SUZUKI GSF650 SA K8

656cc Petrol Class 2

#2689 of 5426 overall #331 of 680 SUZUKIs #1692 of 2787 other bikes

84.2%

first-time pass rate

8.9%

failed outright

15,147

median miles at test

2,549

MOT tests, 2005–2025

Pass rate over time

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

The GSF650 SA K8's first-time pass rate has fallen 4.5 points since 2011, 90.4% to 85.9%.

Pass rate by mileage

how the GSF650 SA K8's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage GSF650 SA K8 passes first time 91.2% of the time; by 50k that's 79.2%.

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 GSF650 SA K8

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
brakes	107	28.3	0.7×
lamps and reflectors	63	16.7	1.2×
lighting and signalling	48	12.7	0.4×
tyres and wheels	47	12.4	0.8×
tyres	33	8.7	1.7×
suspension	21	5.6	1.0×
structure and attachments	20	5.3	0.9×
steering and suspension	20	5.3	0.2×
drive system	11	2.9	0.6×
body and structure	8	2.1	0.6×

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 GSF650 SA 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 GSF650 SA K8.

Pass rate by registration year

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

Best year to buy used: 2010 (89.7% pass). Weakest: 2009 (83.7%).

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 GSF650 SA K8 FAQ

answers computed from the data above · terms in the glossary

Is the SUZUKI GSF650 SA K8 reliable?

The SUZUKI GSF650 SA K8 is about average for its class: 84.2% of its 2,549 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #2689 of 5426 models.

What does a GSF650 SA K8 fail its MOT on most?

brakes — 28% of all defects recorded against failed GSF650 SA K8 tests.

What is the best year of GSF650 SA K8 to buy used?

By first-time pass rate, 2010-registered examples do best (89.7%) and 2009 worst (83.7%). Condition and history still trump the year.

How many miles will a GSF650 SA K8 last?

The median GSF650 SA K8 shows 15,147 miles at test, and examples around 50k miles still pass 79.2% of the time — mileage alone rarely kills one.