Vespa (douglas) 150 Super: MOT pass rate by registration year

Which 150 Super years pass first time, and which fall short of the model's 83.4% average, from 579 DVSA tests.

1965

highest-passing year · 92.9%

1975

lowest-passing year · 84.3%

8.6pp

spread across 3 years

Pass rate by registration year

first-time pass rate · cohorts with 50 or more tests · registration year from first use date

Highest pass rate: 1965 (92.9% of 56 tests). Lowest: 1975 (84.3% of 51).

Registered	Tests	First-time pass	vs model (83.4%)
1965	56	92.9%	+9.5 pp
1966	140	86.4%	+3.0 pp
1975	51	84.3%	+0.9 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

first-time pass rate by test year · 2007–2017

Questions

Which 150 Super years have the lowest MOT pass rate?: none: no registration year of the Vespa (douglas) 150 Super falls more than two points under the model's 83.4% overall pass rate.
Which 150 Super year has the highest MOT pass rate?: 1965, at 92.9% of 56 first tests (2005–2025). Years more than two points above the model average: 1965, 1966.
How much does the 150 Super pass rate vary by year?: 8.6 percentage points between the highest (1965, 92.9%) and lowest (1975, 84.3%) 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) 150 Super reliability, failures and mileage · ranked #2868 of 5428 models· other Vespa (douglas) models: PX125, P200E, T5, PX125E, Douglas, PX