 The XF was developed at Jaguar's Whitley design and development HQ in Whitley, Coventry and was built at Castle Bromwich Assembly facility in Birmingham.Initially, the XF was planned to use an all aluminium platform but due to time constraints put by Jaguar's board on the development team, the X250 makes use of a heavily modified Ford DEW98 platform.The XF was launched at the 2007 Frankfurt Motor Show, following the public showing of the C-XF concept in January 2007 at the North American International Auto Show.