Royal Alloy GP 125
Real ownership data from 1,547 UK GP 125 motorcycles — mileage, MOT pass rates and the faults that actually come up, taken from DVSA test records rather than opinion.
Most common GP 125 problems
Ranked by how often each fault appears in this model's MOT history.
| Fault | Severity | Share of faults |
|---|---|---|
| Steering and head bearings | dangerous | 5.7% |
| Brakes | major | 5.7% |
| Lights and indicators | dangerous | 10.7% |
| Suspension | dangerous | 2.9% |
| Tyres | dangerous | 2.7% |
| Exhaust and emissions | major | 1.2% |
| Other | dangerous | 1.1% |
| Electrical | prs | 0.3% |
Advisories (wear noted but not failed) are excluded above; the most common is brakes.
GP 125 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 |
|---|---|---|---|---|
| 2026 | 97 | — | — | — |
| 2025 | 137 | — | — | — |
| 2024 | 196 | — | — | — |
| 2023 | 186 | 2,108 mi | — | 91.94% |
| 2022 | 216 | 2,579 mi | 400 | 91.38% |
| 2021 | 231 | 3,013 mi | 510 | 88.84% |
| 2020 | 190 | 2,790 mi | 370 | 87.94% |
| 2019 | 201 | 3,316 mi | 469 | 85.61% |
| 2018 | 93 | 3,807 mi | 398 | 89.46% |
GP 125 questions, answered with data
What are the most common problems with the Royal Alloy GP 125?
Across 1,547 UK examples, the most frequently recorded MOT faults are steering and head bearings (5.7% of all recorded faults), brakes (5.7% of all recorded faults), lights and indicators (10.7% of all recorded faults).
What is average mileage for a Royal Alloy GP 125?
The median Royal Alloy GP 125 in the UK has covered 2,968 miles, and typically rides about 422 miles a year. Half of all examples fall between 1,546 and 5,042 miles.
Is the Royal Alloy GP 125 reliable?
88.23% of Royal Alloy GP 125 MOT tests are passed first time, with an average of 0.55 faults recorded per test. This is measured from DVSA MOT records, not owner opinion.
Based on DVSA MOT test records for 1,547 Royal Alloy GP 125 motorcycles registered in Great Britain and Northern Ireland. Contains public sector information licensed under the Open Government Licence v3.0.