The P400e was the first plug-in electric hybrid vehicle in the Range Rover Sport line-up with a claimed 81.9 mpg which can be achieved on a sensibly driven long-run is massively appealing to Range Rover customers who put serious miles on their cars. In addition, the fact that it can also run in a purely electric mode for short trips producing zero tailpipe emissions, will be music to environmentalists’ ears. All this low emission high fuel efficiency wizardry has been made possible by a 2.0L Ingenium engine coupled to an 85KW electric motor. The electric and petrol systems can work separately or together whilst using regenerative braking or a plug-in charger to top up the 13KWH battery. Together they produce nearly 400hp, meaning despite the extra weight of the battery technology the P400e is no slouch.