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 2007 Mazda Mazda6 s 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.