MBK Booster vs Peugeot Speedfight

The MBK Booster passes its MOT first time more often than the Peugeot Speedfight: 66.5% vs 65.2%, a 1.3-point lead.

MOT reliability, side by side

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

Metric	MBK Booster	Peugeot Speedfight
First-time pass rate	66.5%	65.2%
Outright fail rate	25.3%	26.3%
Vs comparable bikes (age & mileage adjusted)	-7.7 pts	-5.3 pts
Engine size	49cc	49cc
Rank among all models	#4940 of 5428	#5008 of 5428
Median miles at test	7,184	13,547
MOT tests analysed	890	83,728
Most common failure	steering and suspension	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	MBK Booster	Peugeot Speedfight
Lights & signalling	14.6%	15.4%
Steering & suspension	16.0%	12.9%
Brakes	5.4%	10.8%
Tyres & wheels	4.3%	4.7%
Fuel & exhaust	3.8%	2.5%
Structure & body	1.2%	2.3%

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	MBK Booster	Peugeot Speedfight
2007	65.8%	65.8%
2008	63.1%	63.7%
2009	60.5%	62.9%
2010	67.0%	62.0%
2011	63.8%	60.9%
2012	70.6%	61.2%
2013	64.4%	61.2%
2014	63.9%	61.7%

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	MBK Booster	Peugeot Speedfight
0k-10k miles	66.2%	73.1%
10k-20k miles	67.2%	63.3%

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

MBK Booster vs Peugeot Speedfight FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the MBK Booster or the Peugeot Speedfight?

The MBK Booster passes its MOT first time more often than the Peugeot Speedfight: 66.5% vs 65.2%, a 1.3-point lead. Adjusted for age, mileage and test class, the Peugeot Speedfight still comes out ahead: -7.7 points vs comparable bikes for the MBK Booster, -5.3 for the Peugeot Speedfight. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the MBK Booster fail its MOT on most?

Steering & suspension: 16.0% of MBK Booster MOT tests failed on it, then lights & signalling (14.6%).

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%).

MBK BOOSTER 66.5% pass · 890 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.