Vespa (douglas) P125X vs Honda PCX 125

The Honda PCX 125 passes its MOT first time more often than the Vespa (douglas) P125X: 81.1% vs 79.4%, a 1.7-point lead.

MOT reliability, side by side

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

Metric	Vespa (douglas) P125X	Honda PCX 125
First-time pass rate	79.4%	81.1%
Outright fail rate	12.0%	12.9%
Vs comparable bikes (age & mileage adjusted)	+1.1 pts	+8.2 pts
Engine size	125cc	125cc
Rank among all models	#3705 of 5428	#3358 of 5428
Median miles at test	14,889	16,405
MOT tests analysed	793	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.

What fails, side by side

share of each bike's MOT tests that failed on the component · lower is better

Component	Vespa (douglas) P125X	Honda PCX 125
Lights & signalling	7.3%	3.9%
Brakes	2.0%	6.7%
Tyres & wheels	2.8%	5.3%
Steering & suspension	3.5%	4.4%
Structure & body	0.5%	0.7%
Fuel & exhaust	0.5%	0.0%

A test that fails on two components counts once in each. Component links go to the bikes most likely to fail on it.

Pass rate by test year

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

Test year	Vespa (douglas) P125X	Honda PCX 125
2013	82.5%	85.2%
2014	75.0%	84.4%
2015	86.5%	83.5%
2016	80.5%	82.5%
2017	82.1%	80.5%

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	Vespa (douglas) P125X	Honda PCX 125
0k-10k miles	84.2%	88.4%
10k-20k miles	77.5%	79.3%
20k-30k miles	72.9%	78.0%
30k-40k miles	80.3%	77.0%
40k-50k miles	81.3%	74.8%

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

Vespa (douglas) P125X vs Honda PCX 125 FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Vespa (douglas) P125X or the Honda PCX 125?

The Honda PCX 125 passes its MOT first time more often than the Vespa (douglas) P125X: 81.1% vs 79.4%, a 1.7-point lead. Adjusted for age, mileage and test class, the Honda PCX 125 still comes out ahead: +1.1 points vs comparable bikes for the Vespa (douglas) P125X, +8.2 for the Honda PCX 125. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Vespa (douglas) P125X fail its MOT on most?

Lights & signalling: 7.3% of Vespa (douglas) P125X MOT tests failed on it, then steering & suspension (3.5%).

What does the Honda PCX 125 fail its MOT on most?

Brakes: 6.7% of Honda PCX 125 MOT tests failed on it, then tyres & wheels (5.3%).

Which holds up better at high mileage, the Vespa (douglas) P125X or the Honda PCX 125?

At 40k-50k miles the Vespa (douglas) P125X passes first time more often: 81.3% for the Vespa (douglas) P125X vs 74.8% for the Honda PCX 125.

VESPA (DOUGLAS) P125X 79.4% pass · 793 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.