The 2021 Lexus GX continues to offer just one engine: a 4.6-liter V-8 that generates 301 horsepower and 329 lb-ft of torque. This powerplant is teamed with a six-speed automatic transmission and ... 2020 Lexus GX460 Numbers. BASE PRICE: $64,265 PRICE AS TESTED: $73,090 VEHICLE LAYOUT: Front-engine, all-wheel-drive, 8-passenger, 4-door SUV ENGINE: 5.6 liter DOHC 32-valve V-8 POWER: 301 hp @ 5600 rpm TORQUE: 329 lb-ft @ 3600 rpm TRANSMISSION: 6-speed automatic with manual shifting mode 0-60 MPH: 7.2 seconds CURB WEIGHT: 5,198 lb