Yamaha YS125
Real ownership data from 2,634 UK YS125 motorcycles — mileage, MOT pass rates and the faults that actually come up, taken from DVSA test records rather than opinion.
Most common YS125 problems
Ranked by how often each fault appears in this model's MOT history.
| Fault | Severity | Share of faults |
|---|---|---|
| Tyres | major | 15.4% |
| Exhaust and emissions | dangerous | 11.2% |
| Frame and structure | dangerous | 9.1% |
| Brakes | dangerous | 8% |
| Lights and indicators | major | 3.2% |
| Chain and sprockets | dangerous | 3.2% |
| Other | dangerous | 1.6% |
| Suspension | major | 1.6% |
Advisories (wear noted but not failed) are excluded above; the most common is fluid leaks.
YS125 mileage and reliability by year
Use this to judge whether a specific bike is high or low mileage for its age.
| YearYear | MedianMedian mileage | Mi/yrMiles/year | MOT passFirst-time pass | |
|---|---|---|---|---|
| 2021 | 84 | 8,380 mi | 1,857 | 75.15% |
| 2020 | 412 | 8,750 mi | 1,558 | 74.16% |
| 2019 | 692 | 10,347 mi | 1,784 | 74.95% |
| 2018 | 834 | 10,007 mi | 1,597 | 75.33% |
| 2017 | 604 | 11,465 mi | 1,639 | 76.04% |
YS125 questions, answered with data
What are the most common problems with the Yamaha YS125?
Across 2,634 UK examples, the most frequently recorded MOT faults are tyres (15.4% of all recorded faults), exhaust and emissions (11.2% of all recorded faults), frame and structure (9.1% of all recorded faults).
What is average mileage for a Yamaha YS125?
The median Yamaha YS125 in the UK has covered 10,084 miles, and typically rides about 1,648 miles a year. Half of all examples fall between 5,444 and 16,771 miles.
Is the Yamaha YS125 reliable?
75.31% of Yamaha YS125 MOT tests are passed first time, with an average of 0.02 faults recorded per test. This is measured from DVSA MOT records, not owner opinion.
Based on DVSA MOT test records for 2,634 Yamaha YS125 motorcycles registered in Great Britain and Northern Ireland. Contains public sector information licensed under the Open Government Licence v3.0.