Sinnis JS 125-6C
Real ownership data from 111 UK JS 125-6C motorcycles — mileage, MOT pass rates and the faults that actually come up, taken from DVSA test records rather than opinion.
Most common JS 125-6C problems
Ranked by how often each fault appears in this model's MOT history.
| Fault | Severity | Share of faults |
|---|---|---|
| Lights and indicators | major | 18% |
| Brakes | dangerous | 8.1% |
| Tyres | dangerous | 5.4% |
| Chain and sprockets | major | 3.6% |
| Steering and head bearings | major | 2.7% |
| Controls and cables | dangerous | 1.8% |
| Wheels | fail | 1.8% |
| Suspension | fail | 0.9% |
Advisories (wear noted but not failed) are excluded above; the most common is chain and sprockets.
JS 125-6C mileage and reliability by year
Use this to judge whether a specific bike is high or low mileage for its age.
| Year | Examples | Median mileage | Miles/year | First-time pass |
|---|---|---|---|---|
| 2016 | 24 | — | — | — |
| 2015 | 46 | 10,518 mi | 2,737 | 100% |
| 2014 | 25 | 9,794 mi | 410 | 50% |
| 2013 | 14 | 11,084 mi | 736 | 50% |
JS 125-6C questions, answered with data
What are the most common problems with the Sinnis JS 125-6C?
Across 111 UK examples, the most frequently recorded MOT faults are lights and indicators (18% of all recorded faults), brakes (8.1% of all recorded faults), tyres (5.4% of all recorded faults).
What is average mileage for a Sinnis JS 125-6C?
The median Sinnis JS 125-6C in the UK has covered 10,518 miles, and typically rides about 736 miles a year. Half of all examples fall between 2,697 and 11,743 miles.
Is the Sinnis JS 125-6C reliable?
56.14% of Sinnis JS 125-6C MOT tests are passed first time, with an average of 1.42 faults recorded per test. This is measured from DVSA MOT records, not owner opinion.
Based on DVSA MOT test records for 111 Sinnis JS 125-6C motorcycles registered in Great Britain and Northern Ireland. Contains public sector information licensed under the Open Government Licence v3.0.