The 2000 Mazda B2500 is available as a 2-door, 3-seat regular side. Starting at $11,795, the 2000 Mazda B2500 SX (M5) Regular Cab is powered by a 2.5L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 22-mpg in the city and 27-mpg on the highway. The top of the line 2000MazdaB2500Cab Plus , priced at $ 16,295 , is powered by a 2.5L , 4 - cylinder engine mated to a manual transmission that returns an EPA estimated 22-mpg in the city and 27-mpg on the highway.