CZ 125: MOT pass rate by registration year

Which 125 years pass first time, and which fall short of the model's 78.9% average, from 724 DVSA tests.

1987

highest-passing year · 84.3%

1989

lowest-passing year · 75.7%

8.6pp

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: 1987 (84.3% of 51 tests). Lowest: 1989 (75.7% of 74). Years more than two points below the model average: 1989.

Registered	Tests	First-time pass	vs model (78.9%)
1987	51	84.3%	+5.4 pp
1989	74	75.7%	-3.2 pp
1990	60	80.0%	+1.1 pp
1991	90	83.3%	+4.4 pp
1992	50	78.0%	-0.9 pp
1993	60	81.7%	+2.8 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

first-time pass rate by test year · 2006–2017

Questions

Which 125 years have the lowest MOT pass rate?: 1989 registered examples pass first time less often than the CZ 125 overall (78.9%); the 1989 cohort is lowest at 75.7% from 74 tests.
Which 125 year has the highest MOT pass rate?: 1987, at 84.3% of 51 first tests (2005–2025). Years more than two points above the model average: 1987, 1991, 1993.
How much does the 125 pass rate vary by year?: 8.6 percentage points between the highest (1987, 84.3%) and lowest (1989, 75.7%) 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: CZ 125 reliability, failures and mileage · ranked #3788 of 5428 models· other CZ models: 175, 250, 350