Data as of: DVSA MOT results to 2025
SUZUKI GSF 600 SX
The pass rate is the MOT first-time pass: a roadworthiness check of the items an MOT covers (brakes, lights, tyres, steering, structure, emissions), not a full mechanical inspection of engine or gearbox internals. It is a reliability signal, not a complete measure of mechanical reliability. What this measures.
“vs expected” adjusts for age, mileage and test class, so a cherished classic and a hard-used commuter are compared fairly. How this works.
Pass rate over time
The GSF 600 SX's first-time pass rate has fallen 18.0 points since 2006, 85.7% to 67.7%.
Pass rate by mileage
A low-mileage GSF 600 SX passes first time 84.6% of the time; by 40k that's 80.6%.
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 600 SX
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| brakes |
|
65 | 31.4 | 1.7× |
| lighting and signalling |
|
43 | 20.8 | 1.2× |
| steering and suspension |
|
37 | 17.9 | 1.9× |
| tyres and wheels |
|
22 | 10.6 | 1.6× |
| lamps and reflectors |
|
10 | 4.8 | 0.8× |
| drive system |
|
9 | 4.3 | 1.7× |
| fuel and exhaust |
|
6 | 2.9 | 0.9× |
| body and structure |
|
6 | 2.9 | 1.5× |
| reg plates and vin |
|
5 | 2.4 | 1.2× |
| tyres |
|
4 | 1.9 | 0.8× |
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
On first-time pass rate the GSF 600 SX beats 0 of its 4 closest rivals (KAWASAKI ZX-6R, SUZUKI GSF600, YAMAHA FZS600).
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 600 SX.
Compare with any bike
More SUZUKI models
Pass rate by registration year
Highest pass rate: 1998 (81.0%). Lowest: 2000 (72.0%). Every GSF 600 SX year compared →
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 600 SX FAQ
Is the SUZUKI GSF 600 SX reliable?
The SUZUKI GSF 600 SX is less reliable than average for its class: 74.8% of its 567 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #4324 of 5428 models.
What does a GSF 600 SX fail its MOT on most?
brakes: 31% of all defects recorded against failed GSF 600 SX tests.
What is the best year of GSF 600 SX to buy used?
By first-time pass rate, 1998-registered examples do best (81.0%) and 2000 worst (72.0%). Condition and history still trump the year.
How many miles will a GSF 600 SX last?
The median GSF 600 SX shows 17,855 miles at test, and examples around 40k miles still pass 80.6% of the time, so mileage alone rarely decides the result.
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