Mutt Mastiff
Real ownership data from 392 UK Mastiff motorcycles — mileage, MOT pass rates and the faults that actually come up, taken from DVSA test records rather than opinion.
Most common Mastiff problems
Ranked by how often each fault appears in this model's MOT history.
| Fault | Severity | Share of faults |
|---|---|---|
| Brakes | dangerous | 18.3% |
| Chain and sprockets | dangerous | 9.7% |
| Lights and indicators | dangerous | 6.3% |
| Brake discs and pads | dangerous | 5.7% |
| Controls and cables | dangerous | 5.7% |
| Electrical | major | 5.1% |
| Exhaust and emissions | major | 3.4% |
| Other | major | 1.7% |
Advisories (wear noted but not failed) are excluded above; the most common is brake discs and pads.
Mastiff 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 | 12 | — | — | — |
| 2025 | 25 | — | — | — |
| 2024 | 26 | — | — | — |
| 2023 | 48 | 2,964 mi | — | 75% |
| 2022 | 95 | 2,206 mi | 692 | 73.97% |
| 2021 | 109 | 3,076 mi | 800 | 67.08% |
| 2020 | 77 | 3,956 mi | 981 | 75.45% |
Mastiff questions, answered with data
What are the most common problems with the Mutt Mastiff?
Across 392 UK examples, the most frequently recorded MOT faults are brakes (18.3% of all recorded faults), chain and sprockets (9.7% of all recorded faults), lights and indicators (6.3% of all recorded faults).
What is average mileage for a Mutt Mastiff?
The median Mutt Mastiff in the UK has covered 2,900 miles, and typically rides about 917 miles a year. Half of all examples fall between 1,478 and 5,523 miles.
Is the Mutt Mastiff reliable?
71.91% of Mutt Mastiff MOT tests are passed first time, with an average of 0.34 faults recorded per test. This is measured from DVSA MOT records, not owner opinion.
Based on DVSA MOT test records for 392 Mutt Mastiff motorcycles registered in Great Britain and Northern Ireland. Contains public sector information licensed under the Open Government Licence v3.0.