Yamaha YZ250: MOT pass rate by registration year

Which YZ250 years pass first time, and which fall short of the model's 81.4% average, from 721 DVSA tests.

2006

highest-passing year · 83.8%

2004

lowest-passing year · 80.0%

3.8pp

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: 2006 (83.8% of 74 tests). Lowest: 2004 (80.0% of 80).

Registered	Tests	First-time pass	vs model (81.4%)
2003	59	83.1%	+1.7 pp
2004	80	80.0%	-1.4 pp
2005	93	82.8%	+1.4 pp
2006	74	83.8%	+2.4 pp
2007	62	82.3%	+0.9 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 · 2008–2022

Questions

Which YZ250 years have the lowest MOT pass rate?: none: no registration year of the Yamaha YZ250 falls more than two points under the model's 81.4% overall pass rate.
Which YZ250 year has the highest MOT pass rate?: 2006, at 83.8% of 74 first tests (2005–2025).
How much does the YZ250 pass rate vary by year?: 3.8 percentage points between the highest (2006, 83.8%) and lowest (2004, 80.0%) 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: Yamaha YZ250 reliability, failures and mileage · ranked #3291 of 5428 models· other Yamaha models: YZF-R1, YZF-R6, FZS600, YBR 125, XJR1300, FZ6