The 2000 Mazda B3000 is available as a 2-door, 3-seat regular side. Starting at $12,090, the 2000 Mazda B3000 SX (M5) 4x2 Regular Cab 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 2000MazdaB3000(A4) 4x4 Cab Plus 4 , priced at $ 20,410 , is powered by a 3.0L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 20-mpg on the highway.