BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ AJS/DD50E
Model report · 2005–2025

AJS DD50E

49cc Petrol Class 1
#5000 of 5426 overall #35 of 45 AJSs #318 of 455 moped bikes
65.3%
first-time pass rate
22.8%
failed outright
3,642
median miles at test
259
MOT tests, 2005–2025

What fails on a DD50E

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
60 31.7
steering and suspension
50 26.5
brakes
43 22.8
drive system
13 6.9
body and structure
6 3.2
tyres and wheels
6 3.2
fuel and exhaust
5 2.6
reg plates and vin
2 1.1
Items Not Tested
2 1.1
driving controls
2 1.1

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 DD50E beats 1 of its 4 closest rivals (PEUGEOT SPEEDFIGHT, PIAGGIO ZIP, PIAGGIO NRG).

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 DD50E.

Pass rate by registration year

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

Best year to buy used: 2003 (68.7% pass). Weakest: 2003 (68.7%).

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.