Comment by hdgvhicv

A litter of petrol is about 34MJ or about 9.5kWh

It propels a car about 10 miles. About 1 mile per kWh

Charging my electric car via AC at 7kW to replace the power used to drive 90 miles in autumn takes 26kWh according to the meter, so 3.5 miles per kWh.