An EV will always win if your sole priority is running costs, but my last pure petrol car was a 2000cc 4-cylinder 4WD SUV yet averaged over 42mpg over the 3 years that I had it, and could stretch to 50mpg on a steady motorway run. So if used on that test versus EVs charged at expensive motorway service stations, it would have given them a run for their money, and cost half what the V8 ‘comparison’ car did. Also, with a 600 mile range it wouldn’t have needed filling up at crazy prices – or charging stops!