The 2007 Mazda Mazda6 is available as a 4-door, 5-seat sedan. Starting at $23,940, the 2007 Mazda Mazda6 i Grand Touring (M5) Hatchback is powered by a 2.3L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 23-mpg in the city and 32-mpg on the highway. The top of the line 2007MazdaMazda6s Grand Touring (A6) Hatchback , priced at $ 27,750 , is powered by a 3.0L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 20-mpg in the city and 27-mpg on the highway.