Sinnis JET II
Real ownership data from 119 UK JET II motorcycles — mileage, MOT pass rates and the faults that actually come up, taken from DVSA test records rather than opinion.
Most common JET II problems
Ranked by how often each fault appears in this model's MOT history.
| Fault | Severity | Share of faults |
|---|---|---|
| Lights and indicators | major | 26% |
| Brakes | dangerous | 7.2% |
| Steering and head bearings | dangerous | 6.3% |
| Suspension | major | 4.9% |
| Electrical | major | 3.6% |
| Other | dangerous | 2.7% |
| Controls and cables | major | 0.5% |
| Frame and structure | dangerous | 0.5% |
Advisories (wear noted but not failed) are excluded above; the most common is brakes.
JET II 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 |
|---|---|---|---|---|
| 2021 | 37 | 3,694 mi | 678 | 64.1% |
| 2020 | 47 | 3,138 mi | 654 | 59.18% |
| 2019 | 31 | 4,429 mi | 578 | 74.19% |
JET II questions, answered with data
What are the most common problems with the Sinnis JET II?
Across 119 UK examples, the most frequently recorded MOT faults are lights and indicators (26% of all recorded faults), brakes (7.2% of all recorded faults), steering and head bearings (6.3% of all recorded faults).
What is average mileage for a Sinnis JET II?
The median Sinnis JET II in the UK has covered 3,737 miles, and typically rides about 654 miles a year. Half of all examples fall between 1,855 and 5,072 miles.
Is the Sinnis JET II reliable?
64.17% of Sinnis JET II 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 119 Sinnis JET II motorcycles registered in Great Britain and Northern Ireland. Contains public sector information licensed under the Open Government Licence v3.0.