 However, the Mark V vastly outsold the XK120 by roughly 5,000 cars per year as compared to 2,000 cars per year for the XK120.Three cars were built in late 1948 and saloon production was well under way at the factory on Swallow Road at Holbrook Lane in the Foleshill district of Coventry by March 1949, though the DHC was delayed for some months, and the last cars were built in mid 1951.While the XK120 had a new overhead-camshaft XK engine, the Mark V retained the 1946-48 driveline including the overhead-valve pushrod straight-6 2½L and 3½L engines, now since 1946 produced by Jaguar, which the company had purchased from the Standard Motor Company before the Second World War and the four-speed single-helical gearbox produced by both Jaguar and the Moss Gear Company of Birmingham.