The **Start-Stop system** is an **efficient driving** technique that helps **reduce fuel consumption**. This system works by automatically stopping the engine when the vehicle is momentarily stationary, such as at a traffic light or in a traffic jam. By stopping the engine, the vehicle does not consume fuel while it is stationary, which contributes to a more efficient use of fuel. Additionally, since the engine is not running, it does not emit polluting gases, which also benefits the environment. Therefore, the Start-Stop system is a key tool for decreasing fuel consumption and, consequently, saving money and reducing pollution.