– Why do people say that driving a car at the same speed consumes less fuel in comparison to driving it at varying speeds over long distances

Question

– Why do people say that driving a car at the same speed consumes less fuel in comparison to driving it at varying speeds over long distances

In: Physics

Answer 1

Because actual driving consumes much less fuel than acceleration: you only need to overcome air resistance and not accelerate the car. If you drive at varying speeds, you need to accelerate often.