BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025

KYMCO ZX

49cc Petrol Class 1
75.1%
first-time pass rate
15.4%
failed outright
10,944
median miles at test
2,191
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2005–2018

The ZX's first-time pass rate has held steady since 2005 (78.8% → 78.1%).

65%75%84%2005: 78.8% pass (66 tests)2006: 79.4% pass (257 tests)2007: 74.1% pass (263 tests)2008: 80.9% pass (235 tests)2009: 71.2% pass (229 tests)2010: 70.1% pass (211 tests)2011: 71.8% pass (195 tests)2012: 71.7% pass (159 tests)2013: 75.8% pass (132 tests)2014: 71.7% pass (113 tests)2015: 80.0% pass (85 tests)2016: 74.2% pass (62 tests)2017: 68.3% pass (60 tests)2018: 78.1% pass (32 tests)20052018

Pass rate by mileage

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

A low-mileage ZX passes first time 80.8% of the time; by 30k that's 73.3%.

64%74%84%0k: 80.8% pass (980 tests)10k: 71.6% pass (867 tests)20k: 66.4% pass (274 tests)30k: 73.3% pass (45 tests)0k20k30k

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 ZX

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
295 38.9 2.0×
steering and suspension
132 17.4 1.7×
tyres and wheels
103 13.6 2.1×
brakes
102 13.5 0.9×
fuel and exhaust
67 8.8 3.8×
body and structure
22 2.9 1.9×
lamps and reflectors
16 2.1 0.2×
reg plates and vin
13 1.7 1.0×
tyres
4 0.5 0.3×
driving controls
4 0.5 0.8×

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 ZX beats 4 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 ZX.

Pass rate by registration year

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

Best year to buy used: 2001 (78.3% pass). Weakest: 2006 (71.7%).

70%75%80%1999: 76.3% pass (59 tests)2000: 76.3% pass (447 tests)2001: 78.3% pass (492 tests)2002: 74.7% pass (308 tests)2003: 74.7% pass (304 tests)2004: 72.8% pass (312 tests)2005: 73.5% pass (170 tests)2006: 71.7% pass (53 tests)199920032006

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.

KYMCO ZX FAQ

answers computed from the data above · terms in the glossary

Is the KYMCO ZX reliable?

The KYMCO ZX is about average for its class: 75.1% of its 2,191 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4289 of 5426 models.

What does a ZX fail its MOT on most?

lighting and signalling — 39% of all defects recorded against failed ZX tests.

What is the best year of ZX to buy used?

By first-time pass rate, 2001-registered examples do best (78.3%) and 2006 worst (71.7%). Condition and history still trump the year.

How many miles will a ZX last?

The median ZX shows 10,944 miles at test, and examples around 30k miles still pass 73.3% of the time — mileage alone rarely kills one.