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

ZY MOTOR ZY50

49cc Petrol Class 1
65.1%
first-time pass rate
26.8%
failed outright
2,698
median miles at test
284
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2008–2011

The ZY50's first-time pass rate has risen 20.5 points since 2008, 47.2% to 67.7%.

42%57%73%2008: 47.2% pass (36 tests)2009: 62.1% pass (58 tests)2010: 65.8% pass (38 tests)2011: 67.7% pass (31 tests)20082011

What fails on a ZY50

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
75 38.9
brakes
47 24.4
steering and suspension
46 23.8
tyres and wheels
7 3.6
fuel and exhaust
6 3.1
driving controls
5 2.6
Items Not Tested
2 1
body and structure
2 1
reg plates and vin
2 1
lamps and reflectors
1 0.5

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 ZY50 beats 0 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 ZY50.

Pass rate by registration year

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

Best year to buy used: 2006 (66.1% pass). Weakest: 2004 (62.1%).

61%64%67%2004: 62.1% pass (87 tests)2005: 65.1% pass (109 tests)2006: 66.1% pass (59 tests)200420052006

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.