Data as of: DVSA MOT results to 2025
Triumph Speed Twin: MOT pass rate by registration year
Which Speed Twin years pass first time, and which fall short of the model's 91.3% average, from 2,827 DVSA tests.
Pass rate by registration year
Highest pass rate: 1954 (98.5% of 67 tests). Lowest: 1957 (85.7% of 63). Years more than two points below the model average: 1953, 1957, 1966.
| Registered | Tests | First-time pass | vs model (91.3%) |
|---|---|---|---|
| 1953 | 51 | 88.2% | -3.1 pp |
| 1954 | 67 | 98.5% | +7.2 pp |
| 1955 | 66 | 89.4% | -1.9 pp |
| 1956 | 61 | 96.7% | +5.4 pp |
| 1957 | 63 | 85.7% | -5.6 pp |
| 1958 | 99 | 93.9% | +2.6 pp |
| 1959 | 213 | 90.6% | -0.7 pp |
| 1960 | 341 | 91.5% | +0.2 pp |
| 1961 | 219 | 92.7% | +1.4 pp |
| 1962 | 91 | 92.3% | +1.0 pp |
| 1963 | 89 | 92.1% | +0.8 pp |
| 1964 | 91 | 95.6% | +4.3 pp |
| 1965 | 54 | 92.6% | +1.3 pp |
| 1966 | 82 | 87.8% | -3.5 pp |
| 1971 | 51 | 96.1% | +4.8 pp |
| 2021 | 372 | 90.9% | -0.4 pp |
| 2022 | 379 | 89.4% | -1.9 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 Speed Twin years have the lowest MOT pass rate?
- 1953, 1957, 1966 registered examples pass first time less often than the Triumph Speed Twin overall (91.3%); the 1957 cohort is lowest at 85.7% from 63 tests.
- Which Speed Twin year has the highest MOT pass rate?
- 1954, at 98.5% of 67 first tests (2005–2025). Years more than two points above the model average: 1954, 1956, 1958, 1964, 1971.
- How much does the Speed Twin pass rate vary by year?
- 12.8 percentage points between the highest (1954, 98.5%) and lowest (1957, 85.7%) 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 Speed Twin reliability, failures and mileage · ranked #619 of 5428 models· other Triumph models: Bonneville, Tiger, Sprint, Daytona, Speed Triple, Thunderbird