The P400e has a driver-selectable EV mode, which will switch the vehicle to full EV operation, however the system will introduce the petrol engine should the driver require more power than is available through the electric motor alone, or if the battery charge drops to an insufficient level to maintain progress EV mode will be available for a range of up to 51km, but will be reduced by heavy usage eg load carrying, towing, high speed or off road usage.