Data as of: DVSA MOT results to 2025
Lambretta 150LI: MOT pass rate by registration year
Which 150LI years pass first time, and which fall short of the model's 87.5% average, from 806 DVSA tests.
Pass rate by registration year
Highest pass rate: 1961 (91.7% of 60 tests). Lowest: 1963 (83.8% of 74). Years more than two points below the model average: 1963, 1964.
| Registered | Tests | First-time pass | vs model (87.5%) |
|---|---|---|---|
| 1960 | 152 | 88.8% | +1.3 pp |
| 1961 | 60 | 91.7% | +4.2 pp |
| 1963 | 74 | 83.8% | -3.7 pp |
| 1964 | 112 | 84.8% | -2.7 pp |
| 1965 | 57 | 86.0% | -1.5 pp |
| 1966 | 54 | 88.9% | +1.4 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 150LI years have the lowest MOT pass rate?
- 1963, 1964 registered examples pass first time less often than the Lambretta 150LI overall (87.5%); the 1963 cohort is lowest at 83.8% from 74 tests.
- Which 150LI year has the highest MOT pass rate?
- 1961, at 91.7% of 60 first tests (2005–2025).
- How much does the 150LI pass rate vary by year?
- 7.9 percentage points between the highest (1961, 91.7%) and lowest (1963, 83.8%) 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: Lambretta 150LI reliability, failures and mileage · ranked #1750 of 5428 models· other Lambretta models: LI125, GP200, LI150, GP150, GP125, Li