Isuzu Motors Ltd. (いすゞ自動車株式会社 Isuzu Jidōsha Kabushiki-Kaisha^?), (TYO: 7202) is a Japanese car, commercial vehicle and heavy truck manufacturingcompany, headquartered in Tokyo. In 2005, Isuzu became the world's largest manufacturer of medium to heavy duty trucks.^{[citation needed]} It 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 anddiesel engines. By 2009, Isuzu had produced over 21 million diesel engines, which can be found in vehicles all over the world. Isuzu diesel engines are used byRenault, Opel and General Motors.