The 2007 Mazda MAZDASPEED3 is available as a 4-door, 5-seat hatchback. Starting at $24,055, the 2007 Mazda MAZDASPEED3 Grand Touring is powered by a 2.3L, 4-cylinder engine mated to a manual transmission that returns an EPA estimated 20-mpg in the city and 28-mpg on the highway. The top of the line 2007 Mazda MAZDASPEED3 Sport, priced at $22,340, is powered by a 2.3L, 4-cylinder engine mated to a manual transmission that returns an EPA estimated 20-mpg in the city and 28-mpg on the highway.