Isuzu cars are created by Isuzu Motors Ltd. with its headquarters located in Tokyo, Japan. In the year 2005, the company became the largest manufacturer of heavy duty and medium trucks all over the world. It also produces diesel engines used by other car brands such as General Motors, Opel, and Renault. As of 2009, Isuzu was able to produce 21 million diesel engines for its own vehicles as well as for other car brands produced worldwide.