Yamaha BWS 125: MOT pass rate by registration year

Which BWS 125 years pass first time, and which fall short of the model's 76.7% average, from 2,975 DVSA tests.

2013

highest-passing year · 80.6%

2011

lowest-passing year · 75.7%

4.9pp

spread across 4 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: 2013 (80.6% of 372 tests). Lowest: 2011 (75.7% of 883).

Registered	Tests	First-time pass	vs model (76.7%)
2010	944	76.0%	-0.7 pp
2011	883	75.7%	-1.0 pp
2012	763	77.5%	+0.8 pp
2013	372	80.6%	+3.9 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 · 2013–2025

Questions

Which BWS 125 years have the lowest MOT pass rate?: none: no registration year of the Yamaha BWS 125 falls more than two points under the model's 76.7% overall pass rate.
Which BWS 125 year has the highest MOT pass rate?: 2013, at 80.6% of 372 first tests (2005–2025).
How much does the BWS 125 pass rate vary by year?: 4.9 percentage points between the highest (2013, 80.6%) and lowest (2011, 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: Yamaha BWS 125 reliability, failures and mileage · ranked #4096 of 5428 models· other Yamaha models: YZF-R1, YZF-R6, FZS600, YBR 125, XJR1300, FZ6