I don’t know the specifics of fuel efficiency for gas cars, but making electricity by burning fuel also produces a lot of waste heat, about 2/3 of the heat goes to the birds, 1/3 is converted into electricity.
In ideal situations an ICE could reach 45% efficient. However it is very hard to maintain ideal conditions, and a car in the real world won’t be even close so 20%. This is one reasons a power plant can be more efficient - they have abilities to make conditions more ideal that you cannot do with your car.
I don’t know the specifics of fuel efficiency for gas cars, but making electricity by burning fuel also produces a lot of waste heat, about 2/3 of the heat goes to the birds, 1/3 is converted into electricity.
20% at most in a car.
In ideal situations an ICE could reach 45% efficient. However it is very hard to maintain ideal conditions, and a car in the real world won’t be even close so 20%. This is one reasons a power plant can be more efficient - they have abilities to make conditions more ideal that you cannot do with your car.