Lambretta LI150 Special vs Honda PCX 125

The Lambretta LI150 Special passes its MOT first time more often than the Honda PCX 125: 90.4% vs 81.1%, a 9.3-point lead.

MOT reliability, side by side

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

Metric	Lambretta LI150 Special	Honda PCX 125
First-time pass rate	90.4%	81.1%
Outright fail rate	4.6%	12.9%
Vs comparable bikes (age & mileage adjusted)	+11.0 pts	+8.2 pts
Engine size	150cc	125cc
Rank among all models	#825 of 5428	#3358 of 5428
Median miles at test	2,054	16,405
MOT tests analysed	1,091	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	Lambretta LI150 Special	Honda PCX 125
Brakes	1.2%	6.7%
Lights & signalling	2.7%	3.9%
Tyres & wheels	0.8%	5.3%
Steering & suspension	1.6%	4.4%
Structure & body	0.4%	0.7%
Fuel & exhaust	0.2%	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	Lambretta LI150 Special	Honda PCX 125
2013	90.4%	85.2%
2014	85.4%	84.4%
2015	95.4%	83.5%
2016	90.6%	82.5%
2017	89.3%	80.5%
2018	95.8%	81.2%

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	Lambretta LI150 Special	Honda PCX 125
0k-10k miles	90.5%	88.4%
10k-20k miles	92.6%	79.3%
20k-30k miles	90.2%	78.0%
30k-40k miles	84.6%	77.0%
40k-50k miles	91.2%	74.8%

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

Lambretta LI150 Special vs Honda PCX 125 FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Lambretta LI150 Special or the Honda PCX 125?

The Lambretta LI150 Special passes its MOT first time more often than the Honda PCX 125: 90.4% vs 81.1%, a 9.3-point lead. Adjusted for age, mileage and test class, the Lambretta LI150 Special still comes out ahead: +11.0 points vs comparable bikes for the Lambretta LI150 Special, +8.2 for the Honda PCX 125. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Lambretta LI150 Special fail its MOT on most?

Lights & signalling: 2.7% of Lambretta LI150 Special MOT tests failed on it, then steering & suspension (1.6%).

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 Lambretta LI150 Special or the Honda PCX 125?

At 40k-50k miles the Lambretta LI150 Special passes first time more often: 91.2% for the Lambretta LI150 Special vs 74.8% for the Honda PCX 125.

LAMBRETTA LI150 SPECIAL 90.4% pass · 1,091 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.