The 2017 Lexus GX 460 is available as a 4-door, 7-seat sport utility. Starting at $51,680, the 2017 Lexus GX 460 Base is powered by a 4.6L, 8-cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 18-mpg on the highway. The top of the line 2017 Lexus GX 460 Luxury, priced at $63,380, is powered by a 4.6L, 8-cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 18-mpg on the highway.