TGB R50 X vs Peugeot Speedfight

The TGB R50 X passes its MOT first time more often than the Peugeot Speedfight: 70.3% vs 65.2%, a 5.1-point lead.

MOT reliability, side by side

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

Metric	TGB R50 X	Peugeot Speedfight
First-time pass rate	70.3%	65.2%
Outright fail rate	22.9%	26.3%
Vs comparable bikes (age & mileage adjusted)	-3.6 pts	-5.3 pts
Engine size	49cc	49cc
Rank among all models	#4706 of 5428	#5008 of 5428
Median miles at test	5,739	13,547
MOT tests analysed	1,879	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	TGB R50 X	Peugeot Speedfight
Lights & signalling	8.7%	15.4%
Brakes	11.3%	10.8%
Steering & suspension	9.2%	12.9%
Tyres & wheels	4.4%	4.7%
Structure & body	2.2%	2.3%
Fuel & exhaust	0.9%	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	TGB R50 X	Peugeot Speedfight
2017	75.2%	68.5%
2018	63.5%	69.6%
2019	74.6%	68.9%
2020	73.0%	72.0%
2021	72.6%	71.0%
2022	72.2%	71.7%
2023	70.1%	71.0%
2024	86.5%	72.9%

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	TGB R50 X	Peugeot Speedfight
0k-10k miles	72.2%	73.1%
10k-20k miles	65.3%	63.3%

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

TGB R50 X vs Peugeot Speedfight FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the TGB R50 X or the Peugeot Speedfight?

The TGB R50 X passes its MOT first time more often than the Peugeot Speedfight: 70.3% vs 65.2%, a 5.1-point lead. Adjusted for age, mileage and test class, the TGB R50 X still comes out ahead: -3.6 points vs comparable bikes for the TGB R50 X, -5.3 for the Peugeot Speedfight. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the TGB R50 X fail its MOT on most?

Brakes: 11.3% of TGB R50 X MOT tests failed on it, then steering & suspension (9.2%).

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%).

TGB R50 X 70.3% pass · 1,879 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.