Standard Vanguards were available with a diesel option for the Phase II from 1954, and the sedan was Britain's first diesel car. The 2092cc 4-cylinder OHV diesel engine in these old work-horses was closely related to that which saw service in the Massey Fergusson tractors of that time. I'm not certain about the pickup, but the diesel sedans had the option of an electrical overdrive on second and top (three-speed manual gearboxes - column shift - were considered sufficient for a car this size back then). Although 50mpg was in reach, the diesel Mudguard struggled to get past 60mph. Incidentally, of the 1,973 diesels produced in 1954 and 1955, a large number went to Wales, where the Port Talbot steelworks ran a large fleet of them.