"Nissan Diesel" redirects here; not to be confused with the Dongfeng Nissan-Diesel Company.UD Trucks Corporation (UDトラックス株式会社, UD Torakkusu Kabushikigaisha) is a Japanese company whose principal business is the manufacture and sales of light, medium and heavy duty diesel trucks, buses, bus chassis and special-purpose vehicles. Its headquarters is located in Ageo, Saitama, Japan. The company is owned 100% by the Volvo Group since 2007.