SUZUKI GSF 600 K4
Pass rate over time
The GSF 600 K4's first-time pass rate has risen 6.1 points since 2008, 80.4% to 86.5%.
Pass rate by mileage
A low-mileage GSF 600 K4 passes first time 81.9% of the time; by 20k that's 77.8%.
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 GSF 600 K4
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| brakes |
|
14 | 27.5 |
| tyres and wheels |
|
9 | 17.6 |
| lamps and reflectors |
|
7 | 13.7 |
| lighting and signalling |
|
6 | 11.8 |
| drive system |
|
4 | 7.8 |
| tyres |
|
3 | 5.9 |
| structure and attachments |
|
3 | 5.9 |
| fuel and exhaust |
|
2 | 3.9 |
| steering and suspension |
|
2 | 3.9 |
| steering |
|
1 | 2 |
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 GSF 600 K4 beats 3 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 GSF 600 K4.
Pass rate by registration year
Best year to buy used: 2004 (82.9% pass). Weakest: 2004 (82.9%).
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.