Piaggio Vespa PX vs Honda PCX 125

The Piaggio Vespa PX passes its MOT first time more often than the Honda PCX 125: 86.0% vs 81.1%, a 4.9-point lead.

MOT reliability, side by side

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

Metric	Piaggio Vespa PX	Honda PCX 125
First-time pass rate	86.0%	81.1%
Outright fail rate	8.7%	12.9%
Vs comparable bikes (age & mileage adjusted)	+12.3 pts	+8.2 pts
Engine size	125cc	125cc
Rank among all models	#2197 of 5428	#3358 of 5428
Median miles at test	13,569	16,405
MOT tests analysed	265	88,608
Most common failure	lighting and signalling	brakes

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 mileage

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

Mileage	Piaggio Vespa PX	Honda PCX 125
0k-10k miles	93.6%	88.4%
10k-20k miles	90.2%	79.3%
20k-30k miles	86.1%	78.0%
30k-40k miles	80.5%	77.0%

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

PIAGGIO VESPA PX 86.0% pass · 265 tests HONDA PCX 125 81.1% pass · 88.6k tests

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