SUZUKI GSF 650 K8

656cc Petrol Class 2

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

84.5%

first-time pass rate

7.8%

failed outright

14,119

median miles at test

2,230

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2011–2025

The GSF 650 K8's first-time pass rate has fallen 5.3 points since 2011, 90.4% to 85.1%.

Pass rate by mileage

how the GSF 650 K8's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage GSF 650 K8 passes first time 89.0% of the time; by 50k that's 71.8%.

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 650 K8

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
brakes	69	24	0.6×
lamps and reflectors	55	19.1	1.1×
lighting and signalling	41	14.2	0.4×
tyres and wheels	36	12.5	0.8×
steering and suspension	20	6.9	0.3×
structure and attachments	19	6.6	1.0×
tyres	16	5.6	1.0×
suspension	13	4.5	0.8×
drive system	10	3.5	0.4×
body and structure	9	3.1	0.7×

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 K8 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 K8.

Pass rate by registration year

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

Best year to buy used: 2010 (88.4% pass). Weakest: 2008 (83.8%).

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 K8 FAQ

answers computed from the data above · terms in the glossary

Is the SUZUKI GSF 650 K8 reliable?

The SUZUKI GSF 650 K8 is about average for its class: 84.5% of its 2,230 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 K8 fail its MOT on most?

brakes — 24% of all defects recorded against failed GSF 650 K8 tests.

What is the best year of GSF 650 K8 to buy used?

By first-time pass rate, 2010-registered examples do best (88.4%) and 2008 worst (83.8%). Condition and history still trump the year.

How many miles will a GSF 650 K8 last?

The median GSF 650 K8 shows 14,119 miles at test, and examples around 50k miles still pass 71.8% of the time — mileage alone rarely kills one.