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

KAWASAKI Z 440-D6

443cc Petrol Class 2
74.8%
first-time pass rate
12.6%
failed outright
20,777
median miles at test
119
MOT tests, 2005–2025

What fails on a Z 440-D6

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
8 20.5
steering and suspension
8 20.5
brakes
7 17.9
Items Not Tested
4 10.3
tyres
3 7.7
fuel and exhaust
2 5.1
body and structure
2 5.1
structure and attachments
2 5.1
suspension
2 5.1
drive system
1 2.6

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 Z 440-D6 beats 0 of its 4 closest rivals (KAWASAKI ER5, YAMAHA XV535, SUZUKI GS500).

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 Z 440-D6.

Pass rate by registration year

how each model-year cohort fares · registration year from first use date

Best year to buy used: 1985 (84.4% pass). Weakest: 1984 (62.3%).

58%73%89%1984: 62.3% pass (53 tests)1985: 84.4% pass (64 tests)19841985

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.