ADLY FOX 50

49cc Petrol Class 1

#4274 of 5426 overall #1 of 3 ADLYs #136 of 455 moped bikes

75.2%

first-time pass rate

18.9%

failed outright

7,556

median miles at test

270

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2007

The FOX 50's first-time pass rate has risen 11.5 points since 2006, 75.0% to 86.5%.

What fails on a FOX 50

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lighting and signalling	39	34.2
brakes	28	24.6
steering and suspension	24	21.1
fuel and exhaust	10	8.8
tyres and wheels	9	7.9
driving controls	3	2.6
reg plates and vin	1	0.9

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 FOX 50 beats 4 of its 4 closest rivals (PEUGEOT SPEEDFIGHT, PIAGGIO ZIP, PIAGGIO NRG).

PEUGEOT SPEEDFIGHT 65.2% pass · 83.7k tests PIAGGIO ZIP 71.3% pass · 79.0k tests PIAGGIO NRG 65.5% pass · 40.5k tests PEUGEOT VIVACITY 70.4% pass · 29.7k 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 FOX 50.

Pass rate by registration year

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

Best year to buy used: 2003 (81.2% pass). Weakest: 2001 (63.9%).

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.