The Nissan Diesel Quon (kana:日産ディーゼル・クオン) is a line of heavy-duty commercial vehicle produced by the Japanese manufacturer UD Trucks (previously known as Nissan Diesel) since 2007 and the other countries since 2008. The Quon as a replacement for the Big Thumb for ceased production in 1 year, and It is also available in the other big-size trucks. it is based on the Mitsubishi Fuso Super Great using the platform.
The Most big-size models of the truck where distinguishable by a front the 'Quon' badge, but the common Nissan Diesel or UD Trucks badge is usually used on the rear.
In Japan, Asia, Middle-East, African Union and South America, its principal competitors are the Isuzu Giga, and Hino Profia (known as Hino 700).
Quon engines using AdBlue Urea Selective Catalytic Reduction technology.
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. Until 2010, it was known as Nissan Diesel, the company changed its name to UD Trucks. Already before the name change, the UD name was prominently displayed to separate the identity from that of their former owner Nissan Motors.
The UD name was originally used for the company's Uniflow Diesel Engine (known as Two-stroke Engine), developed in 1955, but is now marketed as meaning "Ultimate Dependability".
On February 15, 2010 it was announced that UD Trucks had taken over the import and sales of Volvo trucks in Japan, as a consequence of Volvo's ownership.
In 1935, Nihon Diesel Industries, Ltd, in Kawaguchi, Japan on the outskirts of Tokyo was established. The company started production of KD-series 2-cycle diesel engines. In 1940 production of 4.5-ton-payload TT6 series trucks started. In development of 7.5-ton-payload TN93 series trucks, featuring the largest payload capacity in the Japanese market, and the nation's first monocoque-type BR3 series buses with rear-mounted engines. In 1949 development of 7.5-ton-payload TN93 series trucks started.