Sukida SK 50 QT vs Peugeot Speedfight

The Peugeot Speedfight passes its MOT first time more often than the Sukida SK 50 QT: 65.2% vs 64.1%, a 1.1-point lead.

MOT reliability, side by side

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

Metric	Sukida SK 50 QT	Peugeot Speedfight
First-time pass rate	64.1%	65.2%
Outright fail rate	25.2%	26.3%
Vs comparable bikes (age & mileage adjusted)	-12.1 pts	-5.3 pts
Engine size	50cc	49cc
Rank among all models	#5054 of 5428	#5008 of 5428
Median miles at test	3,891	13,547
MOT tests analysed	591	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.

What fails, side by side

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

Component	Sukida SK 50 QT	Peugeot Speedfight
Lights & signalling	17.9%	15.4%
Brakes	12.2%	10.8%
Steering & suspension	10.0%	12.9%
Tyres & wheels	3.0%	4.7%
Structure & body	2.0%	2.3%
Fuel & exhaust	1.7%	2.5%

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	Sukida SK 50 QT	Peugeot Speedfight
2009	57.4%	62.9%
2010	64.8%	62.0%
2011	60.7%	60.9%
2012	58.4%	61.2%
2013	71.0%	61.2%
2014	64.1%	61.7%
2015	70.6%	64.4%

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

Pass rate by mileage

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

Mileage	Sukida SK 50 QT	Peugeot Speedfight
0k-10k miles	64.5%	73.1%
10k-20k miles	60.0%	63.3%

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

Sukida SK 50 QT vs Peugeot Speedfight FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Sukida SK 50 QT or the Peugeot Speedfight?

The Peugeot Speedfight passes its MOT first time more often than the Sukida SK 50 QT: 65.2% vs 64.1%, a 1.1-point lead. Adjusted for age, mileage and test class, the Peugeot Speedfight still comes out ahead: -12.1 points vs comparable bikes for the Sukida SK 50 QT, -5.3 for the Peugeot Speedfight. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Sukida SK 50 QT fail its MOT on most?

Lights & signalling: 17.9% of Sukida SK 50 QT MOT tests failed on it, then brakes (12.2%).

What does the Peugeot Speedfight fail its MOT on most?

Lights & signalling: 15.4% of Peugeot Speedfight MOT tests failed on it, then steering & suspension (12.9%).

SUKIDA SK 50 QT 64.1% pass · 591 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.