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

AJS 500

500cc Petrol Class 2
#1604 of 5426 overall #14 of 45 AJSs #976 of 2787 other bikes
88.0%
first-time pass rate
5.2%
failed outright
13,920
median miles at test
251
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2009

The 500's first-time pass rate has risen 1.2 points since 2006, 89.7% to 90.9%.

89%92%95%2006: 89.7% pass (39 tests)2007: 93.5% pass (31 tests)2009: 90.9% pass (33 tests)20062009

What fails on a 500

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
8 29.6
lamps and reflectors
4 14.8
steering and suspension
3 11.1
tyres and wheels
3 11.1
brakes
3 11.1
body and structure
2 7.4
fuel and exhaust
1 3.7
audible warning (Horn)
1 3.7
driving controls
1 3.7
Items Not Tested
1 3.7

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 500 beats 4 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 500.

Pass rate by registration year

how each model-year cohort fares · registration year from first use date

Best year to buy used: 1961 (96.0% pass). Weakest: 1961 (96.0%).

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.