Model report · 2005–2025
94.1%
first-time pass rate
2.0%
failed outright
9,190
median miles at test
254
MOT tests, 2005–2025
What fails on a G15
failure defects by component group · advisories excluded
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| steering and suspension |
|
3 | 30 |
| brakes |
|
2 | 20 |
| lighting and signalling |
|
2 | 20 |
| tyres and wheels |
|
2 | 20 |
| drive system |
|
1 | 10 |
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 G15 beats 4 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
TRIUMPH
SPRINT
85.6% pass · 133k 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 G15.
Pass rate by registration year
how each model-year cohort fares · registration year from first use date
Best year to buy used: 1965 (97.4% pass). Weakest: 1966 (96.6%).
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.