KAWASAKI Z550-G7
Pass rate over time
The Z550-G7's first-time pass rate has fallen 5.6 points since 2006, 77.5% to 71.9%.
Pass rate by mileage
A low-mileage Z550-G7 passes first time 62.2% of the time; by 50k that's 88.1%.
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 Z550-G7
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| brakes |
|
48 | 47.5 |
| steering and suspension |
|
16 | 15.8 |
| lighting and signalling |
|
14 | 13.9 |
| tyres and wheels |
|
7 | 6.9 |
| lamps and reflectors |
|
4 | 4 |
| structure and attachments |
|
4 | 4 |
| fuel and exhaust |
|
3 | 3 |
| suspension |
|
2 | 2 |
| driving controls |
|
2 | 2 |
| body and structure |
|
1 | 1 |
Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.
How rivals compare
On first-time pass rate the Z550-G7 beats 0 of its 4 closest rivals (KAWASAKI ZX-6R, SUZUKI GSF600, YAMAHA FZS600).
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 Z550-G7.
Pass rate by registration year
Best year to buy used: 1993 (82.2% pass). Weakest: 1991 (75.3%).
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.