The Lexus RX is a mid-size luxury crossover SUV sold since 1998 by Lexus, the luxury division of Toyota. Originally released in its home market of Japan in late 1997 as the Toyota Harrier, export sales began in March 1998 as the Lexus RX. Three generations of the Lexus RX have been produced to date, the first being compact in size, and the latter two classified as mid-size. Both front- and four-wheel drive configurations have been used on the RX series, and several gasoline powertrain options, including V6 engines and hybrid systems, have been offered. In the Lexus model lineup, the RX sits below the larger GX and LX body-on-frame SUVs, and above the smaller NX crossover. The RX name stands for Radiant Crossover. It has also been labelled as “Recreation Cross Country” in some markets.