This means that sport is a sport mode, which is used to increase power output and output higher torque. Press this button, I can see a green rectangle on the dashboard with a sports sign inside, which means we have turned on the sports mode. Turning on the sports mode can keep the car at a high speed, enhance the power output, and let us easily overtake at high speed.
But personally, I don't think it is necessary. After all, this movement mode is a double-edged sword. Although it can maintain a high power output, it consumes a lot of fuel, which is 1-2 times more than that of normal mode or ECO mode. If you are looking for a sense of acceleration and overtaking, you can try it, but remember to pay attention to traffic safety and speed limit.