Data as of: DVSA MOT results to 2025
Norton 650SS: MOT pass rate by registration year
Which 650SS years pass first time, and which fall short of the model's 93.8% average, from 1,084 DVSA tests.
Pass rate by registration year
Highest pass rate: 1969 (100.0% of 50 tests). Lowest: 1967 (83.6% of 61). Years more than two points below the model average: 1967.
| Registered | Tests | First-time pass | vs model (93.8%) |
|---|---|---|---|
| 1961 | 68 | 94.1% | +0.3 pp |
| 1962 | 256 | 92.6% | -1.2 pp |
| 1963 | 168 | 95.8% | +2.0 pp |
| 1964 | 124 | 94.4% | +0.6 pp |
| 1965 | 99 | 96.0% | +2.2 pp |
| 1966 | 78 | 92.3% | -1.5 pp |
| 1967 | 61 | 83.6% | -10.2 pp |
| 1968 | 115 | 92.2% | -1.6 pp |
| 1969 | 50 | 100.0% | +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 650SS years have the lowest MOT pass rate?
- 1967 registered examples pass first time less often than the Norton 650SS overall (93.8%); the 1967 cohort is lowest at 83.6% from 61 tests.
- Which 650SS year has the highest MOT pass rate?
- 1969, at 100.0% of 50 first tests (2005–2025). Years more than two points above the model average: 1965, 1969.
- How much does the 650SS pass rate vary by year?
- 16.4 percentage points between the highest (1969, 100.0%) and lowest (1967, 83.6%) 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: Norton 650SS reliability, failures and mileage · ranked #198 of 5428 models· other Norton models: Commando, Dominator, ES2, Commander, Triton, Atlas