Alvis' entry into car manufacture came with the 10/30 in 1920. This was a high quality light car with a four-cylinder fixed head monobloc side valve engine of 65 x 110 mm, 1460 cc. A three bearing crankshaft was used, carried in an aluminium crankcase bolted to the cast iron block, with a separate four-speed right hand change gearbox, at a time when these features were unusual in light cars. All of the mechanical parts were of Alvis design and manufacture. Wheelbase was 9'2" and steel artillery wheels were standard. Maximum speed was some 60 mph.