BSA D14
Real ownership data from 118 UK D14 motorcycles — mileage, MOT pass rates and the faults that actually come up, taken from DVSA test records rather than opinion.
Most common D14 problems
Ranked by how often each fault appears in this model's MOT history.
| Fault | Severity | Share of faults |
|---|---|---|
| Lights and indicators | major | 7.8% |
| Other | user entered | 6.6% |
| Brakes | fail | 6.6% |
| Tyres | fail | 4.9% |
| Suspension | fail | 3.7% |
| Wheels | fail | 2.5% |
| Steering and head bearings | fail | 2.5% |
| Chain and sprockets | fail | 2.1% |
Advisories (wear noted but not failed) are excluded above; the most common is suspension.
D14 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 |
|---|---|---|---|---|
| 1970 | 9 | 13,428 mi | 25 | 95.24% |
| 1969 | 19 | 16,859 mi | 60 | 84.71% |
| 1968 | 56 | 13,296 mi | 48 | 88.83% |
D14 questions, answered with data
What are the most common problems with the BSA D14?
Across 118 UK examples, the most frequently recorded MOT faults are lights and indicators (7.8% of all recorded faults), other (6.6% of all recorded faults), brakes (6.6% of all recorded faults).
What is average mileage for a BSA D14?
The median BSA D14 in the UK has covered 13,883 miles, and typically rides about 47 miles a year. Half of all examples fall between 8,150 and 21,181 miles.
Is the BSA D14 reliable?
89.76% of BSA D14 MOT tests are passed first time, with an average of 0.51 faults recorded per test. This is measured from DVSA MOT records, not owner opinion.
Based on DVSA MOT test records for 118 BSA D14 motorcycles registered in Great Britain and Northern Ireland. Contains public sector information licensed under the Open Government Licence v3.0.