Vespa (douglas) PK125 vs Honda PCX 125

The Honda PCX 125 passes its MOT first time more often than the Vespa (douglas) PK125: 81.1% vs 80.7%, a 0.4-point lead.

MOT reliability, side by side

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

Metric	Vespa (douglas) PK125	Honda PCX 125
First-time pass rate	80.7%	81.1%
Outright fail rate	14.3%	12.9%
Vs comparable bikes (age & mileage adjusted)	+2.0 pts	+8.2 pts
Engine size	121cc	125cc
Median miles at test	12,543	16,405
MOT tests analysed	161	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	Vespa (douglas) PK125	Honda PCX 125
0k-10k miles	83.3%	88.4%
10k-20k miles	74.0%	79.3%

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

VESPA (DOUGLAS) PK125 80.7% pass · 161 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.