Data as of: DVSA MOT results to 2025
Vespa (douglas) PK50: MOT pass rate by registration year
Which PK50 years pass first time, and which fall short of the model's 79.9% average, from 542 DVSA tests.
Pass rate by registration year
Highest pass rate: 1988 (87.1% of 62 tests). Lowest: 1984 (68.0% of 50). Years more than two points below the model average: 1983, 1984, 1986.
| Registered | Tests | First-time pass | vs model (79.9%) |
|---|---|---|---|
| 1983 | 63 | 68.3% | -11.6 pp |
| 1984 | 50 | 68.0% | -11.9 pp |
| 1985 | 89 | 80.9% | +1.0 pp |
| 1986 | 77 | 76.6% | -3.3 pp |
| 1987 | 54 | 87.0% | +7.1 pp |
| 1988 | 62 | 87.1% | +7.2 pp |
| 1989 | 50 | 86.0% | +6.1 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 PK50 years have the lowest MOT pass rate?
- 1983, 1984, 1986 registered examples pass first time less often than the Vespa (douglas) PK50 overall (79.9%); the 1984 cohort is lowest at 68.0% from 50 tests.
- Which PK50 year has the highest MOT pass rate?
- 1988, at 87.1% of 62 first tests (2005–2025). Years more than two points above the model average: 1987, 1988, 1989.
- How much does the PK50 pass rate vary by year?
- 19.1 percentage points between the highest (1988, 87.1%) and lowest (1984, 68.0%) 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: Vespa (douglas) PK50 reliability, failures and mileage · ranked #3603 of 5428 models· other Vespa (douglas) models: PX125, P200E, T5, PX125E, Douglas, PX