Gas Gas Ec vs Yamaha YP250

The Yamaha YP250 passes its MOT first time more often than the Gas Gas Ec: 82.5% vs 79.0%, a 3.5-point lead.

MOT reliability, side by side

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

Metric	Gas Gas Ec	Yamaha YP250
First-time pass rate	79.0%	82.5%
Outright fail rate	11.3%	12.3%
Vs comparable bikes (age & mileage adjusted)	-8.6 pts	-2.3 pts
Engine size	250cc	249cc
Rank among all models	#3771 of 5428	#3073 of 5428
Median miles at test	1,742	15,613
MOT tests analysed	936	12,433
Most common failure	lamps and reflectors	brakes

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	Gas Gas Ec	Yamaha YP250
Steering & suspension	6.3%	5.0%
Lights & signalling	5.4%	2.5%
Tyres & wheels	4.1%	3.8%
Brakes	2.2%	5.3%
Structure & body	1.3%	0.5%
Fuel & exhaust	0.1%	0.8%
Drive system	0.1%	0.0%

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	Gas Gas Ec	Yamaha YP250
2018	77.8%	82.9%
2019	80.0%	84.2%
2020	77.2%	82.5%
2021	77.5%	84.5%
2022	74.0%	81.9%
2023	84.5%	84.4%
2024	80.0%	84.4%
2025	84.1%	85.9%

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

Gas Gas Ec vs Yamaha YP250 FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Gas Gas Ec or the Yamaha YP250?

The Yamaha YP250 passes its MOT first time more often than the Gas Gas Ec: 82.5% vs 79.0%, a 3.5-point lead. Adjusted for age, mileage and test class, the Yamaha YP250 still comes out ahead: -8.6 points vs comparable bikes for the Gas Gas Ec, -2.3 for the Yamaha YP250. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Gas Gas Ec fail its MOT on most?

Steering & suspension: 6.3% of Gas Gas Ec MOT tests failed on it, then lights & signalling (5.4%).

What does the Yamaha YP250 fail its MOT on most?

Brakes: 5.3% of Yamaha YP250 MOT tests failed on it, then steering & suspension (5.0%).

GAS GAS EC 79.0% pass · 936 tests YAMAHA YP250 82.5% pass · 12.4k tests

See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.