Mash FIFTY
Real ownership data from 278 UK FIFTY motorcycles — mileage, MOT pass rates and the faults that actually come up, taken from DVSA test records rather than opinion.
Most common FIFTY problems
Ranked by how often each fault appears in this model's MOT history.
| Fault | Severity | Share of faults |
|---|---|---|
| Lights and indicators | dangerous | 15.9% |
| Brakes | dangerous | 6.4% |
| Chain and sprockets | dangerous | 6.4% |
| Exhaust and emissions | major | 3.8% |
| Controls and cables | dangerous | 3.8% |
| Electrical | major | 1.9% |
| Steering and head bearings | dangerous | 1.9% |
| Suspension | major | 1.3% |
Advisories (wear noted but not failed) are excluded above; the most common is steering and head bearings.
FIFTY 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 | |
|---|---|---|---|---|
| 2026 | 24 | — | — | — |
| 2025 | 6 | — | — | — |
| 2024 | 10 | — | — | — |
| 2023 | 20 | 3,548 mi | — | 42.86% |
| 2022 | 30 | 3,788 mi | 822 | 74.07% |
| 2021 | 42 | 3,752 mi | 1,196 | 64.81% |
| 2018 | 58 | 5,472 mi | 1,266 | 64.1% |
| 2017 | 81 | 3,564 mi | 723 | 73.23% |
FIFTY questions, answered with data
What are the most common problems with the Mash FIFTY?
Across 278 UK examples, the most frequently recorded MOT faults are lights and indicators (15.9% of all recorded faults), brakes (6.4% of all recorded faults), chain and sprockets (6.4% of all recorded faults).
What is average mileage for a Mash FIFTY?
The median Mash FIFTY in the UK has covered 4,436 miles, and typically rides about 975 miles a year. Half of all examples fall between 1,962 and 7,525 miles.
Is the Mash FIFTY reliable?
69.5% of Mash FIFTY MOT tests are passed first time, with an average of 0.29 faults recorded per test. This is measured from DVSA MOT records, not owner opinion.
Based on DVSA MOT test records for 278 Mash FIFTY motorcycles registered in Great Britain and Northern Ireland. Contains public sector information licensed under the Open Government Licence v3.0.