Why does fuel economy get better on the highway, but EV range gets worse?

Question

Why does fuel economy get better on the highway, but EV range gets worse?

In: 463

Answer 1

Mostly because EVs have regenerative braking. Both gas and electric cars use more energy to maintain speed on the highway(drag increases with velocity squared). The reason gas cars get worse fuel economy in city driving is that you stop more frequently, and gas cars throw away all the energy they spent accelerating every time they stop, while EVs can recover most of it.

In both cases, the most efficient possibility is driving slowly without braking.