Alfa 15 HP Alfa 15 HP)
| Alfa 15 HP | |
| Engine | In-line four-cylinder |
| Displacement | 2413 cm³ |
| Bore * stroke | 80 * 120 mm |
| Engine control | SV |
| Power | 16 kW (22 HP) |
| Nominal rotation speed | 2100 rpm |
| Transmission | Four-speed |
| Suspension f/r | Rigid axles, leaf springs |
| Wheelbase | 2900 mm |
| Length | 3783 mm |
| Weight | Approx. 920 kg + driver |
| Maximum speed | Approx. 90 km/h |
| Designer | Giuseppe Merosi |
| Construction period | 1911 |
The first Grand-Tourismo Alfa, not just smaller in terms of cubic capacity, but also in length and wheel base, and probably cheaper than the 24 HP. Economically, the times were bad just before World War I, and Alfa tried to recapture acceptance.