Infiniti QX56 is a full-size SUV produced by the luxury vehicle division of Japanese automaker Nissan, Infiniti. It is based on the Nissan Armada and was introduced for the 2004 model year. The QX56 is powered by a 5.6 L V8 producing 314 horsepower and is available in both rear-wheel and all-wheel-drive configurations. It is available with a range of luxury and convenience features, including heated and cooled leather seats, a DVD entertainment system, and a Bose audio system.