Cayenne S Hybrid

Next year’s hybrid version of the Porsche Cayenne will combine a blown Audi V6, an electric motor and an 8-speed transmission to offer V8-levels of performance or four-cylinder economy.

According to new technical information just released from Stuttgart, the Cayenne S Hybrid will earn its ‘S’ badge with a 0-62mph sprint of just 6.8secs. Additionally, Porsche’s full parallel hybrid design will allow the big SUV to ‘coast’ under electric power alone at speeds of up to 86mph, greatly reducing fuel consumption and emissions at highway speeds. Current hybrid concepts offer their greatest benefits in city driving, says Porsche.

As a result, we can expect the Cayenne S Hybrid to deliver close to 30mpg under new European Driving Cycle rules - an official ‘combined cycle’ figure in the same ballpark as a big SUV with weedy four-cylinder power. CO2 output is said to be 20 percent lower than a combustion engine drive train with equivalent performance.

The Cayenne S Hybrid uses Audi’s 333bhp supercharged 3.0 V6 DFI engine with a 52hp three-phase electric motor (that also acts as the alternator) both driving through a newly developed 8-speed automatic transmission. The package also includes a 38kw nickel metal hydride battery that is small enough to fit in the Cayenne’s spare wheel well. A new Hybrid Manager control system requires 20,000 individual data parameters to keep the show on the road – three times the amount of data required by a regular EC system says Porsche.

However it’s the 8-speed transmission that seems to have been the key to unlocking the big Porker’s ‘green’ potential. Porsche engineers have added a new electrical drive pump to the conventional transmission oil pump to shift gears smoothly and efficiently in electric mode. Top speed comes in sixth gear, so the two higher gears serve to further reduce engine speed to enhance fuel economy. It’s the long 8th gear that enables the driver to 'coast' without the combustion engine at speeds up to 86 mph.

A similar hybrid set-up is promised for the new Panamera four-door sports saloon in 2011.

Comments (50) Join the discussion on the forum

  • Mr Gear 23 Feb 2009

    I always have problems understanding the point of taking a huge, overweight car and then trying to make it more efficient. Why not start with something more efficient in the first place?

    But if we can have our cake and eat it (performance and economy), I suppose its a good thing.

  • Lextacy 23 Feb 2009

    This would sell like hot cakes to those thinking they are doing their bit to save the environment, increasing the profits of Volkswagen, or sorry i meant Porsche !!!! What a loads of cobblers. Expect to see a skoda and seat hybrided soon and i dare not mention a Rolls Royce as well !!!!!!!

  • lankyarcher 23 Feb 2009

    A pointless vehicle becomes slightly less pointless! All that weight just disagree's with me.

    All car's carry far too much weight these days IMHO.

    Rant over......;)

    Edited by lankyarcher on Monday 23 February 12:08

  • Panayiotis 23 Feb 2009

    If this helps to allow Porsche to keep churning out cars like the GT3RS, then so be it.

  • nickpan 23 Feb 2009

    But how will it offer V8 like performance?

View all comments in the forums Make a comment