Lexus is set to unveil the F Sport version of its new GS sedan at the SEMA show in Las Vegas on November 1. The GS F Sport features bolder exterior design elements than its civilian counterpart, and these include a new front bumper design with larger side grilles, as well as a dedicated mesh design for the upper and lower grilles.

At the rear, the F Sport gets a grey metallic finish to the bumper diffuser, and on the GS 450h F Sport there’s an additional chrome moulding on the bumper’s lower section. The package also includes a rear spoiler and – exclusive to the grade – dark metallic finish 19-inch alloy wheels, wearing staggered width rubbers – 235/40 in front, and 265/35 series at the rear.

As for the interior, it gets matching door and seat upholstery finished in a new Garnet (deep red) shade exclusive to the F Sport. Other features include aluminium trim elements, 16-way adjustable F Sport front seats, a black headliner and pillar finish, dimple perforated leather steering wheel and gear knob covers as well as aluminium pedals and scuff plates with the F Sport logo in black.

Performance-wise, all the GS F Sport models are fitted with larger, 356 x 30 mm ventilated front disc brakes, of which the hat section of the braking system’s two-piece rotor is made of aluminium, to reduce weight as well as suppress heat deformation.

The F Sport also gets a retuned front and rear suspension, supported by Adaptive Variable Suspension to maximise body control and steering response. The front and rear shock absorbers have been modified to optimise AVS damping control, and uses low viscosity oil to improve efficiency by reducing friction. The rear shocks have also been inclined further to the rear, and the lower bushings have been made larger and stiffer.

The AVS features two damper setting controls – Normal and Sport S+, the latter for greater body control and precise responses to steering when cornering. Switching to Sport S+ mode automatically increases the difference between inner and outer shock absorber damping.

At the same time, the Variable Gear Ratio Steering automatically reduces the steering gear ratio by about 10% while the electric power steering increases steering assist torque by about 4%, to sharpen handling and optimise steering feel.

As for drive modes, the car has four – Eco, Normal, Sport S and Sport S+. In Sport S mode, engine speed and throttle response are adjusted to give a more engaging driving experience. Switching to Sport S+ combines the enhanced powertrain output of Sport S with co-ordinated control of the GS’s Vehicle Dynamics Integrated Management system.

The last includes the AVS and EPS plus, where fitted, the Lexus Dynamic Handling system, Variable Gear Ratio Steering (VGRS) and Dynamic Rear Steering (DRS), the trio being seen as standard on the GS 450h F Sport, making it the world’s first hybrid vehicle to feature an integrated four-wheel steering system.

The handling system monitors vehicle speed, steering direction and driver inputs, and calculates the optimum angle for all four wheels. With VGRS at the front and DRS at the rear, the system can independently control front and rear wheel steering angles to greatly improve turn-in response, rear grip, stability and overall agility when cornering.

The DRS monitors vehicle speed and yaw rate, steering angle and speed, and lateral G force to determine the required rear wheel steering input, up to a maximum two degrees – at most speeds below 80 km/h) the front and rear wheels turn in opposite directions, while in certain conditions above that speed, they turn in the same direction.