Miyoshi Plant is an automobile engine manufacturing complex in Miyoshi, Hiroshima, Japan operated by Mazda Motor Corporation. The complex produces piston engines and opened in May, 1974. It includes 1.667 million square meters of space. The plant builds Mazda's F and J engines. See also List of Mazda facilities External links Mazda Factory locations Japan Mazda factories Motor vehicle assembly plants in Japan Buildings and structures in Hiroshima Prefecture