The 2016 Mazda Mazda6 is available as a 4-door, 5-seat sedan. Starting at $21,495, the 2016 Mazda Mazda6 Sport (M6) is powered by a 2.5L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 25-mpg in the city and 37-mpg on the highway. The top of the line 2016MazdaMazda6Grand Touring (A6) , priced at $ 30,195 , is powered by a 2.5L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 26-mpg in the city and 38-mpg on the highway.