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 2004 Jaguar XKR Convertible, 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.