Isuzu Motors was established in 1916 in Japan and is one of the world's leading manufacturers of commercial trucks and diesel engines. The brand entered a partnership with General Motors that lasted several decades, producing vehicles under various badges before separating. Isuzu is the only major automaker in Southeast Asia that focuses exclusively on diesel-powered vehicles, giving it a distinct engineering identity. Its Thailand plant is one of the company's largest global production bases and has produced over five million cumulative units, serving both domestic sales and ASEAN exports.