The 2005 Mazda B3000 is available as a 4-door, 5-seat regular side. Starting at $18,890, the 2005 Mazda B3000 Base (M5) Cab Plus 4 is powered by a 3.0L , 6 -cylinder engine mated to a manual transmission that returns an EPA estimated 18-mpg in the city and 23-mpg on the highway. The top of the line 2005MazdaB3000DS (A5) Cab Plus 4 , priced at $ 22,280 , is powered by a 3.0L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 18-mpg in the city and 22-mpg on the highway.