| Lancia 12 HP | |
| Aka: | Lancia Zeta |
| Manufacturer: | Lancia |
| Production: | 1912–1914 |
| Layout: | Front-engine, rear-wheel-drive |
| Engine: | 2,620 cc I4 |
| Transmission: | 2-speed manual, 2 final drives |
| Wheelbase: | 2850, |
| Weight: | 7400NaN0 (chassis) |
The Lancia 12 HP, later known as Lancia Zeta, is a passenger car produced by Lancia between 1912 and 1914. It was intended to be Lancia's smaller offering, positioned below the 4-litre 20/30HP Delta and Epsilon models. The Zeta did not prove a success, and production is estimated at just 34 examples (for comparison, 351 20/30 HP Epsilons were made in 1911–1912); none have survived.
The Zeta was powered by a Tipo 59 side valve monobloc inline-four, displacing 2,620 cc, which produced 30 hp at 1,800 rpm. Top speed was 100km/h.
The separate body was built on a ladder frame; front and rear there were solid axles on semi-elliptic leaf springs. The brakes were drums on the rear wheels, with both lever and pedal actuation. The transmission was a 2-speed gearbox, which coupled to the two different sets of final drives at the rear axle effectively gave the car four speed; the clutch was of the multi-plate dry type.