When Jaguar launched the current-generation XK in all its feline ferocity, it reportedly promised that the car would only be offered with gasoline engines. But that was a couple of years ago, around the same time that Audi began to dominate Le Mans racing with its R10 TDI, when BMW put the 3-liter turbodiesel into the 6 Series, but more importantly, before the current fuel crunch made consumers reexamine the prospect of driving a diesel sportscar.

That’s why reports now suggest that Jaguar is preparing a diesel version of the XK. Based on the 2.7-liter V6 turbodiesel used in its sedans, the XK is tipped to receive a more powerful 3-liter version with 250 hp – still short of the BMW 635d’s 290, but still capable of returning over 30 mpg with torque to spare. Whether the diesel XK would make it to the American market remains doubtful, however.