BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025

KAWASAKI ZX4R

400cc Petrol Class 2
73.4%
first-time pass rate
20.3%
failed outright
29,840
median miles at test
64
MOT tests, 2005–2025

What fails on a ZX4R

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
brakes
19 31.1
steering and suspension
14 23
lighting and signalling
12 19.7
body and structure
6 9.8
steering
3 4.9
structure and attachments
2 3.3
Items Not Tested
2 3.3
tyres and wheels
1 1.6
drive system
1 1.6
fuel and exhaust
1 1.6

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 ZX4R 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 ZX4R.