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What is the function of the S gear in an automatic transmission car?

1 Answers

DelMary

07/30/25 8:21am

Here are the main functions of the S gear in an automatic transmission car: 1. The S gear is the sport mode, which allows for faster acceleration. 2. The S gear is the car's sport mode, where the transmission can shift freely, but the shifting timing is delayed, keeping the engine at high RPM for a longer period. This allows the car to move at a lower gear and higher RPM for an extended time, resulting in greater torque output and acceleration. Here are some tips for using the S gear: 1. Generally, when overtaking, you can engage the S gear to enhance acceleration. Engaging the S gear can increase the engine load in a short time, but the S gear only delays upshifting without changing other operational aspects. This will inevitably increase the transmission load in a short time, accompanied by a rise in temperature, leading to increased wear. Therefore, try not to use the S gear for extended periods. 2. Since fuel injection increases at high RPM, the S mode consumes more fuel than the normal mode. Avoid engaging the S gear during vehicle startup, high-speed cruising, and coasting. 3. Cars that frequently drive in congested urban areas tend to accumulate more carbon deposits in the engine. Therefore, using the S gear appropriately at regular intervals helps remove carbon deposits from the engine, improve fuel economy, and extend the engine's lifespan.

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