The Porsche Panamera Sport Turismo range already has a plug-in hybrid in the Panamera 4 E-Hybrid Sport Turismo, now here’s something range topping. The Porsche Panamera Turbo S E-Hybrid Sport Turismo (phew!) has been added to the family, and it’s quite a beast.

Like the top sedan, this flagship Sport Turismo variant combines a 550 hp 4.0 litre V8 engine with an electric motor, resulting in a system power of 680 hp (130 hp more than the regular Turbo) and 850 Nm of torque from just above idle speed. That means it accelerates from zero to 100 km/h in just 3.4 seconds and reaches a top speed of 310 km/h.

To top off the all round performance, average consumption in the European cycle is three litres per 100 km (33.3 km/l). It achieves that by having a pure EV range of up to 49 km, which means trips to the shops may produce no emissions whatsoever. Top speed in EV mode is 140 km/h. The 14.1 kWh lithium-ion battery can be charged within 2.4 to six hours.

The decoupler integrated into the hybrid module is electromechanically actuated via an Electric Clutch Actuator. The result is short response times and a high level of comfort. The speedy eight-speed Porsche Doppelkupplung dual-clutch automatic transmission transmits power to the standard Porsche Traction Management (PTM) adaptive all-wheel drive system.

This car comes with all second-gen Panamera’s good stuff, including the digital Porsche Advanced Cockpit, Porsche InnoDrive including adaptive cruise control and optional rear-axle steering. But the Sport Turismo – with its higher roof line, wide opening tailgate (loading edge height of just 628 mm), 425 litre boot (seats fold to make 1,295 litres) and 2+1 rear seats – is the more practical car.

The roof spoiler deserves mention. The pitch is set to one of three different angles depending on the driving situation and selected vehicle settings. It also generates additional downforce of up to 50 kg on the rear axle.

Up to a speed of 170 km/h, the aerodynamic guide element – a central system component of the Porsche Active Aerodynamics (PAA) – stays in its retracted position at an angle of minus seven degrees to follow the roof line, which slopes to the rear. Above 170 km/h, the roof spoiler automatically moves to the performance position with an angle of plus one degree, increasing stability and lateral dynamics.

When in Sport and Sport Plus drive modes, the spoiler automatically moves to the performance position at speeds of 90 km/h upwards. PAA also provides active assistance by adapting the roof spoiler’s angle of inclination to plus 26 degrees when the panoramic sliding roof is open at a speed of 90 km/h or above in order to compensate for the turbulence created.

Standard kit includes Porsche Dynamic Chassis Control (PDCC Sport) roll stabilisation with Porsche Torque Vectoring Plus (PTV Plus) rear differential lock, Porsche Ceramic Composite Brake (PCCB) brakes, 911 Turbo-style 21-inch alloys, Power Steering Plus, the Sport Chrono Package and auxiliary air con. As with all STs with over 440 hp, this one sports adaptive three-chamber air suspension.