Data as of: DVSA MOT results to 2025
Honda CB400N: MOT pass rate by registration year
Which CB400N years pass first time, and which fall short of the model's 77.5% average, from 5,366 DVSA tests.
Pass rate by registration year
Highest pass rate: 1977 (83.9% of 149 tests). Lowest: 1995 (72.7% of 66). Years more than two points below the model average: 1982, 1985, 1994, 1995.
| Registered | Tests | First-time pass | vs model (77.5%) |
|---|---|---|---|
| 1976 | 80 | 83.8% | +6.3 pp |
| 1977 | 149 | 83.9% | +6.4 pp |
| 1978 | 395 | 76.7% | -0.8 pp |
| 1979 | 561 | 77.7% | +0.2 pp |
| 1980 | 1,080 | 77.8% | +0.3 pp |
| 1981 | 691 | 76.3% | -1.2 pp |
| 1982 | 593 | 74.4% | -3.1 pp |
| 1983 | 619 | 80.1% | +2.6 pp |
| 1984 | 374 | 78.6% | +1.1 pp |
| 1985 | 87 | 73.6% | -3.9 pp |
| 1989 | 70 | 77.1% | -0.4 pp |
| 1992 | 64 | 78.1% | +0.6 pp |
| 1993 | 98 | 83.7% | +6.2 pp |
| 1994 | 68 | 75.0% | -2.5 pp |
| 1995 | 66 | 72.7% | -4.8 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 CB400N years have the lowest MOT pass rate?
- 1982, 1985, 1994, 1995 registered examples pass first time less often than the Honda CB400N overall (77.5%); the 1995 cohort is lowest at 72.7% from 66 tests.
- Which CB400N year has the highest MOT pass rate?
- 1977, at 83.9% of 149 first tests (2005–2025). Years more than two points above the model average: 1976, 1977, 1983, 1993.
- How much does the CB400N pass rate vary by year?
- 11.2 percentage points between the highest (1977, 83.9%) and lowest (1995, 72.7%) 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 CB400N reliability, failures and mileage · ranked #3977 of 5428 models· other Honda models: CBR600F, CBR900RR, CBR1100XX, CB500, C90, VFR800 Fi