Considered by many as the jewel of pre-war Rolls-Royce models, the Rolls-Royce 20hp reflected no compromise in the company's high engineering standards, its o.h.v. 3,127cc engine offering smoothness, silence and performance befitting the reputation earned by the Silver Ghost. Intended for the now fashionable owner-driver, the 20hp was a great success for the company throughout the 1920s in a period of uncertainty following the Great War, some 2,940 chassis being produced from 1922-29. Modifications over the seven year production run from 1922 included the introduction of four forward speeds, right-hand gear change, and also four wheel servo brakes which were adopted from 1924.