BIKERELIABILITY Reg check
Registration-year report · 2005–2025

Data as of: DVSA MOT results to 2025

Yamaha YS 125: MOT pass rate by registration year

Which YS 125 years pass first time, and which fall short of the model's 76.2% average, from 7,059 DVSA tests.

2018
highest-passing year · 76.6%
2021
lowest-passing year · 75.0%
1.6pp
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: 2018 (76.6% of 2,466 tests). Lowest: 2021 (75.0% of 108).

74%76%77%2017: 76.6% pass (1,987 tests)2018: 76.6% pass (2,466 tests)2019: 75.5% pass (1,726 tests)2020: 75.8% pass (764 tests)2021: 75.0% pass (108 tests)201720192021
RegisteredTestsFirst-time passvs model (76.2%)
2017 1,987 76.6% +0.4 pp
2018 2,466 76.6% +0.4 pp
2019 1,726 75.5% -0.7 pp
2020 764 75.8% -0.4 pp
2021 108 75.0% -1.2 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 · 2020–2025
72%79%87%2020: 84.5% pass (433 tests)2021: 78.3% pass (992 tests)2022: 76.0% pass (1,464 tests)2023: 74.9% pass (1,612 tests)2024: 74.4% pass (1,299 tests)2025: 75.2% pass (1,232 tests)20202025

Questions

Which YS 125 years have the lowest MOT pass rate?
none: no registration year of the Yamaha YS 125 falls more than two points under the model's 76.2% overall pass rate.
Which YS 125 year has the highest MOT pass rate?
2018, at 76.6% of 2,466 first tests (2005–2025).
How much does the YS 125 pass rate vary by year?
1.6 percentage points between the highest (2018, 76.6%) and lowest (2021, 75.0%) 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 YS 125 reliability, failures and mileage · ranked #4162 of 5428 models· other Yamaha models: YZF-R1, YZF-R6, FZS600, YBR 125, XJR1300, FZ6