Honda CB400N
Real ownership data from 1,119 UK CB400N motorcycles — mileage, MOT pass rates and the faults that actually come up, taken from DVSA test records rather than opinion.
Most common CB400N problems
Ranked by how often each fault appears in this model's MOT history.
| Fault | Severity | Share of faults |
|---|---|---|
| Lights and indicators | major | 12.2% |
| Brakes | major | 9.2% |
| Suspension | major | 4.4% |
| Other | fail | 3.5% |
| Tyres | fail | 3.5% |
| Steering and head bearings | fail | 3.4% |
| Chain and sprockets | fail | 3% |
| Controls and cables | fail | 1.4% |
Advisories (wear noted but not failed) are excluded above; the most common is suspension.
CB400N 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 |
|---|---|---|---|---|
| 2018 | 6 | 14,674 mi | 534 | 100% |
| 2004 | 6 | 24,787 mi | 1,134 | 87.1% |
| 2002 | 11 | 19,986 mi | 120 | 81.93% |
| 2001 | 5 | 34,216 mi | — | 64.29% |
| 2000 | 7 | 17,148 mi | 1,057 | 76% |
| 1999 | 14 | 32,963 mi | 1,550 | 62.22% |
| 1998 | 11 | 17,577 mi | 427 | 86.15% |
| 1997 | 21 | 35,790 mi | 1,124 | 77.4% |
| 1996 | 6 | 40,168 mi | 980 | 67.74% |
| 1994 | 9 | 38,233 mi | 55 | 81.08% |
| 1993 | 9 | 36,772 mi | 4,374 | 81.13% |
| 1992 | 5 | 35,854 mi | 673 | 90% |
| 1990 | 9 | 28,276 mi | 1,594 | 79.59% |
| 1986 | 5 | 28,558 mi | 1,266 | 80% |
| 1985 | 18 | 30,804 mi | 733 | 74.49% |
| 1984 | 66 | 30,245 mi | 250 | 80.94% |
| 1983 | 115 | 34,541 mi | 295 | 81.27% |
| 1982 | 124 | 36,508 mi | 322 | 75% |
| 1981 | 145 | 31,876 mi | 274 | 75.57% |
| 1980 | 203 | 26,151 mi | 297 | 79.32% |
CB400N questions, answered with data
What are the most common problems with the Honda CB400N?
Across 1,119 UK examples, the most frequently recorded MOT faults are lights and indicators (12.2% of all recorded faults), brakes (9.2% of all recorded faults), suspension (4.4% of all recorded faults).
What is average mileage for a Honda CB400N?
The median Honda CB400N in the UK has covered 29,889 miles, and typically rides about 325 miles a year. Half of all examples fall between 18,891 and 40,967 miles.
Is the Honda CB400N reliable?
78.6% of Honda CB400N MOT tests are passed first time, with an average of 0.93 faults recorded per test. This is measured from DVSA MOT records, not owner opinion.
Based on DVSA MOT test records for 1,119 Honda CB400N motorcycles registered in Great Britain and Northern Ireland. Contains public sector information licensed under the Open Government Licence v3.0.