ARIEL SQUARE 4

1000cc Petrol Class 2

94.3%

first-time pass rate

0.8%

failed outright

5,824

median miles at test

123

MOT tests, 2005–2025

What fails on a SQUARE 4

failure defects by component group · advisories excluded

Component group	Share of defects	Defects	% of defects
brakes		1	100

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 SQUARE 4 beats 4 of its 4 closest rivals (BMW R1200, BMW R1150, TRIUMPH SPRINT).

BMW R1200 92.9% pass · 299k tests BMW R1150 88.5% pass · 171k tests TRIUMPH SPRINT 85.6% pass · 133k tests SUZUKI GSF1200 82.4% pass · 97.6k 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 SQUARE 4.