Head-to-head · 2005–2025
Yamaha XT 660 Z Tenere vs Triumph Tiger 800
The Triumph Tiger 800 passes its MOT first time more often than the Yamaha XT 660 Z Tenere — 91.6% vs 87.4%, a 4.2-point lead.
MOT reliability, side by side
first-time pass rate, outright fail rate and tests analysed · 2005–2025
| Metric | Yamaha XT 660 Z Tenere | Triumph Tiger 800 |
|---|---|---|
| First-time pass rate | 87.4% | 91.6% |
| Outright fail rate | 6.0% | 4.8% |
| Median miles at test | 16,356 | 16,027 |
| MOT tests analysed | 5,654 | 6,797 |
| 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.
See each bike's full report — trend, mileage curve, failure breakdown and rivals — on its own page.