KAWASAKI Z
Pass rate over time
The Z's first-time pass rate has risen 7.6 points since 2006, 82.7% to 90.3%.
Pass rate by mileage
A low-mileage Z passes first time 85.7% of the time; by 40k that's 88.6%.
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 Z
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| lighting and signalling |
|
38 | 26.6 | 0.8× |
| brakes |
|
35 | 24.5 | 0.9× |
| steering and suspension |
|
31 | 21.7 | 0.9× |
| lamps and reflectors |
|
9 | 6.3 | 0.3× |
| drive system |
|
8 | 5.6 | 1.3× |
| tyres and wheels |
|
7 | 4.9 | 0.4× |
| fuel and exhaust |
|
6 | 4.2 | 0.7× |
| reg plates and vin |
|
5 | 3.5 | 1.2× |
| body and structure |
|
2 | 1.4 | 0.6× |
| suspension |
|
2 | 1.4 | 0.4× |
Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.
How rivals compare
On first-time pass rate the Z beats 1 of its 4 closest rivals (BMW R1200, BMW R1150, TRIUMPH SPRINT).
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.
Pass rate by registration year
Best year to buy used: 1980 (89.5% pass). Weakest: 1977 (74.5%).
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.
KAWASAKI Z FAQ
Is the KAWASAKI Z reliable?
The KAWASAKI Z is about average for its class: 83.8% of its 754 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #2792 of 5426 models.
What does a Z fail its MOT on most?
lighting and signalling — 27% of all defects recorded against failed Z tests.
What is the best year of Z to buy used?
By first-time pass rate, 1980-registered examples do best (89.5%) and 1977 worst (74.5%). Condition and history still trump the year.
How many miles will a Z last?
The median Z shows 24,564 miles at test, and examples around 40k miles still pass 88.6% of the time — mileage alone rarely kills one.