The UD Quon (kana:UD・クオン) is a heavy-duty commercial vehicle produced by the Japanese manufacturer UD Trucks, a former division of AB Volvo (now Isuzu). Quon was originally developed by Nissan Diesel Corporation with the world first implementation of Selective catalytic reduction (SCR) system to automobile. History First Generation (2004-2017) Quon was released on November 18, 2004 in Japan, as the successor of BigThumb. It is said that it was named for the term "" with the same pronunciation, meaning "timeline forever" or "permanent". Not only equipped with SCR system, Quon was the world's first truck which has SRS knee airbag as standard equipment. Second generation (2017- ) The second generation Quon was released in 2017. It has improved drivability with a new 11-litre GH11 (based on Volvo D11) and 8-litre GH8 (based on Volvo D8) diesel engine. Awards 2005: (Techinology Development Award) from JSAE Line up CK 4x2 CD 6x2R CV 6x2F CW 6x4 CX 6x4 (low floor variant) CG 8x4 CF 4x4 CZ 6x6 GK 4x2 GW 6x4 CV-P 6x2 CW-P 6x4 Engine Quon engines using AdBlue Urea Selective Catalytic Reduction technology. MD92-TB Straight-6 OHC 9.203 cc 340HP MD92-TC Straight-6 OHC 370HP GH8 Straight-6 OHC 7.700cc 280HP GH11-TA Straight-6 OHC 10.836 cc 350HP GH11-TB Straight-6 OHC 380HP GH11-TC Straight-6 OHC 410HP GE13-TB Straight-6 OHC 13.074 cc 380HP GE13-TC Straight-6 OHC 410HP GE13-TD Straight-6 OHC 440HP GE13-TF Straight-6 OHC 520HP See also UD Selective catalytic reduction (SCR) External links official References Cab over vehicles Quon UD trucks Vehicles introduced in 2004