BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ ZNEN/ZN 50 QT-E TOMMY
Model report · 2005–2025

ZNEN ZN 50 QT-E TOMMY

49cc Petrol Class 1
69.0%
first-time pass rate
17.1%
failed outright
3,549
median miles at test
158
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2014–2015

The ZN 50 QT-E TOMMY's first-time pass rate has fallen 1.6 points since 2014, 61.0% to 59.4%.

58%60%62%2014: 61.0% pass (41 tests)2015: 59.4% pass (32 tests)20142015

What fails on a ZN 50 QT-E TOMMY

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
brakes
20 29.4
lighting and signalling
16 23.5
tyres and wheels
12 17.6
fuel and exhaust
4 5.9
steering and suspension
4 5.9
lamps and reflectors
4 5.9
steering
2 2.9
reg plates and vin
2 2.9
body and structure
2 2.9
structure and attachments
2 2.9

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 ZN 50 QT-E TOMMY beats 2 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 ZN 50 QT-E TOMMY.

Pass rate by registration year

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

Best year to buy used: 2011 (68.0% pass). Weakest: 2011 (68.0%).

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.