Baotian BT 50 QT-11 vs Peugeot Vivacity

The Peugeot Vivacity passes its MOT first time more often than the Baotian BT 50 QT-11: 70.4% vs 64.2%, a 6.2-point lead.

MOT reliability, side by side

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

Metric	Baotian BT 50 QT-11	Peugeot Vivacity
First-time pass rate	64.2%	70.4%
Outright fail rate	26.8%	21.7%
Vs comparable bikes (age & mileage adjusted)	-13.8 pts	-0.9 pts
Engine size	50cc	49cc
Rank among all models	#5049 of 5428	#4699 of 5428
Median miles at test	2,744	11,162
MOT tests analysed	653	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.

What fails, side by side

share of each bike's MOT tests that failed on the component · lower is better

Component	Baotian BT 50 QT-11	Peugeot Vivacity
Lights & signalling	17.0%	11.5%
Steering & suspension	11.9%	10.5%
Brakes	9.6%	8.6%
Tyres & wheels	6.6%	4.4%
Structure & body	2.0%	1.6%
Fuel & exhaust	1.5%	1.9%

A test that fails on two components counts once in each. Component links go to the bikes most likely to fail on it.

Pass rate by test year

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

Test year	Baotian BT 50 QT-11	Peugeot Vivacity
2008	67.4%	72.3%
2009	65.6%	69.7%
2010	59.0%	69.9%
2011	64.0%	67.2%
2012	56.4%	66.2%
2013	66.7%	68.2%
2014	64.5%	66.3%
2015	61.3%	68.7%

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

Baotian BT 50 QT-11 vs Peugeot Vivacity FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Baotian BT 50 QT-11 or the Peugeot Vivacity?

The Peugeot Vivacity passes its MOT first time more often than the Baotian BT 50 QT-11: 70.4% vs 64.2%, a 6.2-point lead. Adjusted for age, mileage and test class, the Peugeot Vivacity still comes out ahead: -13.8 points vs comparable bikes for the Baotian BT 50 QT-11, -0.9 for the Peugeot Vivacity. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Baotian BT 50 QT-11 fail its MOT on most?

Lights & signalling: 17.0% of Baotian BT 50 QT-11 MOT tests failed on it, then steering & suspension (11.9%).

What does the Peugeot Vivacity fail its MOT on most?

Lights & signalling: 11.5% of Peugeot Vivacity MOT tests failed on it, then steering & suspension (10.5%).

BAOTIAN BT 50 QT-11 64.2% pass · 653 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.