We’re yet to drive the new Cayenne S Hybrid but impressions from the passenger seat reveal Porsche’s first series production petrol-electric model will be a clear thorn in the side of rivals such as the BMW X6, Lexus RX400 H and Mercedes-Benz M400 Hybrid.

With performance – both off the line and through the gears - on par with the 400bhp naturally-aspirated 4.8-litre V8 Cayenne S, the new four wheel drive displays exceptional levels of mechanical refinement without any indication of the complex processes taken by its advanced driveline, which was developed in a joint venture between Porsche’s own Weissach based engineers and their counterparts at Volkswagen’s engineering centre in Braunschweig, Germany.

Porsche Cayenne Hybrid - full details

Step off is typical strong, with the electric motor and its 184lb ft of torque providing primary propulsion from standstill up to speeds of 50km/h or until the energy level of the battery runs low.

The only indication of the introduction of the petrol engine – the same unit used by Audi in the S4 – to the drive process from the passenger seat is when the needle on the rev counter – now placed in the centre of the instrument binnacle as with Porsche’s more sporting models - springs to life.