Kymco ZX 50 vs Piaggio Zip

The Kymco ZX 50 passes its MOT first time more often than the Piaggio Zip: 72.5% vs 71.3%, a 1.2-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025

Metric	Kymco ZX 50	Piaggio Zip
First-time pass rate	72.5%	71.3%
Outright fail rate	16.7%	20.4%
Vs comparable bikes (age & mileage adjusted)	+1.5 pts	-1.0 pts
Engine size	49cc	49cc
Rank among all models	#4542 of 5428	#4631 of 5428
Median miles at test	10,052	8,882
MOT tests analysed	258	78,993
Most common failure	lighting and signalling	lighting and signalling

First-time outcomes on normal tests, 2005–2025. "Most common failure" is the component group with the most recorded defects on failed tests. Read pass rates against test counts: a smaller sample is noisier. Source: DVSA anonymised MOT results.

"Vs comparable bikes" is the first-time pass rate minus the rate expected for each bike's own mix of age, mileage and test class, in percentage points: positive means better than comparable bikes. How this works.

Pass rate by test year

first-time MOT pass rate in each calendar year both bikes were tested

Test year	Kymco ZX 50	Piaggio Zip
2006	78.0%	73.7%
2007	66.7%	71.0%
2008	67.5%	72.4%

Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.

Pass rate by mileage

first-time MOT pass rate by miles on the clock at test

Mileage	Kymco ZX 50	Piaggio Zip
0k-10k miles	75.2%	75.2%
10k-20k miles	70.4%	66.7%

Bands with fewer than 30 tests for either bike are left out.

KYMCO ZX 50 72.5% pass · 258 tests PIAGGIO ZIP 71.3% pass · 79.0k tests

See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.