Lambretta 150LI vs Honda PCX 125

The Lambretta 150LI passes its MOT first time more often than the Honda PCX 125: 87.5% vs 81.1%, a 6.4-point lead.

MOT reliability, side by side

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

Metric	Lambretta 150LI	Honda PCX 125
First-time pass rate	87.5%	81.1%
Outright fail rate	7.3%	12.9%
Vs comparable bikes (age & mileage adjusted)	+4.6 pts	+8.2 pts
Engine size	150cc	125cc
Rank among all models	#1750 of 5428	#3358 of 5428
Median miles at test	2,732	16,405
MOT tests analysed	806	88,608
Most common failure	steering and suspension	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 150LI	Honda PCX 125
Brakes	3.1%	6.7%
Steering & suspension	3.2%	4.4%
Lights & signalling	2.5%	3.9%
Tyres & wheels	0.9%	5.3%
Structure & body	0.5%	0.7%
Fuel & exhaust	0.1%	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 150LI	Honda PCX 125
2013	92.1%	85.2%
2014	87.3%	84.4%
2015	93.9%	83.5%
2016	87.7%	82.5%
2017	86.3%	80.5%
2018	91.9%	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 150LI	Honda PCX 125
0k-10k miles	88.4%	88.4%
10k-20k miles	86.0%	79.3%
20k-30k miles	90.8%	78.0%
30k-40k miles	83.7%	77.0%
40k-50k miles	78.1%	74.8%

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

Lambretta 150LI vs Honda PCX 125 FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Lambretta 150LI or the Honda PCX 125?

The Lambretta 150LI passes its MOT first time more often than the Honda PCX 125: 87.5% vs 81.1%, a 6.4-point lead. Adjusted for age, mileage and test class, the Honda PCX 125 still comes out ahead: +4.6 points vs comparable bikes for the Lambretta 150LI, +8.2 for the Honda PCX 125. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Lambretta 150LI fail its MOT on most?

Steering & suspension: 3.2% of Lambretta 150LI MOT tests failed on it, then brakes (3.1%).

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 150LI or the Honda PCX 125?

At 40k-50k miles the Lambretta 150LI passes first time more often: 78.1% for the Lambretta 150LI vs 74.8% for the Honda PCX 125.

LAMBRETTA 150LI 87.5% pass · 806 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.