ōi, Shinagawa Ward, Tokyo. )]] Isuzu Motors Ltd. , ; /ˈisʊzʊ/}} is a Japanese car, commercial vehicle and heavy truck manufacturing company, headquartered in Tokyo. Isuzu has assembly and manufacturing plants in the Japanese city of Fujisawa, as well as in the prefectures Tochigi and Hokkaidō. Isuzu is famous for producing commercial vehicles and diesel engines. By 2009, Isuzu had produced over 21 million diesel engines, which can be found in vehicles all over the world.