BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025
88.7%
first-time pass rate
5.5%
failed outright
2,919
median miles at test
1,580
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2018

The SX's first-time pass rate has risen 2.8 points since 2006, 90.7% to 93.5%.

79%89%99%2006: 90.7% pass (75 tests)2007: 91.1% pass (90 tests)2008: 86.6% pass (97 tests)2009: 86.4% pass (110 tests)2010: 83.3% pass (120 tests)2011: 86.8% pass (121 tests)2012: 82.3% pass (141 tests)2013: 90.3% pass (144 tests)2014: 88.2% pass (144 tests)2015: 87.9% pass (141 tests)2016: 95.4% pass (131 tests)2017: 92.1% pass (126 tests)2018: 93.5% pass (46 tests)20062018

Pass rate by mileage

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

A low-mileage SX passes first time 89.0% of the time; by 30k that's 89.4%.

87%88%90%0k: 89.0% pass (1,090 tests)10k: 87.4% pass (206 tests)20k: 88.2% pass (153 tests)30k: 89.4% pass (66 tests)0k20k30k

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 SX

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
56 35.9 0.6×
brakes
37 23.7 0.4×
steering and suspension
24 15.4 0.5×
tyres and wheels
20 12.8 0.5×
fuel and exhaust
7 4.5 0.6×
reg plates and vin
4 2.6 0.4×
body and structure
3 1.9 0.3×
steering
2 1.3 0.3×
lamps and reflectors
2 1.3
Items Not Tested
1 0.6 0.7×

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 SX beats 3 of its 4 closest rivals (PIAGGIO PX 200 E, PIAGGIO X9, LAMBRETTA GP200).

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 SX.

Pass rate by registration year

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

Best year to buy used: 1980 (91.3% pass). Weakest: 1966 (86.3%).

85%89%92%1966: 86.3% pass (322 tests)1967: 89.5% pass (390 tests)1968: 90.1% pass (383 tests)1969: 88.2% pass (85 tests)1980: 91.3% pass (69 tests)196619681980

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 SX FAQ

answers computed from the data above · terms in the glossary

Is the LAMBRETTA SX reliable?

The LAMBRETTA SX is more reliable than average for its class: 88.7% of its 1,580 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #1369 of 5426 models.

What does a SX fail its MOT on most?

lighting and signalling — 36% of all defects recorded against failed SX tests.

What is the best year of SX to buy used?

By first-time pass rate, 1980-registered examples do best (91.3%) and 1966 worst (86.3%). Condition and history still trump the year.

How many miles will a SX last?

The median SX shows 2,919 miles at test, and examples around 30k miles still pass 89.4% of the time — mileage alone rarely kills one.