Xinling XL 50 QTB vs Peugeot Speedfight

The Peugeot Speedfight passes its MOT first time more often than the Xinling XL 50 QTB: 65.2% vs 52.5%, a 12.7-point lead.

MOT reliability, side by side

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

Metric	Xinling XL 50 QTB	Peugeot Speedfight
First-time pass rate	52.5%	65.2%
Outright fail rate	38.0%	26.3%
Vs comparable bikes (age & mileage adjusted)	-25.3 pts	-5.3 pts
Engine size	50cc	49cc
Rank among all models	#5369 of 5428	#5008 of 5428
Median miles at test	2,974	13,547
MOT tests analysed	263	83,728
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	Xinling XL 50 QTB	Peugeot Speedfight
2009	34.0%	62.9%
2010	50.0%	62.0%
2011	53.7%	60.9%
2012	63.6%	61.2%

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

XINLING XL 50 QTB 52.5% pass · 263 tests PEUGEOT SPEEDFIGHT 65.2% pass · 83.7k tests

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