The 2005 Mazda B2300 is available as a 2-door, 3-seat regular side. Starting at $15,340, the 2005 Mazda B2300 (M5) is powered by a 2.3L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 24-mpg in the city and 29-mpg on the highway. The top of the line 2005MazdaB2300(A5) , priced at $ 16,340 , is powered by a 2.3L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 22-mpg in the city and 26-mpg on the highway.