Pass rate over time
The ZN 50 QT-56's first-time pass rate has fallen 2.6 points since 2020, 73.7% to 71.1%.
What fails on a ZN 50 QT-56
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| lamps and reflectors |
|
115 | 49.4 | 8.9× |
| steering |
|
40 | 17.2 | 17.1× |
| brakes |
|
28 | 12 | 1.0× |
| suspension |
|
24 | 10.3 | 4.6× |
| structure and attachments |
|
11 | 4.7 | 2.9× |
| audible warning (Horn) |
|
5 | 2.1 | 5.4× |
| tyres |
|
5 | 2.1 | 1.4× |
| Identification of the vehicle |
|
3 | 1.3 | 2.6× |
| wheels |
|
2 | 0.9 | 6.6× |
Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.
How rivals compare
On first-time pass rate the ZN 50 QT-56 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-56.
Pass rate by registration year
Best year to buy used: 2017 (74.1% pass). Weakest: 2016 (65.0%).
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.
ZNEN ZN 50 QT-56 FAQ
Is the ZNEN ZN 50 QT-56 reliable?
The ZNEN ZN 50 QT-56 is less reliable than average for its class: 70.0% of its 506 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4733 of 5426 models.
What does a ZN 50 QT-56 fail its MOT on most?
lamps and reflectors — 49% of all defects recorded against failed ZN 50 QT-56 tests.
What is the best year of ZN 50 QT-56 to buy used?
By first-time pass rate, 2017-registered examples do best (74.1%) and 2016 worst (65.0%). Condition and history still trump the year.