Model report · 2005–2025
NORTON SS 650
650cc
Petrol
Class 2
83.1%
first-time pass rate
6.8%
failed outright
8,221
median miles at test
59
MOT tests, 2005–2025
What fails on a SS 650
failure defects by component group · advisories excluded
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| body and structure |
|
3 | 37.5 |
| tyres and wheels |
|
2 | 25 |
| brakes |
|
1 | 12.5 |
| drive system |
|
1 | 12.5 |
| lighting and signalling |
|
1 | 12.5 |
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 SS 650 beats 3 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
HONDA
VFR800 FI
86.7% pass · 89.4k 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 SS 650.