Isuzu has been producing 4WD utes and other 4x4 vehicles for over 50 years, and with 37 subsidiaries in 19 countries, and over 23,000 employees and sales representatives. As well as being the world's largest diesel engine manufacturer, Isuzu Motors Japan is the world's top-selling light-to-heavy truck brand. Isuzu's worldwide complete vehicle shipment volume totals more than 300,000 units per year, while Isuzu diesel engine production volume far exceeds this as an OEM to many global brands. As a diesel specialist, Isuzu supplies engines to over 120 companies across a wide range of industrial applications spanning construction machinery, freezer units, boats, special purpose vehicles, generators and energy conservation equipment. Isuzu diesels are also currently specified in certain Renault, Opel and General Motors passenger vehicles.