LAMBRETTA LI150S

150cc Petrol Class 1

#1369 of 5426 overall #23 of 49 LAMBRETTAs #53 of 412 scooter bikes

88.7%

first-time pass rate

3.7%

failed outright

3,053

median miles at test

520

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2008–2017

The LI150S's first-time pass rate has risen 11.5 points since 2008, 83.3% to 94.8%.

Pass rate by mileage

how the LI150S's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage LI150S passes first time 89.0% of the time; by 30k that's 83.1%.

First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.

What fails on a LI150S

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
brakes	13	32.5	0.4×
lighting and signalling	11	27.5	0.4×
steering and suspension	6	15	0.2×
tyres and wheels	5	12.5	0.4×
reg plates and vin	2	5	0.3×
body and structure	2	5	0.4×
tyres	1	2.5	0.3×

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the LI150S beats 4 of its 4 closest rivals (PIAGGIO VESPA, HONDA PCX 125, HONDA Vision 110).

PIAGGIO VESPA 80.7% pass · 287k tests HONDA PCX 125 81.1% pass · 88.6k tests HONDA Vision 110 78.2% pass · 50.6k tests YAMAHA NMAX 125 82.2% pass · 33.8k tests

Rivals share this bike's type and sit within ±30% of its engine capacity, ≥ 5,000 tests. Card colour = better/worse first-time pass rate than the LI150S.

Pass rate by registration year

how each model-year cohort fares · registration year from first use date

Best year to buy used: 1964 (91.6% pass). Weakest: 1963 (84.9%).

First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.

LAMBRETTA LI150S FAQ

answers computed from the data above · terms in the glossary

Is the LAMBRETTA LI150S reliable?

The LAMBRETTA LI150S is more reliable than average for its class: 88.7% of its 520 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #1369 of 5426 models.

What does a LI150S fail its MOT on most?

brakes — 32% of all defects recorded against failed LI150S tests.

What is the best year of LI150S to buy used?

By first-time pass rate, 1964-registered examples do best (91.6%) and 1963 worst (84.9%). Condition and history still trump the year.

How many miles will a LI150S last?

The median LI150S shows 3,053 miles at test, and examples around 30k miles still pass 83.1% of the time — mileage alone rarely kills one.