The Mazda B series is a series of pickup trucks that was manufactured by Mazda. Produced across five generations from 1961 to 2006, the model line began life primarily as a commercial vehicle, slotted above a kei truck in size. Through its production, Mazda used engine displacement to determine model designations; a B1500 was fitted with a 1.5 L engine and a B2600, a 2.6 L engine. In 2006, the Mazda B-Series was replaced by the Mazda BT-50.