KAWASAKI GPZ400
Pass rate over time
The GPZ400's first-time pass rate has fallen 1.5 points since 2006, 66.0% to 64.5%.
Pass rate by mileage
A low-mileage GPZ400 passes first time 78.6% of the time; by 50k that's 76.5%.
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 GPZ400
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| steering and suspension |
|
71 | 28.1 |
| brakes |
|
71 | 28.1 |
| lighting and signalling |
|
51 | 20.2 |
| drive system |
|
13 | 5.1 |
| fuel and exhaust |
|
12 | 4.7 |
| tyres and wheels |
|
11 | 4.3 |
| lamps and reflectors |
|
8 | 3.2 |
| suspension |
|
6 | 2.4 |
| driving controls |
|
5 | 2 |
| steering |
|
5 | 2 |
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 GPZ400 beats 0 of its 4 closest rivals (KAWASAKI ER5, SUZUKI GS500, SUZUKI AN400).
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 GPZ400.
Pass rate by registration year
Best year to buy used: 1985 (72.5% pass). Weakest: 1987 (60.8%).
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.