First thing that came up with my google search shows an accepted value of 8kwh to produce one US gallon .
my EV Landy is not what you would call an efficient EV but for the purposes of the argument it used an average of 33kwh per 100km over the last 12 months / 4600km ,
on petrol it used to drink a tad over 20l/100km or 5.28 US gallons /100km 5.28 x 8kwh equiv to 42.25 kwh/100km
Thats just efficiency, As well if we are talking emissions , Petrol / diesel pollutes twice 1st from mining & the refining oil & 2nd from burning the oil when driving the car , so EV clearly better for the environment .
How gas cars use more electricity to go 100 miles than EVs do | Autoblog
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