Baotian BT 49 QT-21 Monza 50 vs Peugeot Vivacity

The Baotian BT 49 QT-21 Monza 50 passes its MOT first time more often than the Peugeot Vivacity: 74.4% vs 70.4%, a 4.0-point lead.

MOT reliability, side by side

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

Metric	Baotian BT 49 QT-21 Monza 50	Peugeot Vivacity
First-time pass rate	74.4%	70.4%
Outright fail rate	16.1%	21.7%
Vs comparable bikes (age & mileage adjusted)	-2.5 pts	-0.9 pts
Engine size	49cc	49cc
Median miles at test	3,864	11,162
MOT tests analysed	168	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.

BAOTIAN BT 49 QT-21 MONZA 50 74.4% pass · 168 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.