The 2006 Mazda RX-8 is available as a 4-door, 4-seat coupe. Starting at $26,435, the 2006 Mazda RX-8 6 Speed Manual (M6) is powered by a 1.3L, 0-cylinder engine mated to a manual transmission that returns an EPA estimated 18-mpg in the city and 24-mpg on the highway. The top of the line 2006 Mazda RX-8 6-Speed Sport Automatic (A6), priced at $26,435, is powered by a 1.3L, 0-cylinder engine mated to an automatic transmission that returns an EPA estimated 18-mpg in the city and 25-mpg on the highway.