10,548 tests in 2025
Daihatsu MOT pass rates
Daihatsu’s first-time fail rate across 4 models was 32.3%, worse than the national 22.6%. The spread between models below is the interesting part.
| Model | Tests | Pass rate | Fail rate | Median miles |
|---|---|---|---|---|
| Sirion | 5,027 | 67.6% | 32.4% | 70,762 |
| Terios | 3,278 | 64.6% | 35.4% | 89,287 |
| Copen | 1,148 | 72.9% | 27.1% | 58,651 |
| Fourtrak | 1,095 | 71.5% | 28.5% | 117,501 |
Fail rates are first attempts at class 4 normal tests in 2025, from DVSA’s anonymised data (retrieved 2026-09-12). Age mix drives a lot of the spread: a model sold mostly since 2020 will beat one whose survivors average 15 years old. Each model page shows the rate by age band.