Under what circumstances is the S gear used?

[Everett]

The usage scenarios of the S gear are as follows: The most common situations to use the S gear are during overtaking or when rapid acceleration is needed in a short time. Since the vehicle needs to downshift to increase RPM and thereby obtain more torque and horsepower output, the S gear is the correct choice at this time. The reason is simple: the D gear setting is biased towards daily driving, and even if the accelerator is fully pressed, the downshifting speed is not as fast as with the S gear. (You can freely switch between D gear and S gear without pressing the brake.) In fact, the S gear can also be used when clearing carbon deposits. The S gear will increase the engine load in a short time, and as the load increases, the internal temperature will also rise, making it feasible to clear carbon deposits in the engine. You can also try the S gear when climbing steep slopes, as it works quite well. Since the D gear automatically upshifts at high RPM, assuming the slope is long, the vehicle will shift up a gear, causing the RPM to drop. However, in S gear mode, it will not automatically upshift, allowing you to handle the slope more comfortably. The S gear is actually a specific mode of the transmission, short for "sport," and many common automatic transmission models on the market today are equipped with an S gear. When the gear is in S mode, the transmission will force downshifts, delaying gear changes to keep the engine RPM in a higher range. This allows the vehicle to operate at a lower gear with higher RPM during driving, thereby achieving greater torque and horsepower output. Things to note when using the S gear: The S gear is not recommended for prolonged use because the engine consumes more fuel at high RPM. Normally, using the S gear will increase fuel consumption by 2 to 3 liters of gasoline and also increase the engine load, which can be detrimental over time. Do not engage the S gear when starting the vehicle cold, as the engine and transmission have not reached their normal operating temperature. Using the S gear at this time will increase the load on both, potentially causing long-term damage to the vehicle. It is not advisable to use the S gear during high-speed cruising unless briefly overtaking. Since the S gear keeps the RPM in a more "aggressive" range, it negatively impacts fuel economy and increases oil temperature, making it unsuitable for high-speed cruising.