MZ RT125: MOT pass rate by registration year

Which RT125 years pass first time, and which fall short of the model's 69.8% average, from 850 DVSA tests.

2005

highest-passing year · 80.1%

2004

lowest-passing year · 57.5%

22.6pp

spread across 5 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: 2005 (80.1% of 141 tests). Lowest: 2004 (57.5% of 134). Years more than two points below the model average: 2003, 2004.

Registered	Tests	First-time pass	vs model (69.8%)
2001	135	70.4%	+0.6 pp
2002	145	74.5%	+4.7 pp
2003	204	66.2%	-3.6 pp
2004	134	57.5%	-12.3 pp
2005	141	80.1%	+10.3 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 RT125 years have the lowest MOT pass rate?: 2003, 2004 registered examples pass first time less often than the MZ RT125 overall (69.8%); the 2004 cohort is lowest at 57.5% from 134 tests.
Which RT125 year has the highest MOT pass rate?: 2005, at 80.1% of 141 first tests (2005–2025). Years more than two points above the model average: 2002, 2005.
How much does the RT125 pass rate vary by year?: 22.6 percentage points between the highest (2005, 80.1%) and lowest (2004, 57.5%) 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: MZ RT125 reliability, failures and mileage · ranked #4750 of 5428 models· other MZ models: Baghira, ETZ250, Skorpion, ETZ251, TS250, ETZ125