Gilera GSM vs Peugeot Speedfight

The Peugeot Speedfight passes its MOT first time more often than the Gilera GSM: 65.2% vs 53.7%, a 11.5-point lead.

MOT reliability, side by side

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

Metric	Gilera GSM	Peugeot Speedfight
First-time pass rate	53.7%	65.2%
Outright fail rate	33.0%	26.3%
Vs comparable bikes (age & mileage adjusted)	-18.1 pts	-5.3 pts
Engine size	49cc	49cc
Rank among all models	#5354 of 5428	#5008 of 5428
Median miles at test	9,708	13,547
MOT tests analysed	793	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	Gilera GSM	Peugeot Speedfight
Lights & signalling	26.1%	15.4%
Steering & suspension	17.8%	12.9%
Brakes	13.0%	10.8%
Tyres & wheels	6.8%	4.7%
Structure & body	5.5%	2.3%
Drive system	7.7%	0.0%
Fuel & exhaust	5.2%	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	Gilera GSM	Peugeot Speedfight
2006	60.3%	68.0%
2007	54.0%	65.8%
2008	53.6%	63.7%
2009	45.3%	62.9%
2010	41.7%	62.0%
2011	49.2%	60.9%
2012	54.7%	61.2%
2013	48.7%	61.2%

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	Gilera GSM	Peugeot Speedfight
0k-10k miles	58.7%	73.1%
10k-20k miles	46.0%	63.3%
20k-30k miles	57.8%	58.2%

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

Gilera GSM vs Peugeot Speedfight FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Gilera GSM or the Peugeot Speedfight?

The Peugeot Speedfight passes its MOT first time more often than the Gilera GSM: 65.2% vs 53.7%, a 11.5-point lead. Adjusted for age, mileage and test class, the Peugeot Speedfight still comes out ahead: -18.1 points vs comparable bikes for the Gilera GSM, -5.3 for the Peugeot Speedfight. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Gilera GSM fail its MOT on most?

Lights & signalling: 26.1% of Gilera GSM MOT tests failed on it, then steering & suspension (17.8%).

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%).

Which holds up better at high mileage, the Gilera GSM or the Peugeot Speedfight?

They are level: at 20k-30k miles the Gilera GSM passes 57.8% first time and the Peugeot Speedfight 58.2%.

GILERA GSM 53.7% pass · 793 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.