Head-to-head · 2005–2025
Cpi SM 50 vs Peugeot Speedfight
The Peugeot Speedfight passes its MOT first time more often than the Cpi SM 50 — 65.2% vs 52.8%, a 12.4-point lead.
MOT reliability, side by side
first-time pass rate, outright fail rate and tests analysed · 2005–2025
| Metric | Cpi SM 50 | Peugeot Speedfight |
|---|---|---|
| First-time pass rate | 52.8% | 65.2% |
| Outright fail rate | 37.7% | 26.3% |
| Median miles at test | 5,094 | 13,547 |
| MOT tests analysed | 741 | 83,728 |
| Most common failure | lighting and signalling | 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.