Model report · 2005–2025
SUZUKI GS425
424cc
Petrol
Class 2
77.4%
first-time pass rate
9.7%
failed outright
22,083
median miles at test
155
MOT tests, 2005–2025
What fails on a GS425
failure defects by component group · advisories excluded
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| lighting and signalling |
|
10 | 30.3 |
| brakes |
|
7 | 21.2 |
| steering and suspension |
|
5 | 15.2 |
| tyres and wheels |
|
4 | 12.1 |
| driving controls |
|
2 | 6.1 |
| reg plates and vin |
|
2 | 6.1 |
| drive system |
|
2 | 6.1 |
| body and structure |
|
1 | 3 |
Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.
How rivals compare
same type, similar capacity, high test volume
On first-time pass rate the GS425 beats 1 of its 4 closest rivals (KAWASAKI ER5, YAMAHA XV535, SUZUKI GS500).
KAWASAKI
ER5
77.4% pass · 53.1k tests
YAMAHA
XV535
82.7% pass · 48.1k tests
SUZUKI
GS500
76.4% pass · 44.9k tests
SUZUKI
AN400
86.2% pass · 27.1k 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 GS425.
Pass rate by registration year
how each model-year cohort fares · registration year from first use date
Best year to buy used: 1980 (83.6% pass). Weakest: 1979 (73.3%).
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.