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.