The 2004 Jaguar XKR is available as a 2-door, 4-seat coupe. Starting at $80,330, the 2004 Jaguar XKR Coupe is powered by a 4.2L , 8 -cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 23-mpg on the highway. The top of the line 2004JaguarXKRConvertible , priced at $ 85,330 , is powered by a 4.2L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 23-mpg on the highway.