Appia
The V4 returned after the war with the 1953 Appia. It featured an even narrower 10° cylinder bank and just 1090 cc of displacement. An initial 38 hp (28 kW) of power grew to 43 hp (32 kW) in 1956. 48 hp (36 kW) was available in 1959.
Read more about this topic: Lancia V4 Engine