Data as of: DVSA MOT results to 2025
Triumph T150: MOT pass rate by registration year
Which T150 years pass first time, and which fall short of the model's 88.8% average, from 821 DVSA tests.
Pass rate by registration year
Highest pass rate: 1969 (94.5% of 55 tests). Lowest: 1972 (86.5% of 104). Years more than two points below the model average: 1972.
| Registered | Tests | First-time pass | vs model (88.8%) |
|---|---|---|---|
| 1969 | 55 | 94.5% | +5.7 pp |
| 1971 | 195 | 90.8% | +2.0 pp |
| 1972 | 104 | 86.5% | -2.3 pp |
| 1973 | 133 | 91.0% | +2.2 pp |
| 1974 | 99 | 88.9% | +0.1 pp |
| 1975 | 140 | 87.9% | -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
Questions
- Which T150 years have the lowest MOT pass rate?
- 1972 registered examples pass first time less often than the Triumph T150 overall (88.8%); the 1972 cohort is lowest at 86.5% from 104 tests.
- Which T150 year has the highest MOT pass rate?
- 1969, at 94.5% of 55 first tests (2005–2025). Years more than two points above the model average: 1969, 1973.
- How much does the T150 pass rate vary by year?
- 8.0 percentage points between the highest (1969, 94.5%) and lowest (1972, 86.5%) 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: Triumph T150 reliability, failures and mileage · ranked #1332 of 5428 models· other Triumph models: Bonneville, Tiger, Sprint, Daytona, Speed Triple, Thunderbird