AJS MODEL 18

500cc Petrol Class 2

#92 of 5426 overall #2 of 45 AJSs #60 of 2787 other bikes

94.8%

first-time pass rate

0.4%

failed outright

7,529

median miles at test

267

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2010

The MODEL 18's first-time pass rate has fallen 6.2 points since 2006, 97.1% to 90.9%.

What fails on a MODEL 18

failure defects by component group · advisories excluded

Component group	Share of defects	Defects	% of defects
lighting and signalling		2	66.7
drive system		1	33.3

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 MODEL 18 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 SUZUKI SV650S 80.6% pass · 84.6k 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 MODEL 18.