HONDA CB400 SUPER FOUR
Pass rate over time
The CB400 SUPER FOUR's first-time pass rate has fallen 3.8 points since 2006, 83.8% to 80.0%.
Pass rate by mileage
A low-mileage CB400 SUPER FOUR passes first time 85.7% of the time; by 50k that's 71.7%.
First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.
What fails on a CB400 SUPER FOUR
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| brakes |
|
39 | 26.7 |
| steering and suspension |
|
34 | 23.3 |
| lighting and signalling |
|
26 | 17.8 |
| tyres and wheels |
|
21 | 14.4 |
| suspension |
|
8 | 5.5 |
| driving controls |
|
5 | 3.4 |
| fuel and exhaust |
|
5 | 3.4 |
| drive system |
|
3 | 2.1 |
| tyres |
|
3 | 2.1 |
| structure and attachments |
|
2 | 1.4 |
Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.
How rivals compare
On first-time pass rate the CB400 SUPER FOUR beats 1 of its 3 closest rivals (HONDA CB500, HONDA CB400, HONDA CB400N).
Rivals share this bike's type and sit within ±30% of its engine capacity, ≥ 5,000 tests. Card colour = better/worse first-time pass rate than the CB400 SUPER FOUR.
Pass rate by registration year
Best year to buy used: 1994 (87.8% pass). Weakest: 1992 (70.4%).
First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.