Data as of: DVSA MOT results to 2025
Honda CB400F: MOT pass rate by registration year
Which CB400F years pass first time, and which fall short of the model's 83.2% average, from 4,640 DVSA tests.
Pass rate by registration year
Highest pass rate: 1978 (85.5% of 635 tests). Lowest: 1993 (78.7% of 61). Years more than two points below the model average: 1993.
| Registered | Tests | First-time pass | vs model (83.2%) |
|---|---|---|---|
| 1975 | 603 | 83.4% | +0.2 pp |
| 1976 | 1,545 | 83.8% | +0.6 pp |
| 1977 | 1,312 | 81.8% | -1.4 pp |
| 1978 | 635 | 85.5% | +2.3 pp |
| 1979 | 190 | 84.2% | +1.0 pp |
| 1993 | 61 | 78.7% | -4.5 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 CB400F years have the lowest MOT pass rate?
- 1993 registered examples pass first time less often than the Honda CB400F overall (83.2%); the 1993 cohort is lowest at 78.7% from 61 tests.
- Which CB400F year has the highest MOT pass rate?
- 1978, at 85.5% of 635 first tests (2005–2025).
- How much does the CB400F pass rate vary by year?
- 6.8 percentage points between the highest (1978, 85.5%) and lowest (1993, 78.7%) 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: Honda CB400F reliability, failures and mileage · ranked #2911 of 5428 models· other Honda models: CBR600F, CBR900RR, CBR1100XX, CB500, C90, VFR800 Fi