V8-powered sedan and wagon will hit 100km/h in 4.1 seconds, with a top speed nudging 300km/h. Hold on tight, kids.

Porsche has revealed the Panamera and Panamera Sport Turismo GTS, a new sub-Turbo variants for its four- and five-door executive express.

Power in the GTS comes from a twin-turbo 4.0-litre V8 pumping out 338kW and 620Nm to all four wheels through an eight-speed PDK transmission. That's 15kW and 100Nm up on the previous GTS, helping both variants hit 100km/h in just 4.1 seconds.

You'll be doing 292km/h flat out in the Panamera GTS, and 289km/h in the Sport Turismo GTS. Claimed fuel economy is 10.3L/100km and CO2 emissions are pegged at 235g/km, described un-ironically by Porsche as "moderate" in its press materials.

Along with the uprated powertrain, the GTS gains the full gamut of Porsche chassis systems. It rides on three-chamber adaptive air suspension, and sits 10mm lower than the standard car thanks to the PASM adaptive chassis system.

With 390mm front and 365mm rear brakes, you shouldn't have trouble stopping the Panamera GTS on the track. The brakes hide behind 20-inch alloy wheels as standard, while there are unique body add-ons and graphics to better differentiate the car from its more mundane brethren.

Behind the wheel, there's a heated steering wheel with paddles, Alcantara trim, and plenty of anodised aluminium. Speccing the GTS package adds coloured trim for the rev counter, contrast stitching, and GTS logos scattered around the interior in Carmine Red or Crayon.

As with the wider Panamera range, there's a 12.3-inch central touchscreen, along with a partially-digital driver display. This model debuts a colour head-up display for the range, configurable based on what the driver wants to see.

Australia

The GTS is available to order right now, with pricing to start at $364,100 before on-road costs in Panamera guise, and $371,400 as a Sport Turismo. Both models will touch down during the first quarter of 2019.

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