Bristol 400 is built by the Bristol Aeroplane Company and had been developed in conjunction with AFN Ltd of Frazer-Nash-BMW fame. The Bristol's radiator grille is similar to that of the German BMW and the engine was developed from the pre-war BMW 328. Bristol 400 underwent several changes such as a larger boot and external spare wheel mounting with fitted cover and, conventional bumpers instead of the tubular type.
Radical, wind tunnel developed streamlined full width body characterises 401, built alongside 400 from 1948. Body has "Superleggera" construction of aluminium panels on lightweight tubular frame work, and substantial flush fitting rubber mounted bumpers. Less traditional interior hints at aircraft heritage. Under the skin it is pure 400 with triple Solex carbs, 85 bhp 1971cc six cylinder engine.
