JM Star Madness vs Peugeot Vivacity

The Peugeot Vivacity passes its MOT first time more often than the JM Star Madness: 70.4% vs 53.7%, a 16.7-point lead.

MOT reliability, side by side

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

Metric	JM Star Madness	Peugeot Vivacity
First-time pass rate	53.7%	70.4%
Outright fail rate	38.2%	21.7%
Vs comparable bikes (age & mileage adjusted)	-20.0 pts	-0.9 pts
Engine size	50cc	49cc
Median miles at test	6,479	11,162
MOT tests analysed	123	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 mileage

first-time MOT pass rate by miles on the clock at test

Mileage	JM Star Madness	Peugeot Vivacity
0k-10k miles	60.9%	76.6%
10k-20k miles	32.3%	67.9%

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

JM STAR MADNESS 53.7% pass · 123 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.