Triumph T20
Real ownership data from 249 UK T20 motorcycles — mileage, MOT pass rates and the faults that actually come up, taken from DVSA test records rather than opinion.
Most common T20 problems
Ranked by how often each fault appears in this model's MOT history.
| Fault | Severity | Share of faults |
|---|---|---|
| Other | fail | 17.8% |
| Lights and indicators | fail | 9% |
| Brakes | fail | 7.6% |
| Tyres | fail | 5% |
| Suspension | fail | 3.5% |
| Steering and head bearings | fail | 3.5% |
| Wheels | fail | 1.9% |
| Electrical | fail | 1.8% |
Advisories (wear noted but not failed) are excluded above; the most common is suspension.
T20 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 |
|---|---|---|---|---|
| 2003 | 6 | 6,751 mi | 90 | 96.15% |
| 1983 | 5 | 6,756 mi | 19 | 69.23% |
| 1968 | 5 | 3,259 mi | 54 | 44.44% |
| 1967 | 12 | 14,921 mi | 18 | 85.06% |
| 1966 | 10 | 11,561 mi | 120 | 92.86% |
| 1965 | 11 | 547 mi | 38 | 85.71% |
| 1964 | 16 | 12,128 mi | 45 | 88.24% |
| 1963 | 18 | 13,586 mi | 67 | 91.25% |
| 1962 | 10 | 4,416 mi | 10 | 88.57% |
| 1961 | 29 | 9,418 mi | 41 | 87.74% |
| 1960 | 16 | 2,584 mi | 183 | 93.55% |
| 1959 | 18 | 6,860 mi | 170 | 85.42% |
| 1958 | 15 | 12,398 mi | 22 | 87.18% |
| 1955 | 5 | 7,877 mi | 6 | 90.91% |
T20 questions, answered with data
What are the most common problems with the Triumph T20?
Across 249 UK examples, the most frequently recorded MOT faults are other (17.8% of all recorded faults), lights and indicators (9% of all recorded faults), brakes (7.6% of all recorded faults).
What is average mileage for a Triumph T20?
The median Triumph T20 in the UK has covered 7,231 miles, and typically rides about 50 miles a year. Half of all examples fall between 900 and 19,656 miles.
Is the Triumph T20 reliable?
88.89% of Triumph T20 MOT tests are passed first time, with an average of 0.58 faults recorded per test. This is measured from DVSA MOT records, not owner opinion.
Based on DVSA MOT test records for 249 Triumph T20 motorcycles registered in Great Britain and Northern Ireland. Contains public sector information licensed under the Open Government Licence v3.0.