17-inch wheels encircle 13.1-inch brakes on the front end (with 12.2-inch stoppers out back). Use a light pedal foot, however, and you'll also be able to take advantage of the regenerative braking system.
Look under the hood and you'll find a 3.5-liter, Atkinson-cycle V-6 engine that works in tandem with the electric motor. The total system output of the Hybrid Synergy Drive (HSD) system is 338 horsepower.
I was able to test the GS Hybrid on public roads on a course that included highway cruising and a few curvy back roads. The largish sport sedan tackled both situations with its dignity intact, but the hybrid system's ECVT just didn't feel up to the task of true performance driving.
This selector gives drivers access to the GS' five driving modes. Eco de-emphasizes power in favor of efficiency, Normal is the baseline tune, Sport emphasizes increased throttle response and engine output, and Sport+ brings the adaptive suspension into the mix at its most aggressive setting. Finally, EV mode attempts to keep the hybrid system in full electric operation at low speeds.
At the top of the GS' dashboard is this massive 12.3-inch wide-screen display. It's so big that Lexus was able to divide it into two zones that allow for the monitoring of two different infotainment functions simultaneously.
Users interact with the infotainment system using Lexus' remote touch controller, a joystick that features haptic feedback. I have a bit of love-hate relationship with this controller, at times finding it remarkably easy to use and at others being frustrated by it.