Head-to-head · 2005–2025
Data as of: DVSA MOT results to 2025
Yamaha WR450 vs Suzuki AN400
The Suzuki AN400 passes its MOT first time more often than the Yamaha WR450: 86.2% vs 77.2%, a 9.0-point lead.
MOT reliability, side by side
first-time pass rate, outright fail rate and tests analysed · 2005–2025
| Metric | Yamaha WR450 | Suzuki AN400 |
|---|---|---|
| First-time pass rate | 77.2% | 86.2% |
| Outright fail rate | 9.9% | 9.8% |
| Median miles at test | 2,561 | 15,861 |
| MOT tests analysed | 838 | 27,056 |
| 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.