The 2011 Mazda Mazda3 is available as a 4-door, 5-seat sedan. Starting at $15,800, the 2011 Mazda Mazda3 i SV (M5) Sedan is powered by a 2.0L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 25-mpg in the city and 33-mpg on the highway. The top of the line 2011MazdaMazda3Grand Touring (A5) Hatchback , priced at $ 23,810 , is powered by a 2.5L , 4 - cylinder engine that returns an EPA estimated 22-mpg in the city and 29-mpg on the highway.