BIKERELIABILITY Reg check
Head-to-head · 2005–2025

Data as of: DVSA MOT results to 2025

Lambretta LI125 Special vs Yamaha Nmax 125

The Lambretta LI125 Special passes its MOT first time more often than the Yamaha Nmax 125: 89.9% vs 82.2%, a 7.7-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025
Metric Lambretta LI125 Special Yamaha Nmax 125
First-time pass rate 89.9% 82.2%
Outright fail rate 5.2% 11.4%
Engine size 125cc 125cc
Rank among all models #988 of 5428 #3145 of 5428
Median miles at test 1,391 30,236
MOT tests analysed 813 33,779
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.

What fails, side by side

share of each bike's MOT tests that failed on the component · lower is better
Component Lambretta LI125 Special Yamaha Nmax 125
Brakes 2.5% 5.3%
Lights & signalling 2.3% 4.2%
Steering & suspension 1.4% 5.0%
Tyres & wheels 0.6% 3.7%
Structure & body 0% 0.6%
Fuel & exhaust 0.2% 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 mileage

first-time MOT pass rate by miles on the clock at test
Mileage Lambretta LI125 Special Yamaha Nmax 125
0k-10k miles 89.7% 90.9%
10k-20k miles 92.1% 84.2%
20k-30k miles 89.1% 81.9%
30k-40k miles 90.5% 79.2%

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

Lambretta LI125 Special vs Yamaha Nmax 125 FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Lambretta LI125 Special or the Yamaha Nmax 125?

The Lambretta LI125 Special passes its MOT first time more often than the Yamaha Nmax 125: 89.9% vs 82.2%, a 7.7-point lead. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Lambretta LI125 Special fail its MOT on most?

Brakes: 2.5% of Lambretta LI125 Special MOT tests failed on it, then lights & signalling (2.3%).

What does the Yamaha Nmax 125 fail its MOT on most?

Brakes: 5.3% of Yamaha Nmax 125 MOT tests failed on it, then steering & suspension (5.0%).

Which holds up better at high mileage, the Lambretta LI125 Special or the Yamaha Nmax 125?

At 30k-40k miles the Lambretta LI125 Special passes first time more often: 90.5% for the Lambretta LI125 Special vs 79.2% for the Yamaha Nmax 125.

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