Data as of: DVSA MOT results to 2025
Gas Gas Ec 300 vs Yamaha YP250
The Yamaha YP250 passes its MOT first time more often than the Gas Gas Ec 300: 82.5% vs 78.8%, a 3.7-point lead.
MOT reliability, side by side
| Metric | Gas Gas Ec 300 | Yamaha YP250 |
|---|---|---|
| First-time pass rate | 78.8% | 82.5% |
| Outright fail rate | 12.2% | 12.3% |
| Vs comparable bikes (age & mileage adjusted) | -10.3 pts | -2.3 pts |
| Engine size | 299cc | 249cc |
| Rank among all models | #3805 of 5428 | #3073 of 5428 |
| Median miles at test | 1,372 | 15,613 |
| MOT tests analysed | 2,832 | 12,433 |
| Most common failure | lighting and signalling | 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
| Component | Gas Gas Ec 300 | Yamaha YP250 |
|---|---|---|
| Steering & suspension | 6.0% | 5.0% |
| Lights & signalling | 6.7% | 2.5% |
| Brakes | 2.5% | 5.3% |
| Tyres & wheels | 3.6% | 3.8% |
| Fuel & exhaust | 0.5% | 0.8% |
| Structure & body | 0.6% | 0.5% |
| Drive system | 0.9% | 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
| Test year | Gas Gas Ec 300 | Yamaha YP250 |
|---|---|---|
| 2018 | 71.8% | 82.9% |
| 2019 | 79.0% | 84.2% |
| 2020 | 78.1% | 82.5% |
| 2021 | 81.0% | 84.5% |
| 2022 | 83.3% | 81.9% |
| 2023 | 83.3% | 84.4% |
| 2024 | 84.7% | 84.4% |
| 2025 | 82.1% | 85.9% |
Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.
Gas Gas Ec 300 vs Yamaha YP250 FAQ
Which is more reliable, the Gas Gas Ec 300 or the Yamaha YP250?
The Yamaha YP250 passes its MOT first time more often than the Gas Gas Ec 300: 82.5% vs 78.8%, a 3.7-point lead. Adjusted for age, mileage and test class, the Yamaha YP250 still comes out ahead: -10.3 points vs comparable bikes for the Gas Gas Ec 300, -2.3 for the Yamaha YP250. An MOT checks roadworthiness items, not engine or gearbox internals.
What does the Gas Gas Ec 300 fail its MOT on most?
Lights & signalling: 6.7% of Gas Gas Ec 300 MOT tests failed on it, then steering & suspension (6.0%).
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%).
See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.