What is the automatic S file? What's the best speed for S gear?

Automatic S-gear is actually the abbreviation of Sport gear, which is literally understood as a sports mode focusing on power output. When you switch the gear to the S gear, the gearbox can shift gears freely, but the shift will be delayed, which will keep the engine at a high speed for a long time, and make the car drive at a low speed and high speed for a long time, thus obtaining greater torque output and acceleration.

Theoretically, the larger the throttle opening, the larger the intake air volume, followed by a substantial increase in fuel injection and the improvement of power performance. Then the method of boosting power in S gear is very simple. At the same throttle depth, the throttle opening of S gear is larger than that of ordinary D gear, so it is easy to understand that different driving and acceleration experiences are obtained.

Because of its strong power, the S gear will generally switch to this gear when overtaking or climbing, and will switch to the more economical D gear after the action is completed. After all, from the point of view of fuel consumption, the fuel consumption of S-mode is more than that of ordinary mode, because the fuel injection quantity increases at high speed.

However, using S gear is also good for vehicles. Cars that drive in congested sections of cities for a long time have a lot of carbon deposits in their engines. Regular and correct use of S-gear is conducive to removing carbon deposits from the engine, improving fuel economy and prolonging engine life.