Data as of: DVSA MOT results to 2025
Triumph T20: MOT pass rate by registration year
Which T20 years pass first time, and which fall short of the model's 88.1% average, from 901 DVSA tests.
Pass rate by registration year
Highest pass rate: 1966 (94.1% of 51 tests). Lowest: 1967 (84.4% of 96). Years more than two points below the model average: 1967.
| Registered | Tests | First-time pass | vs model (88.1%) |
|---|---|---|---|
| 1959 | 65 | 89.2% | +1.1 pp |
| 1960 | 109 | 92.7% | +4.6 pp |
| 1961 | 139 | 87.8% | -0.3 pp |
| 1962 | 51 | 90.2% | +2.1 pp |
| 1963 | 104 | 90.4% | +2.3 pp |
| 1964 | 61 | 91.8% | +3.7 pp |
| 1965 | 61 | 90.2% | +2.1 pp |
| 1966 | 51 | 94.1% | +6.0 pp |
| 1967 | 96 | 84.4% | -3.7 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 T20 years have the lowest MOT pass rate?
- 1967 registered examples pass first time less often than the Triumph T20 overall (88.1%); the 1967 cohort is lowest at 84.4% from 96 tests.
- Which T20 year has the highest MOT pass rate?
- 1966, at 94.1% of 51 first tests (2005–2025). Years more than two points above the model average: 1960, 1962, 1963, 1964, 1965, 1966.
- How much does the T20 pass rate vary by year?
- 9.7 percentage points between the highest (1966, 94.1%) and lowest (1967, 84.4%) 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 T20 reliability, failures and mileage · ranked #1574 of 5428 models· other Triumph models: Bonneville, Tiger, Sprint, Daytona, Speed Triple, Thunderbird