Jaguar XF-R spied

The Jaguar XF-R features sports quad pipes at the rear; the ride height is noticeably lower; the mesh grille is menacingly blackened.

The R version will b unveiled at a motor show in late 2008, with sales kicking off in early ’09. It should be one of the fastest four-doors on sale, with pace to challenge the Mercedes E63, Audi RS6 and BMW M5.