The Infiniti QX70 (called the Infiniti FX from 2003 through 2013) is a mid-size luxury crossover SUV produced by the Nissan-owned Infiniti luxury vehicle brand since the 2003 model year. The FX replaced the QX4 as Infiniti's mid-size luxury-type SUV, although the QX4 was smaller than the FX.
The FX has been described as having the profile of a "giant scarab" or a "Bionic cheetah". Its designers sought what they called a "cool fusion" – the blending of a substantial SUV lower body with the sleek, elegant upper body more reminiscent of a classic sports car or sports GT. In addition, they sought to combine sports-car performance with SUV functionality. The FX is now in its second generation, since the 2009 model year FX35 and FX50.