    the jaguar xj is the name of a series of flagship, full-size, luxury cars sold by the british automobile company, jaguar. the xj line has had a long history, with the first model released in 1968. the original model was the last jaguar saloon to have had the input of sir william lyons, the company's founder, and the model has been featured in countless media and high profile appearances. the current jaguar xj was launched in 2009. it is one of the official cars of the royal families and uk prime minister.http://www.carmagazine.co.uk/community/car-magazines-blogs/gavin-green-blog/gavin-green-rates-the-royal-wedding-cars/ ==series 1, 2 and 3 (1968â92)== ===series 1 (1968â73)===  the xj6, using 2.8&nbsp;litre () and 4.2&nbsp;litre () straight-six cylinder versions of jaguar's renowned xk engine, replaced most of jaguar's saloons â which, in the 1960s, had expanded to four separate ranges. apart from the engines, other main assemblies carried over from previous models were the widest version of jaguar's irs unit from the mark x and the subframe mounted independent front suspension first seen in the 1955 2.4 litre with revisions to the geometry. an upmarket version was marketed under the daimler brand and called the daimler sovereign, continuing the name from the daimler version of the [
1960s_automobiles 1970s_automobiles 1980s_automobiles 1990s_automobiles 2000s_automobiles 2010s_automobiles Flagship_vehicles Full-size_vehicles Jaguar_vehicles Rear-wheel-drive_vehicles Sedans Vehicles_introduced_in_1968