The Lexus GS rivals models like the BMW 5 Series and the Mercedes-Benz E-Class. The most affordable of the three available versions is the GS 350 AWD, which comes with a 3.5-litre V6 paired with a six-speed automatic gearbox. As for the GS 450h, it offers Lexus' hybrid drivetrain and 3.5-litre V6 to unleash a total of 338 horsepower. The primal GS F features a 5.0-litre V8 with 467 horsepower.