Honda Dax: MOT pass rate by registration year

Which Dax years pass first time, and which fall short of the model's 86.4% average, from 1,548 DVSA tests.

1990

highest-passing year · 91.5%

1971

lowest-passing year · 79.8%

11.7pp

spread across 6 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: 1990 (91.5% of 259 tests). Lowest: 1971 (79.8% of 84). Years more than two points below the model average: 1971, 1988.

Registered	Tests	First-time pass	vs model (86.4%)
1971	84	79.8%	-6.6 pp
1988	139	80.6%	-5.8 pp
1989	321	87.2%	+0.8 pp
1990	259	91.5%	+5.1 pp
1991	192	86.5%	+0.1 pp
1992	132	87.1%	+0.7 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 · 2006–2025

Questions

Which Dax years have the lowest MOT pass rate?: 1971, 1988 registered examples pass first time less often than the Honda Dax overall (86.4%); the 1971 cohort is lowest at 79.8% from 84 tests.
Which Dax year has the highest MOT pass rate?: 1990, at 91.5% of 259 first tests (2005–2025).
How much does the Dax pass rate vary by year?: 11.7 percentage points between the highest (1990, 91.5%) and lowest (1971, 79.8%) 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: Honda Dax reliability, failures and mileage · ranked #2091 of 5428 models· other Honda models: CBR600F, CBR900RR, CBR1100XX, CB500, C90, VFR800 Fi