Data as of: DVSA MOT results to 2025
Yamaha DT50: MOT pass rate by registration year
Which DT50 years pass first time, and which fall short of the model's 60.5% average, from 2,974 DVSA tests.
Pass rate by registration year
Highest pass rate: 1983 (69.8% of 63 tests). Lowest: 2003 (49.6% of 133). Years more than two points below the model average: 1982, 1992, 1993, 2002, 2003, 2004, 2005.
| Registered | Tests | First-time pass | vs model (60.5%) |
|---|---|---|---|
| 1982 | 84 | 56.0% | -4.5 pp |
| 1983 | 63 | 69.8% | +9.3 pp |
| 1984 | 87 | 65.5% | +5.0 pp |
| 1985 | 75 | 68.0% | +7.5 pp |
| 1986 | 102 | 63.7% | +3.2 pp |
| 1987 | 149 | 60.4% | -0.1 pp |
| 1988 | 220 | 61.4% | +0.9 pp |
| 1989 | 339 | 61.1% | +0.6 pp |
| 1990 | 309 | 59.5% | -1.0 pp |
| 1991 | 170 | 64.1% | +3.6 pp |
| 1992 | 60 | 58.3% | -2.2 pp |
| 1993 | 98 | 56.1% | -4.4 pp |
| 1994 | 186 | 64.5% | +4.0 pp |
| 1995 | 124 | 63.7% | +3.2 pp |
| 1996 | 90 | 64.4% | +3.9 pp |
| 2002 | 60 | 53.3% | -7.2 pp |
| 2003 | 133 | 49.6% | -10.9 pp |
| 2004 | 215 | 53.5% | -7.0 pp |
| 2005 | 152 | 51.3% | -9.2 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 DT50 years have the lowest MOT pass rate?
- 1982, 1992, 1993, 2002, 2003, 2004, 2005 registered examples pass first time less often than the Yamaha DT50 overall (60.5%); the 2003 cohort is lowest at 49.6% from 133 tests.
- Which DT50 year has the highest MOT pass rate?
- 1983, at 69.8% of 63 first tests (2005–2025). Years more than two points above the model average: 1983, 1984, 1985, 1986, 1991, 1994, 1995, 1996.
- How much does the DT50 pass rate vary by year?
- 20.2 percentage points between the highest (1983, 69.8%) and lowest (2003, 49.6%) 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 DT50 reliability, failures and mileage · ranked #5195 of 5428 models· other Yamaha models: YZF-R1, YZF-R6, FZS600, YBR 125, XJR1300, FZ6