ZNEN ZN 50 QT-11D

50cc Petrol Class 1

64.3%

first-time pass rate

26.6%

failed outright

4,166

median miles at test

199

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2020–2022

The ZN 50 QT-11D's first-time pass rate has fallen 19.9 points since 2020, 80.4% to 60.5%.

What fails on a ZN 50 QT-11D

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lamps and reflectors	79	57.2
steering	15	10.9
structure and attachments	14	10.1
suspension	10	7.2
tyres	8	5.8
brakes	7	5.1
wheels	2	1.4
audible warning (Horn)	2	1.4
Identification of the vehicle	1	0.7

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 ZN 50 QT-11D beats 0 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 ZN 50 QT-11D.

Pass rate by registration year

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

Best year to buy used: 2018 (67.3% pass). Weakest: 2017 (61.4%).

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.