Triumph Bonneville T100
Real ownership data from 20,003 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 |
|---|---|---|
| Suspension | user entered | 9.4% |
| Steering and head bearings | dangerous | 9.1% |
| Fuel system | major | 7.7% |
| Lights and indicators | major | 6.5% |
| Fluid leaks | dangerous | 5.6% |
| Corrosion | user entered | 3% |
| Frame and structure | user entered | 3% |
| Brakes | dangerous | 2.1% |
Advisories (wear noted but not failed) are excluded above; the most common is brake discs and pads.
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 | 188 | — | — | — |
| 2025 | 198 | — | — | — |
| 2024 | 222 | — | — | — |
| 2023 | 197 | 3,512 mi | 2,144 | 97.3% |
| 2022 | 175 | 4,206 mi | 776 | 93.07% |
| 2021 | 324 | 5,244 mi | 911 | 92.88% |
| 2020 | 522 | 5,940 mi | 839 | 92.58% |
| 2019 | 704 | 6,812 mi | 765 | 92.51% |
| 2018 | 1,028 | 7,822 mi | 797 | 91.59% |
| 2017 | 1,110 | 8,863 mi | 779 | 91.58% |
| 2016 | 1,676 | 8,405 mi | 665 | 90.36% |
| 2015 | 1,667 | 7,784 mi | 601 | 89.59% |
| 2014 | 1,456 | 8,456 mi | 612 | 89.83% |
| 2013 | 1,072 | 9,761 mi | 614 | 90.43% |
| 2012 | 1,149 | 9,576 mi | 566 | 90.65% |
| 2011 | 1,011 | 11,424 mi | 673 | 88.96% |
| 2010 | 1,166 | 11,242 mi | 664 | 89.99% |
| 2009 | 1,206 | 12,566 mi | 687 | 89.53% |
| 2008 | 911 | 11,204 mi | 592 | 88.41% |
| 2007 | 991 | 11,957 mi | 653 | 88.07% |
Bonneville T100 questions, answered with data
What are the most common problems with the Triumph Bonneville T100?
Across 20,003 UK examples, the most frequently recorded MOT faults are suspension (9.4% of all recorded faults), steering and head bearings (9.1% of all recorded faults), fuel system (7.7% of all recorded faults).
What is average mileage for a Triumph Bonneville T100?
The median Triumph Bonneville T100 in the UK has covered 9,281 miles, and typically rides about 634 miles a year. Half of all examples fall between 4,966 and 15,998 miles.
Is the Triumph Bonneville T100 reliable?
89.76% 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 20,003 Triumph Bonneville T100 motorcycles registered in Great Britain and Northern Ireland. Contains public sector information licensed under the Open Government Licence v3.0.