The 2013 Jaguar XJ is available as a 4-door, 5-seat sedan. Starting at $73,200, the 2013 Jaguar XJ Base RWD is powered by a 3.0L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 18-mpg in the city and 27-mpg on the highway. The top of the line 2013JaguarXJXJL Portfolio AWD , priced at $ 83,700 , is powered by a 3.0L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 24-mpg on the highway.