Daelim GZ 50 vs Peugeot Speedfight

The Daelim GZ 50 passes its MOT first time more often than the Peugeot Speedfight: 71.2% vs 65.2%, a 6.0-point lead.

MOT reliability, side by side

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

Metric	Daelim GZ 50	Peugeot Speedfight
First-time pass rate	71.2%	65.2%
Outright fail rate	21.1%	26.3%
Vs comparable bikes (age & mileage adjusted)	-3.2 pts	-5.3 pts
Engine size	49cc	49cc
Rank among all models	#4640 of 5428	#5008 of 5428
Median miles at test	6,336	13,547
MOT tests analysed	593	83,728
Most common failure	brakes	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	Daelim GZ 50	Peugeot Speedfight
Steering & suspension	11.0%	12.9%
Lights & signalling	6.7%	15.4%
Brakes	9.8%	10.8%
Tyres & wheels	2.9%	4.7%
Fuel & exhaust	2.0%	2.5%
Structure & body	1.9%	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	Daelim GZ 50	Peugeot Speedfight
2006	76.7%	68.0%
2007	72.3%	65.8%
2008	73.2%	63.7%
2009	63.5%	62.9%
2010	80.9%	62.0%
2011	79.4%	60.9%
2012	63.3%	61.2%
2014	65.6%	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	Daelim GZ 50	Peugeot Speedfight
0k-10k miles	72.8%	73.1%
10k-20k miles	68.5%	63.3%

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

Daelim GZ 50 vs Peugeot Speedfight FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Daelim GZ 50 or the Peugeot Speedfight?

The Daelim GZ 50 passes its MOT first time more often than the Peugeot Speedfight: 71.2% vs 65.2%, a 6.0-point lead. Adjusted for age, mileage and test class, the Daelim GZ 50 still comes out ahead: -3.2 points vs comparable bikes for the Daelim GZ 50, -5.3 for the Peugeot Speedfight. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Daelim GZ 50 fail its MOT on most?

Steering & suspension: 11.0% of Daelim GZ 50 MOT tests failed on it, then brakes (9.8%).

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%).

DAELIM GZ 50 71.2% pass · 593 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.