Honda CB400F2: MOT pass rate by registration year

Which CB400F2 years pass first time, and which fall short of the model's 84.7% average, from 685 DVSA tests.

1978

highest-passing year · 86.4%

1992

lowest-passing year · 80.4%

6.0pp

spread across 3 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: 1978 (86.4% of 228 tests). Lowest: 1992 (80.4% of 51). Years more than two points below the model average: 1992.

Registered	Tests	First-time pass	vs model (84.7%)
1977	219	84.5%	-0.2 pp
1978	228	86.4%	+1.7 pp
1992	51	80.4%	-4.3 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 · 2006–2017

Questions

Which CB400F2 years have the lowest MOT pass rate?: 1992 registered examples pass first time less often than the Honda CB400F2 overall (84.7%); the 1992 cohort is lowest at 80.4% from 51 tests.
Which CB400F2 year has the highest MOT pass rate?: 1978, at 86.4% of 228 first tests (2005–2025).
How much does the CB400F2 pass rate vary by year?: 6.0 percentage points between the highest (1978, 86.4%) and lowest (1992, 80.4%) 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 CB400F2 reliability, failures and mileage · ranked #2572 of 5428 models· other Honda models: CBR600F, CBR900RR, CBR1100XX, CB500, C90, VFR800 Fi