The 2009 Mazda B2300 is a 2-door, 3-seat Regular Side, available in 2 trims, ranging from the Base to the Base. Upon introduction, the $16,060 Base is equipped with a standard 2.3L, 4-cylinder, engine that achieves 21-mpg in the city and 26-mpg on the highway. a Manual transmission is standard. The $17,060 Base is equipped with a standard 2.3L, 4-cylinder, engine that achieves 19-mpg in the city and 24-mpg on the highway. an Automatic transmission is standard.