The 2008 Mazda B2300 is available as a 2-door, 3-seat regular side. Starting at $15,535, the 2008 Mazda B2300 (M5) is powered by a 2.3L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 21-mpg in the city and 26-mpg on the highway. The top of the line 2008MazdaB2300(A5) , priced at $ 16,535 , is powered by a 2.3L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 19-mpg in the city and 24-mpg on the highway.