Head-to-head · 2005–2025
Triumph Tiger 660 Sport vs Yamaha XT 660 Z Tenere
The Triumph Tiger 660 Sport passes its MOT first time more often than the Yamaha XT 660 Z Tenere — 94.1% vs 87.4%, a 6.7-point lead.
MOT reliability, side by side
first-time pass rate, outright fail rate and tests analysed · 2005–2025
| Metric | Triumph Tiger 660 Sport | Yamaha XT 660 Z Tenere |
|---|---|---|
| First-time pass rate | 94.1% | 87.4% |
| Outright fail rate | 4.1% | 6.0% |
| Median miles at test | 6,258 | 16,356 |
| MOT tests analysed | 786 | 5,654 |
| Most common failure | brakes | lamps and reflectors |
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.