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.
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.