What Does the S in Automatic Transmission Mean?

1 Answers
MacQuinn
07/25/25 9:02am
Automatic transmission S stands for Sport mode, which is the abbreviation of Sport. In Sport mode, the transmission can shift gears freely, allowing the engine to maintain high RPMs for a longer period, enabling the car to drive at low gears with high RPMs for an extended time, thereby achieving greater torque output and acceleration. Generally, the S gear is used when climbing or descending steep slopes or when needing to overtake quickly. Using the S gear may reduce the car's comfort and increase fuel consumption, so it should be used with caution. Although both D gear and S gear are considered forward gears, there are differences. When the car is in D gear, it shifts gears according to the pre-set program of the onboard computer, with all processes being fixed—the car drives entirely according to its pre-set program. In S gear mode, the onboard computer no longer follows a rigid program but delays gear shifts appropriately based on the situation, resulting in better power performance.
Was this review help?
9
1
Share
More Forum Discussions

Does Coasting in Neutral Save or Waste Fuel?

Not necessarily fuel-saving, and may even waste fuel. Many modern vehicles are equipped with electronically controlled fuel injection systems. When the car is shifted into neutral, the ECU defaults to assuming the car is idling, thereby increasing fuel injection to maintain idle speed. The electronic fuel injection control system inherently has fuel reduction or cutoff functions. Shifting to neutral in such scenarios not only disables these functions but also increases fuel injection. Fuel-saving tips: 1. Smooth Driving: One of the most practical and effective fuel-saving methods is maintaining steady driving. For small-displacement vehicles, it's best to keep speeds between 60 to 80 km/h, while for larger-displacement vehicles, maintain speeds between 80 to 100 km/h. 2. Avoid Congested Routes: Before driving, check the route. If it's congested, it's best to detour. In traffic jams, the car not only can't move but also remains in an operating state, which wastes fuel. 3. Reduce Vehicle Weight: The weight of the car also increases fuel consumption. Therefore, if some items in the car are temporarily not needed, try to remove them to reduce the vehicle's weight.
19
3
Share

What are the effects of spark plug leakage?

The effects of spark plug leakage include: 1. Engine power loss; 2. Unstable idle speed; 3. Engine stalling at high speeds; 4. Increased fuel consumption; 5. Engine failure to start; 6. Spark plug malfunction; 7. Engine damage. Other common spark plug faults include: 1. Spark plug leakage; 2. Black deposits on the spark plug electrodes; 3. Fractured insulator tip; 4. Oil fouling on the spark plug; 5. Spark plug erosion; 6. Excessive spark plug gap. The function of the spark plug is to discharge the high-voltage pulse sent by the high-voltage wire, breaking down the air between the two electrodes to generate an electric spark, thereby igniting the air-fuel mixture in the cylinder.
1
4
Share

What engine does the Sagitar use?

The Sagitar uses the EA211 engine. An engine is a machine that can convert one form of energy into another, typically transforming chemical energy into mechanical energy. Taking the 2021 Sagitar Manual Fashion Smart Edition as an example, it is a compact 4-door, 5-seater sedan with the following dimensions: length 4753mm, width 1800mm, height 1462mm, wheelbase 2731mm, and a fuel tank capacity of 50 liters. The 2021 Sagitar Manual Fashion Smart Edition is equipped with a 1.2T turbocharged engine, delivering a maximum power of 85kW and a maximum torque of 175Nm, paired with a 5-speed manual transmission.
18
4
Share

What is the method for resetting the tire pressure on a Lincoln MKX?

Lincoln MKT tire pressure reset method is as follows: 1. Turn on the central display: First, start the car and turn on the central display, then press the button; 2. Select tire settings: Then choose the tire settings in the vehicle settings options; 3. Press "SET": Next, press the "SET" button to proceed with further settings; 4. Click confirm: Then click confirm in the pop-up window; 5. Complete tire pressure monitoring initialization: The car will finally complete the "tire pressure monitoring initialization". The hazards of abnormal tire pressure are divided into the following two aspects: 1. Excessive tire pressure: Tire friction and adhesion will decrease, affecting braking performance. This can cause steering wheel vibration and deviation, reducing driving comfort. It accelerates wear on the central tread pattern of the tire, shortening the tire's lifespan. Increased body vibration indirectly affects the lifespan of other components; 2. Insufficient tire pressure: Increased friction coefficient with the road surface leads to higher fuel consumption. It causes the steering wheel to become heavy and prone to deviation, posing safety risks. Increased movement in various parts of the tire results in excessive rolling, causing abnormal tire heating.
4
4
Share

What are the methods for checking refrigerant leaks?

Methods for checking refrigerant leaks include: 1. Visual inspection method; 2. Soap bubble method; 3. Nitrogen water leak detection method; 4. Halogen leak detector method; 5. Gas differential pressure leak detection method. The steps for refrigerant charging are: 1. Prepare refrigerant that matches the required model; 2. Prepare qualified refrigerant charging tools; 3. Connect the car air conditioning system to the charging tool adapter; 4. Evacuate the system; 5. Charge the refrigerant. The properties required for refrigerants are: 1. Excellent thermodynamic characteristics to ensure high cycle efficiency within the specified temperature range; 2. High heat transfer coefficient, low viscosity, and low density; 3. Good miscibility with lubricating oil; 4. Safety requirements include being non-toxic, non-irritating, non-flammable, and non-explosive; 5. Good electrical insulation properties.
8
1
Share

What do IG1 and IG2 represent in automotive circuits?

In the circuit diagram of a four-cylinder engine, IG1 and IG2 respectively drive two spark plugs of the engine. Here are the specific details: 1. Explanation: IG1 and IG2 in the circuit are markings for the live wires used in Japanese and Korean vehicles. IG1 is for high-power electrical appliances (excluding the starter), while IG2 is for the engine control unit and small electrical appliances. When the key is turned to ON, both IG1 and IG2 are powered. When turned to ST, IG1 is cut off, and IG2 and the ST terminal are powered. The reason for cutting off IG1 is to fully meet the starting requirements. IG1 and IG2 are equivalent to the X and line 15 in German vehicle circuit diagrams. 2. Four-cylinder engine: A four-cylinder engine, also known as a four-cylinder motor, is a machine capable of converting one form of energy into another more useful form of energy. Typically, it converts chemical energy into mechanical energy.
20
5
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.