ZNEN ZN

124cc Petrol Class 1

#4952 of 5426 overall #2 of 4 ZNENs #492 of 734 commuter bikes

66.3%

first-time pass rate

24.2%

failed outright

4,799

median miles at test

2,776

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2017–2025

The ZN's first-time pass rate has fallen 3.1 points since 2017, 67.9% to 64.8%.

Pass rate by mileage

how the ZN's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage ZN passes first time 66.4% of the time; by 20k that's 71.1%.

First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.

What fails on a ZN

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lamps and reflectors	460	27	7.0×
brakes	362	21.2	2.1×
suspension	216	12.7	7.6×
tyres	184	10.8	7.9×
steering	143	8.4	11.1×
lighting and signalling	98	5.7	0.5×
structure and attachments	92	5.4	4.0×
steering and suspension	62	3.6	0.6×
tyres and wheels	51	3	0.7×
audible warning (Horn)	38	2.2	7.5×

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

same type, similar capacity, high test volume

On first-time pass rate the ZN beats 0 of its 4 closest rivals (YAMAHA YBR 125, HONDA CG125, HONDA CBF125).

YAMAHA YBR 125 71.0% pass · 125k tests HONDA CG125 72.2% pass · 89.3k tests HONDA CBF125 73.3% pass · 84.4k tests GILERA RUNNER 70.8% pass · 69.9k 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.

Pass rate by registration year

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

Best year to buy used: 2017 (74.8% pass). Weakest: 2016 (63.5%).

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 FAQ

answers computed from the data above · terms in the glossary

Is the ZNEN ZN reliable?

The ZNEN ZN is less reliable than average for its class: 66.3% of its 2,776 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4952 of 5426 models.

What does a ZN fail its MOT on most?

lamps and reflectors — 27% of all defects recorded against failed ZN tests.

What is the best year of ZN to buy used?

By first-time pass rate, 2017-registered examples do best (74.8%) and 2016 worst (63.5%). Condition and history still trump the year.

How many miles will a ZN last?

The median ZN shows 4,799 miles at test, and examples around 20k miles still pass 71.1% of the time — mileage alone rarely kills one.