The Lexus LX is a luxury full-size SUV that seats five people in its standard two-row form; an available third-row seat ups seating capacity to seven.In place of the LX 570’s 383-horsepower, 5.7-liter V-8 is a 409-hp, twin-turbocharged 3.4-liter V-6 engine that’s mated to a 10-speed automatic transmission.