Data as of: DVSA MOT results to 2025
Honda Z 125 Ma-N vs Yamaha YBR 125
The Honda Z 125 Ma-N passes its MOT first time more often than the Yamaha YBR 125: 94.2% vs 71.0%, a 23.2-point lead.
MOT reliability, side by side
| Metric | Honda Z 125 Ma-N | Yamaha YBR 125 |
|---|---|---|
| First-time pass rate | 94.2% | 71.0% |
| Outright fail rate | 1.8% | 17.1% |
| Vs comparable bikes (age & mileage adjusted) | +14.3 pts | -1.1 pts |
| Engine size | 124cc | 124cc |
| Rank among all models | #143 of 5428 | #4664 of 5428 |
| Median miles at test | 1,660 | 10,652 |
| MOT tests analysed | 660 | 124,897 |
| 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
| Component | Honda Z 125 Ma-N | Yamaha YBR 125 |
|---|---|---|
| Lights & signalling | 0.8% | 8.5% |
| Steering & suspension | 0% | 6.5% |
| Brakes | 0% | 5.9% |
| Tyres & wheels | 0.6% | 4.4% |
| Structure & body | 0.8% | 3.8% |
| Drive system | 0% | 2.9% |
| Fuel & exhaust | 0% | 0.6% |
A test that fails on two components counts once in each. Component links go to the bikes most likely to fail on it.
Honda Z 125 Ma-N vs Yamaha YBR 125 FAQ
Which is more reliable, the Honda Z 125 Ma-N or the Yamaha YBR 125?
The Honda Z 125 Ma-N passes its MOT first time more often than the Yamaha YBR 125: 94.2% vs 71.0%, a 23.2-point lead. Adjusted for age, mileage and test class, the Honda Z 125 Ma-N still comes out ahead: +14.3 points vs comparable bikes for the Honda Z 125 Ma-N, -1.1 for the Yamaha YBR 125. An MOT checks roadworthiness items, not engine or gearbox internals.
What does the Honda Z 125 Ma-N fail its MOT on most?
Lights & signalling: 0.8% of Honda Z 125 Ma-N MOT tests failed on it, then structure & body (0.8%).
What does the Yamaha YBR 125 fail its MOT on most?
Lights & signalling: 8.5% of Yamaha YBR 125 MOT tests failed on it, then steering & suspension (6.5%).
See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.