Porsche Cayenne E-Hybrid range, MPG, CO2 & charging

Faster charging and a Type 2 charging cable cost extra, but otherwise the Porsche Cayenne E-Hybrid is competitive

The Porsche Cayenne E-Hybrid has an official WLTP range of 27 miles, but in normal everyday use you’re more likely to see around 20 miles. CO2 emissions are yet to be confirmed, but judging by the sub-70g/km achieved by the Porsche Panamera four-door saloon - which utilises the same powertrain - the Cayenne E-Hybrid should be reasonably competitive.

That said, we expect it to fall short of the sub-55g/km bracket that appeals to company car users. With the battery depleted and the V6 petrol engine in use, you’ll see around 28mpg.

Charging times are similar to those of most rivals, and with the normal three-pin domestic plug cable provided, you can fully charge the Cayenne E-Hybrid in eight hours, making for easy overnight charging.

Range

The E-Hybrid has an official pure electric range of 27 miles, but in normal varied use you’ll actually get around 20 miles from the 14.1kWh battery. More motorway miles (the E-Hybrid will do 84mph in pure electric mode) and cold conditions will see that dip towards 15 miles, although the figure can rise to 25 miles around town.

It’s enough to cater for most people’s commutes, and there are also functions to hold the battery charge and even top up the battery using the turbocharged 3.0-litre petrol engine. When the battery is depleted and you’re relying on the smooth V6, we managed to get around 28mpg.

Charging time

The Cayenne comes as standard with a maximum charging speed of 3.6kW, which equates to around four hours when plugged into a 3.6kW charger. Pay around £500 and Porsche will increase the maximum charging speed to 7.2kW, dropping the fastest full charge time to 2.5 hours.

However, to take advantage of those faster charging times, you’ll need a Type 2 cable that allows you to plug into AC fast chargers. That costs another £300 or so, which seems cheeky on a car of this price. If you decide that you don’t need the faster charging, then simply plugging the Cayenne into a normal socket in your house should still give you a full charge in eight hours. That’s roughly on a par with rivals like the Volvo XC90 T8 and Range Rover Sport P400e.

Battery warranty

The Cayenne E-Hybrid’s battery is covered under warranty for eight years or 160,000km (just under 100,000 miles). However that doesn’t include a guarantee of replacement if the battery’s performance drops below a certain level: for example, the Renault ZOE is eligible for a new battery if the original drops below 75% of its as-new performance within the warranty period. Porsche isn’t an exception here, though: currently no plug-in hybrid is offered with this level of battery cover.