The hybrid is powered by both a 3.5-liter engine and an electric motor, for a total system output of 340 hp. The 350 comes with a standard 6-speed transmission, but the 460 comes with eight ratios. The 450h is in a drivetrain class of its own, with an electronic continuously variable transmission. All three models can reach 60 mph from a standstill in just over 5 seconds.
The GS has a lot of high-tech goodies, such as the SmartAccess sensor system, which allows the car to be unlocked by touching the door handle or trunk, and then started with the push of a button. Holding the unlock button on the key fob as you approach the car rolls down all the windows. Available parking assist provides alerts to objects in the way and dynamic radar cruise control maintains a safe distance from the car in front while cruising on the highway.
Safety systems are state-of-the-art, too. Direct tire pressure monitoring, anti-lock brakes with brake assist, a 10-airbag setup, traction control and rain-sensing windshield wipers are standard. The Vehicle Dynamics Integrate Management system prevents a loss of traction using individual-wheel braking and throttle activation. On the 460, it works with the variable gear-ratio steering to maintain control. The available adaptive headlights that help drivers see around bends in the road are standard on the 450h. New this year on both 350 and 460 models is a standard brake override system. When the brake is applied, the system cuts engine power even if the accelerator pedal is also applied, allowing the car to be safely slowed and stopped.
