Keeping the car running smoothly can make full use of fuel, while changing the speed frequently will lead to fuel waste. Avoid sudden acceleration and sudden braking as much as possible. According to research, the speed at which fuel can burn completely is 25 to 60 miles per hour (65,438+0 miles or 65,438+0,609 meters). Smooth driving can not only save gasoline, but also prolong the service life of engine, sensor and brake.