ZONTES ZT

125cc Petrol Class 1

#5183 of 5426 overall #6 of 11 ZONTESs #612 of 734 commuter bikes

60.9%

first-time pass rate

26.4%

failed outright

7,926

median miles at test

2,392

MOT tests, 2005–2025

Pass rate over time

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

The ZT's first-time pass rate has fallen 4.5 points since 2017, 63.3% to 58.8%.

Pass rate by mileage

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

A low-mileage ZT passes first time 62.5% of the time; by 30k that's 48.6%.

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 ZT

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lamps and reflectors	629	30.4	9.6×
structure and attachments	417	20.1	15.0×
brakes	362	17.5	2.3×
suspension	245	11.8	10.8×
steering	170	8.2	13.9×
lighting and signalling	99	4.8	0.6×
steering and suspension	60	2.9	0.5×
tyres	41	2	2.5×
drive system	31	1.5	1.3×
audible warning (Horn)	17	0.8	3.9×

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 ZT 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 ZT.

Pass rate by registration year

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

Best year to buy used: 2017 (69.5% pass). Weakest: 2013 (53.4%).

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.

ZONTES ZT FAQ

answers computed from the data above · terms in the glossary

Is the ZONTES ZT reliable?

The ZONTES ZT is less reliable than average for its class: 60.9% of its 2,392 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #5183 of 5426 models.

What does a ZT fail its MOT on most?

lamps and reflectors — 30% of all defects recorded against failed ZT tests.

What is the best year of ZT to buy used?

By first-time pass rate, 2017-registered examples do best (69.5%) and 2013 worst (53.4%). Condition and history still trump the year.

How many miles will a ZT last?

The median ZT shows 7,926 miles at test, and examples around 30k miles still pass 48.6% of the time — mileage alone rarely kills one.