SUZUKI GSF 650 K6

656cc Petrol Class 2

#2611 of 5426 overall #320 of 680 SUZUKIs #1643 of 2787 other bikes

84.5%

first-time pass rate

8.7%

failed outright

14,792

median miles at test

3,574

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2009–2025

The GSF 650 K6's first-time pass rate has fallen 4.6 points since 2009, 90.2% to 85.6%.

Pass rate by mileage

how the GSF 650 K6's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage GSF 650 K6 passes first time 90.2% of the time; by 50k that's 70.0%.

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 650 K6

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
brakes	129	22.5	0.6×
lighting and signalling	96	16.8	0.5×
tyres and wheels	90	15.7	1.1×
lamps and reflectors	74	12.9	0.8×
drive system	37	6.5	1.1×
tyres	33	5.8	1.2×
fuel and exhaust	32	5.6	1.0×
suspension	29	5.1	1.0×
structure and attachments	28	4.9	0.9×
steering and suspension	25	4.4	0.2×

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 650 K6 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 HONDA VFR800 FI 86.7% pass · 89.4k 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 650 K6.

Pass rate by registration year

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

Best year to buy used: 2006 (85.1% pass). Weakest: 2007 (83.5%).

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.

SUZUKI GSF 650 K6 FAQ

answers computed from the data above · terms in the glossary

Is the SUZUKI GSF 650 K6 reliable?

The SUZUKI GSF 650 K6 is about average for its class: 84.5% of its 3,574 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #2611 of 5426 models.

What does a GSF 650 K6 fail its MOT on most?

brakes — 23% of all defects recorded against failed GSF 650 K6 tests.

How many miles will a GSF 650 K6 last?

The median GSF 650 K6 shows 14,792 miles at test, and examples around 50k miles still pass 70.0% of the time — mileage alone rarely kills one.