||This article does not cite any sources. (December 2009)
Mazda's first automobile engine was the V-twin family. This tiny air-cooled engine only lasted a few years in the early 1960s before Mazda moved to the more common inline-four format used in most modern automobiles.
The first automobile engine from Mazda was the 356 cc (60x63 mm) air-cooled 90° V-twin. It was an overhead valve 4-valve pushrod design. This engine produced 16 hp (11.9 kW) and 16 lb·ft (22 Nm) in the 1960 Mazda R360.
The engine was enlarged to 577 cc for the 1961 B600.