Yamaha XT225 Serow: MOT pass rate by registration year

Which XT225 Serow years pass first time, and which fall short of the model's 87.3% average, from 707 DVSA tests.

2003

highest-passing year · 93.9%

1993

lowest-passing year · 71.2%

22.7pp

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: 2003 (93.9% of 82 tests). Lowest: 1993 (71.2% of 59). Years more than two points below the model average: 1989, 1993.

Registered	Tests	First-time pass	vs model (87.3%)
1989	71	81.7%	-5.6 pp
1993	59	71.2%	-16.1 pp
1996	76	88.2%	+0.9 pp
2003	82	93.9%	+6.6 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 XT225 Serow years have the lowest MOT pass rate?: 1989, 1993 registered examples pass first time less often than the Yamaha XT225 Serow overall (87.3%); the 1993 cohort is lowest at 71.2% from 59 tests.
Which XT225 Serow year has the highest MOT pass rate?: 2003, at 93.9% of 82 first tests (2005–2025).
How much does the XT225 Serow pass rate vary by year?: 22.7 percentage points between the highest (2003, 93.9%) and lowest (1993, 71.2%) 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 XT225 Serow reliability, failures and mileage · ranked #1818 of 5428 models· other Yamaha models: YZF-R1, YZF-R6, FZS600, YBR 125, XJR1300, FZ6