Background
A sportscar that could top 100mph was still a novelty in the late 1940s, one that could add another 25mph on top of that, was almost unheard of. Despite this, Jaguar thought that its new for 1949 XK120 would have only limited appeal in a cash-strapped post-WW2 Europe. What Jaguar hadn’t fully anticipated was the enormous demand for British sportscars in the USA. Returning GIs had stories to tell about the plucky little open-top, two-seaters they’d had a taste of in the lead up to the invasion of Europe. Word of mouth spread fast. Early XK120s were produced surplus aircraft aluminium but as sales, and therefore production really took off, bodywork shifted to steel from 1950. The XK120 would be replaced by the XK140 in 1954.
The centrepiece of this revolutionary new series of Jaguar sports cars, and what leant the model its designation, was the powerful new XK engine. With twin-overhead camshafts and hemispherical combustion chambers, this motor was well ahead of the curve. In fact, it was the first mass-produced powerplant to combine these high-efficiency features. With a displacement of 3.4-litres the XK engine initially developed a roaring 160bhp (climbing to 220bhp in Le Mans tune). All of this performance could be yours for a relatively modest £1263 (roughly £35k today). Once sales took off, Jaguar realised it had undersold its new hit, so from 1953 hiked the price to over £1600.







