Triumph Bonneville T100
Real ownership data from 19,948 UK Bonneville T100 motorcycles — mileage, MOT pass rates and the faults that actually come up, taken from DVSA test records rather than opinion.
Most common Bonneville T100 problems
Ranked by how often each fault appears in this model's MOT history.
| Fault | Severity | Share of faults |
|---|---|---|
| Fuel system | major | 9.5% |
| Fluid leaks | dangerous | 8.4% |
| Steering and head bearings | fail | 7.3% |
| Suspension | user entered | 7% |
| Fork seals | major | 5.3% |
| Brakes | major | 3.5% |
| Lights and indicators | major | 3.1% |
| Corrosion | user entered | 2.2% |
Advisories (wear noted but not failed) are excluded above; the most common is exhaust and emissions.
Bonneville T100 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 | 160 | — | — | — |
| 2025 | 196 | — | — | — |
| 2024 | 222 | — | — | — |
| 2023 | 196 | 3,450 mi | — | 97% |
| 2022 | 175 | 4,076 mi | 775 | 93.45% |
| 2021 | 324 | 5,175 mi | 884 | 92.91% |
| 2020 | 521 | 5,896 mi | 850 | 92.63% |
| 2019 | 704 | 6,651 mi | 765 | 92.56% |
| 2018 | 1,028 | 7,740 mi | 787 | 91.56% |
| 2017 | 1,111 | 8,820 mi | 785 | 91.51% |
| 2016 | 1,665 | 8,410 mi | 665 | 90.41% |
| 2015 | 1,667 | 7,730 mi | 603 | 89.57% |
| 2014 | 1,454 | 8,404 mi | 612 | 89.8% |
| 2013 | 1,071 | 9,686 mi | 614 | 90.42% |
| 2012 | 1,146 | 9,512 mi | 570 | 90.63% |
| 2011 | 1,010 | 11,424 mi | 682 | 88.97% |
| 2010 | 1,167 | 11,177 mi | 664 | 89.94% |
| 2009 | 1,204 | 12,387 mi | 688 | 89.55% |
| 2008 | 910 | 11,197 mi | 592 | 88.41% |
| 2007 | 990 | 11,886 mi | 650 | 88.05% |
Bonneville T100 questions, answered with data
What are the most common problems with the Triumph Bonneville T100?
Across 19,948 UK examples, the most frequently recorded MOT faults are fuel system (9.5% of all recorded faults), fluid leaks (8.4% of all recorded faults), steering and head bearings (7.3% of all recorded faults).
What is average mileage for a Triumph Bonneville T100?
The median Triumph Bonneville T100 in the UK has covered 9,227 miles, and typically rides about 634 miles a year. Half of all examples fall between 4,948 and 15,924 miles.
Is the Triumph Bonneville T100 reliable?
89.75% of Triumph Bonneville T100 MOT tests are passed first time, with an average of 0 faults recorded per test. This is measured from DVSA MOT records, not owner opinion.
Based on DVSA MOT test records for 19,948 Triumph Bonneville T100 motorcycles registered in Great Britain and Northern Ireland. Contains public sector information licensed under the Open Government Licence v3.0.