BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025

YAMAHA 660

660cc Petrol Class 2
83.2%
first-time pass rate
11.6%
failed outright
23,610
median miles at test
95
MOT tests, 2005–2025

What fails on a 660

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
brakes
5 31.2
lighting and signalling
4 25
steering and suspension
2 12.5
lamps and reflectors
2 12.5
reg plates and vin
1 6.2
structure and attachments
1 6.2
suspension
1 6.2

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 660 beats 3 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 660.