Yes it's difficult to compare. Many people like to take into account the efficiency of the electricity production when talking about EV, which is an important t

Yes it's difficult to compare. Many people like to take into account the efficiency of the electricity production when talking about EV, which is an important thing to do, but forget that gaz does not appear magically in a gaz tank. The efficiency of having gaz in a gaz tank is shit. I don't have the numbers because I'm lazy, but I remember reading that it takes more energy to bring one liter of gaz in a car tank, if you consider the full chain, than the energy required to drive a EV on the same distance. So even before you start to turn on the cars, an EV has used less energy.