Head-to-head · 2005–2025
Sachs XTC Supersport vs Yamaha YZF-R125
The Yamaha YZF-R125 passes its MOT first time more often than the Sachs XTC Supersport — 68.0% vs 58.4%, a 9.6-point lead.
MOT reliability, side by side
first-time pass rate, outright fail rate and tests analysed · 2005–2025
| Metric | Sachs XTC Supersport | Yamaha YZF-R125 |
|---|---|---|
| First-time pass rate | 58.4% | 68.0% |
| Outright fail rate | 32.5% | 21.6% |
| Median miles at test | 13,209 | 13,002 |
| MOT tests analysed | 1,734 | 63,719 |
| 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.
See each bike's full report — trend, mileage curve, failure breakdown and rivals — on its own page.