Data as of: DVSA MOT results to 2025
Yamaha DT250: MOT pass rate by registration year
Which DT250 years pass first time, and which fall short of the model's 80.1% average, from 806 DVSA tests.
Pass rate by registration year
Highest pass rate: 1981 (86.7% of 128 tests). Lowest: 1978 (72.5% of 91). Years more than two points below the model average: 1977, 1978.
| Registered | Tests | First-time pass | vs model (80.1%) |
|---|---|---|---|
| 1976 | 78 | 84.6% | +4.5 pp |
| 1977 | 115 | 77.4% | -2.7 pp |
| 1978 | 91 | 72.5% | -7.6 pp |
| 1979 | 134 | 84.3% | +4.2 pp |
| 1980 | 89 | 82.0% | +1.9 pp |
| 1981 | 128 | 86.7% | +6.6 pp |
Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years. A first-time MOT pass is a roadworthiness check, not a full mechanical inspection.
Pass rate over time
Questions
- Which DT250 years have the lowest MOT pass rate?
- 1977, 1978 registered examples pass first time less often than the Yamaha DT250 overall (80.1%); the 1978 cohort is lowest at 72.5% from 91 tests.
- Which DT250 year has the highest MOT pass rate?
- 1981, at 86.7% of 128 first tests (2005–2025). Years more than two points above the model average: 1976, 1979, 1981.
- How much does the DT250 pass rate vary by year?
- 14.2 percentage points between the highest (1981, 86.7%) and lowest (1978, 72.5%) cohorts with at least 50 tests. Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.
Full report: Yamaha DT250 reliability, failures and mileage · ranked #3557 of 5428 models· other Yamaha models: YZF-R1, YZF-R6, FZS600, YBR 125, XJR1300, FZ6