Isuzu Motors Ltd. (いすゞ自動車株式会社 Isuzu Jidōsha Kabushiki-Kaisha) (TYO: 7202), trading as Isuzu (Japanese pronunciation: [isuzu], /iˈsuːzuː/), is a Japanese commercial vehicles and diesel engine manufacturing company headquartered in Tokyo. Its principal activity is the production, marketing and sale of Isuzu 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. Isuzu diesel engines are used by dozens of manufacturers, to include Ford Motor Company and Renault-Nissan Alliance.