The Porsche Panamera Sport Turismo concept has been revealed in the lead-up to the 2012 Paris motor show, signalling the Stuttgart-based manufacturer’s intentions to produce a wagon version of its luxury four-door saloon and confirming earlier reports.

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Giving us a preview of “a possible Porsche sports car of tomorrow”, the German car maker says the Panamera Sport Turismo combines a next-generation plug-in hybrid drive system for signature Porsche performance with a unique body designed to offer everyday practicality.

At 4950mm long, 1990mm wide and just 1401mm tall, the Porsche Panamera Sport Turismo is 20mm shorter, 59mm wider and 17mm lower than the standard Panamera, and features a longer, flatter roofline with a larger, conventional wagon-style tailgate.

The Sport Turismo concept’s exterior design borrows heavily from its Panamera base car, exemplified by its clean lines and taut panels. Rearward-looking cameras in the side air outlets supersede conventional wing mirrors, while four-point LED headlamps, ‘C-blade’ running lights in the large front air intakes, an adaptive carbonfibre rear spoiler and a sleek black-tinted tail-light strip all represent advancements in design and technology.

Acid green ‘Sport Turismo’ branding on the tailgate, ‘e-Hybrid’ badges on the front doors and matching brake calipers blaze suggestively, hinting at the concept’s environmentally sensitive propulsion system.

The Panamera Sport Turismo features an advanced version of the parallel full hybrid system found in the Panamera S Hybrid and Cayenne S Hybrid.

The 3.0-litre V6 petrol engine continues to produce 245kW of power, while the new electric motor generates approximately 70kW, making it roughly twice as powerful as the motor of Porsche’s existing production hybrids.

A 9.4kWh lithium-ion battery pack allows electric energy to be stored on-board, leading to faster acceleration and facilitating high-speed driving without the use of the internal combustion engine.

A combined total of 306kW is sent to the rear wheels at its peak, launching the Sport Turismo from 0-100km/h in under six seconds.

Its combined cycle fuel consumption is a Toyota Prius-beating 3.5 litres per 100km, while in pure electric mode, the Panamera Sport Turismo has a range of more than 30km and can reach speeds up to 130km/h. A full battery recharge can be completed within two and a half hours.

The Sport Turismo’s interior also gives us a preview of future Porsche designs, with the manufacturer describing it as “a forward-looking interpretation of purist sports car thinking”.

A large TFT display screen in the instrument cluster replaces conventional physical binnacles, and puts the driver in complete control to call up any vehicle information as needed. Two monitors positioned either side display real-time images from the side cameras.

A press of the touch-sensitive e-hybrid binnacle at the far left brings the concept to life, while a similarly sensitive elegant display on the centre console allows the driver to take control of the hybrid drive mode to find their sweet spot on the performance/efficiency spectrum, and also adjust the climate control, electric seats, lights and the communications system.

A smartphone application developed specifically for the Panamera Sport Turismo allows owners to remotely check the car’s charge status and pre-condition the interior by turning on the heating or cooling.

The Porsche Panamera Sport Turismo follows the lead of similar super-luxo, high-performance wagons like the Ferrari FF and the Mercedes-Benz CLS Shooting Brake. While Porsche has given no indication of a production timeline, a wagon variant looks certain to join the global line-up in the coming years.