Cost per mile driven. 1/10th cost is on the more favorable end of the spectrum, but it's achievable if you can charge at home using an off-peak tariff. The rati

Cost per mile driven. 1/10th cost is on the more favorable end of the spectrum, but it's achievable if you can charge at home using an off-peak tariff. The ratio depends very much on what petrol MPG you compare it to.