Engine braking over normal braking is far more fuel efficient. Since it turns off fuel consumption, as opposed to simply braking or putting the car in neutral, you are using less fuel.

You will use less gas when pulling away in a lower gear than you will if you’re pulling away at low speeds in a higher gear. Although you might think engine braking would save only a little fuel here and there, the amount you could save on long trips can add up, giving you more bang for your buck.