Data as of: DVSA MOT results to 2025
Beta Xtrainer vs Yamaha WR250F
The Beta Xtrainer passes its MOT first time more often than the Yamaha WR250F: 81.2% vs 78.0%, a 3.2-point lead.
MOT reliability, side by side
| Metric | Beta Xtrainer | Yamaha WR250F |
|---|---|---|
| First-time pass rate | 81.2% | 78.0% |
| Outright fail rate | 10.2% | 12.8% |
| Vs comparable bikes (age & mileage adjusted) | -9.3 pts | -10.7 pts |
| Engine size | 293cc | 249cc |
| Rank among all models | #3336 of 5428 | #3913 of 5428 |
| Median miles at test | 1,725 | 3,018 |
| MOT tests analysed | 1,959 | 10,465 |
| Most common failure | lamps and reflectors | 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
| Component | Beta Xtrainer | Yamaha WR250F |
|---|---|---|
| Lights & signalling | 5.8% | 8.2% |
| Steering & suspension | 4.0% | 5.1% |
| Tyres & wheels | 2.3% | 3.0% |
| Brakes | 1.5% | 2.2% |
| Structure & body | 1.0% | 0.5% |
| Drive system | 0% | 0.7% |
| Fuel & exhaust | 0% | 0.4% |
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 | Beta Xtrainer | Yamaha WR250F |
|---|---|---|
| 2019 | 79.5% | 77.2% |
| 2020 | 82.6% | 82.5% |
| 2021 | 76.7% | 80.4% |
| 2022 | 78.8% | 76.2% |
| 2023 | 82.0% | 82.1% |
| 2024 | 81.3% | 80.2% |
| 2025 | 84.4% | 81.6% |
Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.
Beta Xtrainer vs Yamaha WR250F FAQ
Which is more reliable, the Beta Xtrainer or the Yamaha WR250F?
The Beta Xtrainer passes its MOT first time more often than the Yamaha WR250F: 81.2% vs 78.0%, a 3.2-point lead. Adjusted for age, mileage and test class, the Beta Xtrainer still comes out ahead: -9.3 points vs comparable bikes for the Beta Xtrainer, -10.7 for the Yamaha WR250F. An MOT checks roadworthiness items, not engine or gearbox internals.
What does the Beta Xtrainer fail its MOT on most?
Lights & signalling: 5.8% of Beta Xtrainer MOT tests failed on it, then steering & suspension (4.0%).
What does the Yamaha WR250F fail its MOT on most?
Lights & signalling: 8.2% of Yamaha WR250F MOT tests failed on it, then steering & suspension (5.1%).
See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.