The 20/70 was a car produced by Crossley between 1923 and 1926. It is unknown how many were made.

The engine was a four cylinder 3708cc unit that had a long stroke (149mm). The crankshaft had three main bearings and cooling was by a pump. The cylinder head was made detachable so that decarbonation was less of a chore for the owner. The engine was connected to a four speed gearbox via a cone gearbox.

The chassis was 10ft 4in long and had semi-elliptical springs all round. Brakes were only fitted on the rear wheels as standard and four wheel brakes became optional from late 1923.

The car could reach speeds of 75mph (121kmh).

The car cost £825 in 1925.