SUZUKI GSF 600 SK4

600cc Petrol Class 2

#3146 of 5426 overall #414 of 680 SUZUKIs #2001 of 2787 other bikes

82.2%

first-time pass rate

10.3%

failed outright

14,258

median miles at test

544

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2007–2014

The GSF 600 SK4's first-time pass rate has held steady since 2007 (79.5% → 78.8%).

Pass rate by mileage

how the GSF 600 SK4's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage GSF 600 SK4 passes first time 87.2% of the time; by 30k that's 85.4%.

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 SK4

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	18	19.6	0.7×
tyres and wheels	15	16.3	1.0×
brakes	13	14.1	0.6×
lamps and reflectors	12	13	0.6×
steering and suspension	9	9.8	0.4×
structure and attachments	6	6.5	1.3×
body and structure	5	5.4	1.5×
suspension	5	5.4	0.7×
fuel and exhaust	5	5.4	1.0×
drive system	4	4.3	0.8×

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

same type, similar capacity, high test volume

On first-time pass rate the GSF 600 SK4 beats 3 of its 4 closest rivals (KAWASAKI ZX-6R, SUZUKI GSF600, YAMAHA FZS600).

KAWASAKI ZX-6R 78.1% pass · 174k tests SUZUKI GSF600 77.3% pass · 143k tests YAMAHA FZS600 82.6% pass · 137k tests SUZUKI SV650S 80.6% pass · 84.6k 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 GSF 600 SK4.

Pass rate by registration year

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

Best year to buy used: 2004 (82.0% pass). Weakest: 2005 (80.6%).

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.

SUZUKI GSF 600 SK4 FAQ

answers computed from the data above · terms in the glossary

Is the SUZUKI GSF 600 SK4 reliable?

The SUZUKI GSF 600 SK4 is less reliable than average for its class: 82.2% of its 544 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #3146 of 5426 models.

What does a GSF 600 SK4 fail its MOT on most?

lighting and signalling — 20% of all defects recorded against failed GSF 600 SK4 tests.

How many miles will a GSF 600 SK4 last?

The median GSF 600 SK4 shows 14,258 miles at test, and examples around 30k miles still pass 85.4% of the time — mileage alone rarely kills one.