A 2.7-litre V6 diesel came along in 2006, using an engine co-developed by Jaguar's parent company Ford and PSA Peugeot-Citroen, but unless you're planning on using an XJ for high mileages ...

However, according to Classic.com, the price of a Jaguar XK120 starts at $72,222. What do you think? Would you like to own a Jaguar XK120 like Robert Mitchum's? Let us know in the comments!

A British team has crossed North America, from New York to Los Angeles, in an XF 2.2 Diesel averaging an incredible 62.9 mpg over 2,884-miles – making it the most efficient Jaguar ever created.