KAWASAKI Z400F

399cc Petrol Class 2

#4363 of 5426 overall #535 of 592 KAWASAKIs #2689 of 2787 other bikes

74.4%

first-time pass rate

15.3%

failed outright

26,913

median miles at test

308

MOT tests, 2005–2025

Pass rate by mileage

how the Z400F's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage Z400F passes first time 87.5% of the time; by 40k that's 82.1%.

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 Z400F

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lighting and signalling	30	31.6
steering and suspension	21	22.1
brakes	15	15.8
tyres and wheels	10	10.5
lamps and reflectors	4	4.2
reg plates and vin	4	4.2
drive system	3	3.2
driving controls	3	3.2
body and structure	3	3.2
steering	2	2.1

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 Z400F 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 Z400F.

Pass rate by registration year

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

Best year to buy used: 1984 (77.7% pass). Weakest: 1984 (77.7%).

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.