|Production||1920–1925 1800 approx produced|
|Engine||1,460 cc (89 cu in) Straight-4 Side valve|
|Transmission||3 speed, later 4 speed manual|
|Wheelbase||102 or 112 in (2,591 or 2,845 mm)|
|Length||156 in (3,962 mm)|
|Width||68 in (1,727 mm)|
Designed by T. C. Pullinger and Fred Neale from Hillman, and heavily influenced by the Fiat 501, the 10/20 used a straight four, side valve engine of 1460 cc driving the rear wheels through either a three or four speed gearbox in unit with the engine. Suspension was by semi elliptic leaf springs at the front and quarter elliptic springs at the rear.