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

SUZUKI GSF 1250 K8 STREET FIGHTER

1255cc Petrol Class 2
87.5%
first-time pass rate
5.9%
failed outright
12,208
median miles at test
917
MOT tests, 2005–2025

Pass rate over time

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

The GSF 1250 K8 STREET FIGHTER's first-time pass rate has risen 6.1 points since 2011, 84.1% to 90.2%.

72%85%98%2011: 84.1% pass (63 tests)2012: 86.8% pass (76 tests)2013: 88.3% pass (77 tests)2014: 88.0% pass (75 tests)2015: 92.1% pass (76 tests)2016: 89.3% pass (75 tests)2017: 88.7% pass (71 tests)2018: 85.7% pass (49 tests)2019: 85.5% pass (55 tests)2020: 93.3% pass (45 tests)2021: 87.9% pass (58 tests)2022: 91.1% pass (56 tests)2023: 76.4% pass (55 tests)2024: 81.0% pass (42 tests)2025: 90.2% pass (41 tests)20112025

Pass rate by mileage

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

A low-mileage GSF 1250 K8 STREET FIGHTER passes first time 90.4% of the time; by 30k that's 77.8%.

75%84%93%0k: 90.4% pass (365 tests)10k: 89.7% pass (329 tests)20k: 83.6% pass (146 tests)30k: 77.8% pass (45 tests)0k20k30k

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 K8 STREET FIGHTER

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
27 28.1 0.5×
brakes
20 20.8 0.4×
tyres and wheels
13 13.5 0.7×
tyres
8 8.3 1.1×
steering and suspension
8 8.3 0.2×
lamps and reflectors
6 6.2 0.4×
reg plates and vin
4 4.2 0.8×
steering
4 4.2 0.8×
body and structure
3 3.1 0.5×
Identification of the vehicle
3 3.1 1.4×

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 K8 STREET FIGHTER beats 2 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 K8 STREET FIGHTER.

Pass rate by registration year

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

Best year to buy used: 2008 (87.6% pass). Weakest: 2009 (85.7%).

85%87%88%2008: 87.6% pass (783 tests)2009: 85.7% pass (119 tests)20082009

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 K8 STREET FIGHTER FAQ

answers computed from the data above · terms in the glossary

Is the SUZUKI GSF 1250 K8 STREET FIGHTER reliable?

The SUZUKI GSF 1250 K8 STREET FIGHTER is more reliable than average for its class: 87.5% of its 917 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #1748 of 5426 models.

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

lighting and signalling — 28% of all defects recorded against failed GSF 1250 K8 STREET FIGHTER tests.

How many miles will a GSF 1250 K8 STREET FIGHTER last?

The median GSF 1250 K8 STREET FIGHTER shows 12,208 miles at test, and examples around 30k miles still pass 77.8% of the time — mileage alone rarely kills one.