.2%.
42,223
MOT tests analysed
76.2%
Pass rate
23.8%
Fail rate
1998–2021
Years covered
By model year
| Year | Tests | Pass rate | Fail rate | Most common failure |
|---|
Most common failures (all years)
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Suspension | 12.8% | 5,408 |
| 2 | Lighting & signalling | 11.0% | 4,640 |
| 3 | Brakes | 7.4% | 3,108 |
| 4 | Visibility | 5.4% | 2,276 |
| 5 | Body, structure & corrosion | 4.8% | 2,026 |
| 6 | Tyres | 4.3% | 1,798 |
| 7 | Emissions & environmental | 3.7% | 1,550 |
| 8 | Steering | 2.3% | 985 |
Methodology & source. Based on 42,223 MOT tests. 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.