If we're taking battery costs into account, then surely ICE servicing costs and replacement ICE components (due to wear & tear) need to be taken into account too? I spent a fortune having my Volvo D5 engine rebuilt a few years ago... at 60,000 miles, with a full service history...One factor that is ignored in virtually all advertising is the cost per mile of the battery. There is either the extra capital cost of an EV versus a ICE, or, the rental cost of the battery. In the case of the Nissan Leaf it works out at around 9.3ppm (Pence per mile) ,using Nissan figures.This needs to be added to the stated 2.3 to 5 ppm claimed by the Manufacturers.