KAWASAKI Z400FLL

399cc Petrol Class 2

67.3%

first-time pass rate

25.8%

failed outright

29,820

median miles at test

159

MOT tests, 2005–2025

Pass rate by mileage

how the Z400FLL's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage Z400FLL passes first time 84.4% of the time; by 30k that's 67.5%.

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 Z400FLL

failure defects by component group · advisories excluded

Component group	Defects	% of defects
brakes	36	28.1
steering and suspension	29	22.7
lighting and signalling	27	21.1
body and structure	10	7.8
tyres and wheels	7	5.5
fuel and exhaust	6	4.7
drive system	4	3.1
suspension	4	3.1
lamps and reflectors	3	2.3
driving controls	2	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 Z400FLL 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 Z400FLL.

Pass rate by registration year

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

Best year to buy used: 1985 (70.7% pass). Weakest: 1986 (60.0%).

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.