The Lexus GX (Japanese: レクサス・GX, Rekusasu GX) is a full-size luxury SUV sold in North American and Eurasian markets by Lexus, a luxury division of Toyota. The name GX stands for Grand Crossover. ... The firm next introduced the second generation model in 2009, badged GX 460 to reflect the switch to a 4.6-liter V8 engine.