Model report · 2005–2025
KAWASAKI ZX4
399cc
Petrol
Class 2
67.9%
first-time pass rate
21.4%
failed outright
28,967
median miles at test
84
MOT tests, 2005–2025
What fails on a ZX4
failure defects by component group · advisories excluded
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| brakes |
|
16 | 26.7 |
| steering and suspension |
|
15 | 25 |
| lighting and signalling |
|
13 | 21.7 |
| reg plates and vin |
|
5 | 8.3 |
| drive system |
|
4 | 6.7 |
| body and structure |
|
2 | 3.3 |
| fuel and exhaust |
|
2 | 3.3 |
| tyres and wheels |
|
1 | 1.7 |
| lamps and reflectors |
|
1 | 1.7 |
| suspension |
|
1 | 1.7 |
Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.
How rivals compare
same type, similar capacity, high test volume
On first-time pass rate the ZX4 beats 0 of its 4 closest rivals (KAWASAKI ER5, SUZUKI GS500, SUZUKI AN400).
KAWASAKI
ER5
77.4% pass · 53.1k tests
SUZUKI
GS500
76.4% pass · 44.9k tests
SUZUKI
AN400
86.2% pass · 27.1k tests
SUZUKI
DR-Z400S
80.4% pass · 26.8k tests
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 ZX4.