Harley-Davidson Dyna
Real ownership data from 5,355 UK Dyna motorcycles — mileage, MOT pass rates and the faults that actually come up, taken from DVSA test records rather than opinion.
Most common Dyna problems
Ranked by how often each fault appears in this model's MOT history.
| Fault | Severity | Share of faults |
|---|---|---|
| Exhaust and emissions | user entered | 22.3% |
| Controls and cables | fail | 11.9% |
| Steering and head bearings | dangerous | 8.5% |
| Electrical | major | 7.2% |
| Suspension | dangerous | 5.4% |
| Chain and sprockets | fail | 4% |
| Brake discs and pads | dangerous | 3.6% |
| Frame and structure | fail | 2.9% |
Advisories (wear noted but not failed) are excluded above; the most common is exhaust and emissions.
Dyna 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 |
|---|---|---|---|---|
| 2021 | 11 | 4,272 mi | 545 | 90% |
| 2020 | 47 | 3,648 mi | 409 | 89.89% |
| 2019 | 84 | 4,916 mi | 598 | 91.37% |
| 2018 | 69 | 6,188 mi | 729 | 83.24% |
| 2016 | 161 | 10,781 mi | 917 | 85.63% |
| 2015 | 147 | 11,913 mi | 930 | 87.48% |
| 2014 | 146 | 12,937 mi | 1,094 | 90.1% |
| 2013 | 7 | 6,327 mi | 552 | 81.82% |
| 2011 | 18 | 12,680 mi | 1,196 | 86.67% |
| 2010 | 61 | 12,091 mi | 676 | 89% |
| 2009 | 129 | 15,066 mi | 997 | 88.61% |
| 2008 | 119 | 14,655 mi | 837 | 91.17% |
| 2007 | 117 | 13,857 mi | 619 | 91.03% |
| 2006 | 549 | 14,780 mi | 785 | 88.59% |
| 2005 | 458 | 17,489 mi | 882 | 88.62% |
| 2004 | 445 | 17,532 mi | 870 | 89.92% |
| 2003 | 380 | 18,058 mi | 834 | 89.2% |
| 2002 | 395 | 17,870 mi | 925 | 90.5% |
| 2001 | 411 | 19,617 mi | 752 | 90.04% |
| 2000 | 376 | 21,126 mi | 762 | 89.35% |
Dyna questions, answered with data
What are the most common problems with the Harley-Davidson Dyna?
Across 5,355 UK examples, the most frequently recorded MOT faults are exhaust and emissions (22.3% of all recorded faults), controls and cables (11.9% of all recorded faults), steering and head bearings (8.5% of all recorded faults).
What is average mileage for a Harley-Davidson Dyna?
The median Harley-Davidson Dyna in the UK has covered 16,917 miles, and typically rides about 801 miles a year. Half of all examples fall between 8,779 and 27,955 miles.
Is the Harley-Davidson Dyna reliable?
89.28% of Harley-Davidson Dyna MOT tests are passed first time, with an average of 0.01 faults recorded per test. This is measured from DVSA MOT records, not owner opinion.
Based on DVSA MOT test records for 5,355 Harley-Davidson Dyna motorcycles registered in Great Britain and Northern Ireland. Contains public sector information licensed under the Open Government Licence v3.0.