BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ AJS/DD125
Model report · 2005–2025

AJS DD125

125cc Petrol Class 1
#5121 of 5426 overall #37 of 45 AJSs #577 of 734 commuter bikes
62.7%
first-time pass rate
27.0%
failed outright
5,596
median miles at test
252
MOT tests, 2005–2025

What fails on a DD125

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
76 37.4
steering and suspension
30 14.8
drive system
20 9.9
tyres and wheels
19 9.4
lamps and reflectors
18 8.9
brakes
14 6.9
structure and attachments
9 4.4
suspension
7 3.4
body and structure
5 2.5
driving controls
5 2.5

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 DD125 beats 0 of its 4 closest rivals (YAMAHA YBR 125, HONDA CG125, HONDA CBF125).

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 DD125.

Pass rate by registration year

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

Best year to buy used: 2009 (69.2% pass). Weakest: 2008 (56.8%).

54%63%72%2008: 56.8% pass (81 tests)2009: 69.2% pass (52 tests)20082009

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.