Data as of: DVSA MOT results to 2025
Triumph 6T: MOT pass rate by registration year
Which 6T years pass first time, and which fall short of the model's 91.8% average, from 1,117 DVSA tests.
Pass rate by registration year
Highest pass rate: 1958 (96.5% of 57 tests). Lowest: 1966 (85.6% of 118). Years more than two points below the model average: 1966.
| Registered | Tests | First-time pass | vs model (91.8%) |
|---|---|---|---|
| 1958 | 57 | 96.5% | +4.7 pp |
| 1959 | 100 | 92.0% | +0.2 pp |
| 1960 | 118 | 94.1% | +2.3 pp |
| 1961 | 97 | 95.9% | +4.1 pp |
| 1963 | 51 | 94.1% | +2.3 pp |
| 1964 | 62 | 95.2% | +3.4 pp |
| 1965 | 86 | 93.0% | +1.2 pp |
| 1966 | 118 | 85.6% | -6.2 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 6T years have the lowest MOT pass rate?
- 1966 registered examples pass first time less often than the Triumph 6T overall (91.8%); the 1966 cohort is lowest at 85.6% from 118 tests.
- Which 6T year has the highest MOT pass rate?
- 1958, at 96.5% of 57 first tests (2005–2025). Years more than two points above the model average: 1958, 1960, 1961, 1963, 1964.
- How much does the 6T pass rate vary by year?
- 10.9 percentage points between the highest (1958, 96.5%) and lowest (1966, 85.6%) 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 6T reliability, failures and mileage · ranked #507 of 5428 models· other Triumph models: Bonneville, Tiger, Sprint, Daytona, Speed Triple, Thunderbird