Registration-year report · 2005–2025
Data as of: DVSA MOT results to 2025
Bsa C15: MOT pass rate by registration year
Which C15 years pass first time, and which fall short of the model's 89.2% average, from 5,895 DVSA tests.
1963
highest-passing year · 92.2%
1966
lowest-passing year · 87.8%
4.4pp
spread across 11 years
Pass rate by registration year
first-time pass rate · cohorts with 50 or more tests · registration year from first use date
Highest pass rate: 1963 (92.2% of 424 tests). Lowest: 1966 (87.8% of 721).
| Registered | Tests | First-time pass | vs model (89.2%) |
|---|---|---|---|
| 1958 | 61 | 90.2% | +1.0 pp |
| 1959 | 395 | 88.4% | -0.8 pp |
| 1960 | 855 | 89.0% | -0.2 pp |
| 1961 | 773 | 92.1% | +2.9 pp |
| 1962 | 617 | 89.1% | -0.1 pp |
| 1963 | 424 | 92.2% | +3.0 pp |
| 1964 | 494 | 89.3% | +0.1 pp |
| 1965 | 688 | 88.4% | -0.8 pp |
| 1966 | 721 | 87.8% | -1.4 pp |
| 1967 | 370 | 88.6% | -0.6 pp |
| 1971 | 336 | 89.6% | +0.4 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
first-time pass rate by test year · 2005–2019
Questions
- Which C15 years have the lowest MOT pass rate?
- none: no registration year of the Bsa C15 falls more than two points under the model's 89.2% overall pass rate.
- Which C15 year has the highest MOT pass rate?
- 1963, at 92.2% of 424 first tests (2005–2025). Years more than two points above the model average: 1961, 1963.
- How much does the C15 pass rate vary by year?
- 4.4 percentage points between the highest (1963, 92.2%) and lowest (1966, 87.8%) 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: Bsa C15 reliability, failures and mileage · ranked #1212 of 5428 models· other Bsa models: A10, Bantam, A65, B31, B40, A7