The Delta was based on the earlier 20 HP Gamma, with an enlarged engine.
The latter was destined for competition-oriented Corsa models, to be bodied as open two- or three-seaters.
The Delta was powered by a Tipo 56 side valve monobloc inline-four engine with a cast iron block.
[1] Output was 60 hp (45 kW) at 1800 rpm, and the car could reach top speed of 115 km/h (71 mph).
The chassis was a conventional ladder frame, with solid axles sprung on semi-elliptic front and three-quarter-elliptic rear leaf springs.