BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ SUZUKI/GSF 1250 SA K8
Model report · 2005–2025

SUZUKI GSF 1250 SA K8

1255cc Petrol Class 2
88.9%
first-time pass rate
5.4%
failed outright
15,930
median miles at test
5,432
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2010–2025

The GSF 1250 SA K8's first-time pass rate has fallen 1.6 points since 2010, 90.7% to 89.1%.

83%88%93%2010: 90.7% pass (43 tests)2011: 86.7% pass (368 tests)2012: 89.3% pass (448 tests)2013: 88.4% pass (457 tests)2014: 91.4% pass (453 tests)2015: 91.2% pass (441 tests)2016: 89.8% pass (432 tests)2017: 87.2% pass (423 tests)2018: 88.1% pass (318 tests)2019: 84.7% pass (307 tests)2020: 90.7% pass (270 tests)2021: 88.3% pass (324 tests)2022: 87.4% pass (325 tests)2023: 89.6% pass (317 tests)2024: 90.3% pass (248 tests)2025: 89.1% pass (258 tests)20102025

Pass rate by mileage

how the GSF 1250 SA K8's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage GSF 1250 SA K8 passes first time 92.5% of the time; by 50k that's 88.1%.

79%87%95%0k: 92.5% pass (1,504 tests)10k: 90.2% pass (1,849 tests)20k: 85.7% pass (1,015 tests)30k: 85.2% pass (568 tests)40k: 81.5% pass (232 tests)50k: 88.1% pass (135 tests)0k30k50k

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 1250 SA K8

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
brakes
137 25.9 0.4×
lamps and reflectors
80 15.2 0.7×
lighting and signalling
75 14.2 0.3×
tyres and wheels
60 11.4 0.4×
suspension
49 9.3 1.0×
tyres
45 8.5 1.1×
steering and suspension
33 6.2 0.2×
steering
18 3.4 0.7×
structure and attachments
17 3.2 0.3×
reg plates and vin
14 2.7 0.4×

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 1250 SA K8 beats 3 of its 4 closest rivals (BMW R1200, BMW R1150, TRIUMPH SPRINT).

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 1250 SA K8.

Pass rate by registration year

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

Best year to buy used: 2009 (89.1% pass). Weakest: 2007 (87.2%).

86%88%90%2007: 87.2% pass (615 tests)2008: 89.0% pass (3,786 tests)2009: 89.1% pass (984 tests)200720082009

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 1250 SA K8 FAQ

answers computed from the data above · terms in the glossary

Is the SUZUKI GSF 1250 SA K8 reliable?

The SUZUKI GSF 1250 SA K8 is more reliable than average for its class: 88.9% of its 5,432 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #1303 of 5426 models.

What does a GSF 1250 SA K8 fail its MOT on most?

brakes — 26% of all defects recorded against failed GSF 1250 SA K8 tests.

What is the best year of GSF 1250 SA K8 to buy used?

By first-time pass rate, 2009-registered examples do best (89.1%) and 2007 worst (87.2%). Condition and history still trump the year.

How many miles will a GSF 1250 SA K8 last?

The median GSF 1250 SA K8 shows 15,930 miles at test, and examples around 50k miles still pass 88.1% of the time — mileage alone rarely kills one.