Head-to-head · 2005–2025
Bsa WM20 vs Suzuki SV650S
The Bsa WM20 passes its MOT first time more often than the Suzuki SV650S — 93.0% vs 80.6%, a 12.4-point lead.
MOT reliability, side by side
first-time pass rate, outright fail rate and tests analysed · 2005–2025
| Metric | Bsa WM20 | Suzuki SV650S |
|---|---|---|
| First-time pass rate | 93.0% | 80.6% |
| Outright fail rate | 2.2% | 11.9% |
| Median miles at test | 7,254 | 16,958 |
| MOT tests analysed | 230 | 84,632 |
| Most common failure | tyres and wheels | lighting and signalling |
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.