Honda CB400 4
Real ownership data from 215 UK CB400 4 motorcycles — mileage, MOT pass rates and the faults that actually come up, taken from DVSA test records rather than opinion.
Most common CB400 4 problems
Ranked by how often each fault appears in this model's MOT history.
| Fault | Severity | Share of faults |
|---|---|---|
| Lights and indicators | major | 11.6% |
| Brakes | fail | 6.4% |
| Tyres | fail | 4.7% |
| Suspension | fail | 3.6% |
| Other | fail | 3.4% |
| Steering and head bearings | fail | 2.8% |
| Chain and sprockets | fail | 2.4% |
| Electrical | fail | 1.7% |
Advisories (wear noted but not failed) are excluded above; the most common is suspension.
CB400 4 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 |
|---|---|---|---|---|
| 1979 | 12 | 23,917 mi | 327 | 90.48% |
| 1978 | 43 | 33,705 mi | 154 | 84.55% |
| 1977 | 63 | 30,057 mi | 260 | 86.72% |
| 1976 | 53 | 27,099 mi | 224 | 87.25% |
| 1975 | 27 | 30,600 mi | 138 | 85.61% |
CB400 4 questions, answered with data
What are the most common problems with the Honda CB400 4?
Across 215 UK examples, the most frequently recorded MOT faults are lights and indicators (11.6% of all recorded faults), brakes (6.4% of all recorded faults), tyres (4.7% of all recorded faults).
What is average mileage for a Honda CB400 4?
The median Honda CB400 4 in the UK has covered 30,130 miles, and typically rides about 219 miles a year. Half of all examples fall between 18,297 and 44,215 miles.
Is the Honda CB400 4 reliable?
85.94% of Honda CB400 4 MOT tests are passed first time, with an average of 0.61 faults recorded per test. This is measured from DVSA MOT records, not owner opinion.
Based on DVSA MOT test records for 215 Honda CB400 4 motorcycles registered in Great Britain and Northern Ireland. Contains public sector information licensed under the Open Government Licence v3.0.