Data as of: DVSA MOT results to 2025
Beta Rev-3 vs Yamaha WR250F
The Beta Rev-3 passes its MOT first time more often than the Yamaha WR250F: 87.6% vs 78.0%, a 9.6-point lead.
MOT reliability, side by side
| Metric | Beta Rev-3 | Yamaha WR250F |
|---|---|---|
| First-time pass rate | 87.6% | 78.0% |
| Outright fail rate | 6.7% | 12.8% |
| Vs comparable bikes (age & mileage adjusted) | -1.5 pts | -10.7 pts |
| Engine size | 250cc | 249cc |
| Rank among all models | #1725 of 5428 | #3913 of 5428 |
| Median miles at test | 71 | 3,018 |
| MOT tests analysed | 718 | 10,465 |
| Most common failure | reg plates and vin | 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 Rev-3 | Yamaha WR250F |
|---|---|---|
| Lights & signalling | 2.6% | 8.2% |
| Steering & suspension | 2.9% | 5.1% |
| Tyres & wheels | 2.1% | 3.0% |
| Brakes | 0.7% | 2.2% |
| Drive system | 0.3% | 0.7% |
| Structure & body | 0.3% | 0.5% |
| 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 Rev-3 | Yamaha WR250F |
|---|---|---|
| 2010 | 87.3% | 75.3% |
| 2011 | 86.5% | 76.7% |
| 2012 | 87.5% | 76.5% |
| 2013 | 86.4% | 75.7% |
| 2014 | 84.6% | 77.9% |
| 2015 | 83.3% | 77.3% |
| 2016 | 83.3% | 78.9% |
| 2017 | 88.6% | 80.3% |
Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.
Beta Rev-3 vs Yamaha WR250F FAQ
Which is more reliable, the Beta Rev-3 or the Yamaha WR250F?
The Beta Rev-3 passes its MOT first time more often than the Yamaha WR250F: 87.6% vs 78.0%, a 9.6-point lead. Adjusted for age, mileage and test class, the Beta Rev-3 still comes out ahead: -1.5 points vs comparable bikes for the Beta Rev-3, -10.7 for the Yamaha WR250F. An MOT checks roadworthiness items, not engine or gearbox internals.
What does the Beta Rev-3 fail its MOT on most?
Steering & suspension: 2.9% of Beta Rev-3 MOT tests failed on it, then lights & signalling (2.6%).
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.