Triumph Trident 660
Real ownership data from 8,732 UK Trident 660 motorcycles — mileage, MOT pass rates and the faults that actually come up, taken from DVSA test records rather than opinion.
Most common Trident 660 problems
Ranked by how often each fault appears in this model's MOT history.
| Fault | Severity | Share of faults |
|---|---|---|
| Brake discs and pads | dangerous | 3.8% |
| Other | major | 2.6% |
| Tyres | dangerous | 2.5% |
| Controls and cables | major | 1.6% |
| Steering and head bearings | major | 1.3% |
| Brakes | dangerous | 1.2% |
| Chain and sprockets | major | 1.1% |
| Lights and indicators | user entered | 0.8% |
Advisories (wear noted but not failed) are excluded above; the most common is steering and head bearings.
Trident 660 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 | 853 | — | — | — |
| 2025 | 764 | — | — | — |
| 2024 | 610 | 5,406 mi | — | 100% |
| 2023 | 714 | 4,187 mi | 2,402 | 90.78% |
| 2022 | 908 | 5,062 mi | 1,115 | 89.99% |
| 2021 | 1,307 | 6,026 mi | 1,010 | 92.1% |
| 2020 | 15 | 5,756 mi | 805 | 95.56% |
| 2019 | 15 | 16,086 mi | 21 | 96.15% |
| 2018 | 17 | 9,470 mi | 157 | 89.47% |
| 2017 | 35 | 10,064 mi | 308 | 95.56% |
| 2016 | 30 | 9,168 mi | 296 | 87.04% |
| 2015 | 30 | 12,416 mi | 344 | 90.54% |
| 2014 | 14 | 10,234 mi | 226 | 95.65% |
| 2013 | 14 | 13,086 mi | 49 | 92.11% |
| 2012 | 12 | 11,186 mi | 28 | 75% |
| 2011 | 5 | 18,088 mi | 294 | 94.12% |
| 2010 | 6 | 14,386 mi | 25 | 68.42% |
| 2009 | 12 | 10,674 mi | 184 | 92.86% |
| 2008 | 9 | 12,994 mi | 197 | 85% |
| 2007 | 6 | 6,514 mi | 341 | 81.82% |
Trident 660 questions, answered with data
What are the most common problems with the Triumph Trident 660?
Across 8,732 UK examples, the most frequently recorded MOT faults are brake discs and pads (3.8% of all recorded faults), other (2.6% of all recorded faults), tyres (2.5% of all recorded faults).
What is average mileage for a Triumph Trident 660?
The median Triumph Trident 660 in the UK has covered 11,978 miles, and typically rides about 644 miles a year. Half of all examples fall between 5,156 and 28,606 miles.
Is the Triumph Trident 660 reliable?
85.9% of Triumph Trident 660 MOT tests are passed first time, with an average of 0.7 faults recorded per test. This is measured from DVSA MOT records, not owner opinion.
Based on DVSA MOT test records for 8,732 Triumph Trident 660 motorcycles registered in Great Britain and Northern Ireland. Contains public sector information licensed under the Open Government Licence v3.0.