Head-to-head · 2005–2025
Honda Z 125 Ma-K vs Yamaha YBR 125
The Honda Z 125 Ma-K passes its MOT first time more often than the Yamaha YBR 125 — 94.1% vs 71.0%, a 23.1-point lead.
MOT reliability, side by side
first-time pass rate, outright fail rate and tests analysed · 2005–2025
| Metric | Honda Z 125 Ma-K | Yamaha YBR 125 |
|---|---|---|
| First-time pass rate | 94.1% | 71.0% |
| Outright fail rate | 1.8% | 17.1% |
| Median miles at test | 1,701 | 10,652 |
| MOT tests analysed | 4,239 | 124,897 |
| Most common failure | structure and attachments | 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.
See each bike's full report — trend, mileage curve, failure breakdown and rivals — on its own page.