Docker Alpha S50 vs Piaggio Liberty 50 S (2026)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the Docker Alpha S50stacks up against the Piaggio Liberty 50 S. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | Docker Alpha S50 | Piaggio Liberty 50 S |
|---|---|---|
| Model year | 2023 | 2026 |
| Price | — | $2,799 |
| Engine | 48 cc | 49 cc |
| Horsepower | 3 hp | — |
| Seat height | — | 780 mm |
| Fuel capacity | 1.0 L | 6.0 L |
| Fuel type | petrol | petrol |
| Transmission | 4-speed | Continuously Variable (CVT) |
| Front brakes | Expanding brake (drum brake) | Hydraulic Disc |
| Rear brakes | Expanding brake (drum brake) | Drum |
| Tires | 2.50-17 / 2.75-17 | 90/80 R16 51J / 100/80 R14 54J |
Docker Alpha S50 vs Piaggio Liberty 50 S — which should you buy?
Picking between the Docker Alpha S50 and the Piaggio Liberty 50 S usually comes down to the numbers you care about most. On paper, the Docker Alpha S50 brings 3 hp, while the Piaggio Liberty 50 S counters with its own power figure.
Our spec tables above highlight the winning number on each line. For the full rider-focused reviews including real-world fuel economy, service costs and available colors, click into either bike:

