Skyteam ST 50-3 SM vs Peugeot Vivacity

The Peugeot Vivacity passes its MOT first time more often than the Skyteam ST 50-3 SM: 70.4% vs 52.1%, a 18.3-point lead.

MOT reliability, side by side

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

Metric	Skyteam ST 50-3 SM	Peugeot Vivacity
First-time pass rate	52.1%	70.4%
Outright fail rate	37.7%	21.7%
Vs comparable bikes (age & mileage adjusted)	-24.8 pts	-0.9 pts
Engine size	49cc	49cc
Rank among all models	#5379 of 5428	#4699 of 5428
Median miles at test	4,436	11,162
MOT tests analysed	236	29,731
Most common failure	lighting and signalling	lighting and signalling

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.

Pass rate by test year

first-time MOT pass rate in each calendar year both bikes were tested

Test year	Skyteam ST 50-3 SM	Peugeot Vivacity
2012	43.9%	66.2%
2013	48.9%	68.2%
2014	55.0%	66.3%

Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.

SKYTEAM ST 50-3 SM 52.1% pass · 236 tests PEUGEOT VIVACITY 70.4% pass · 29.7k tests

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