What is the BMW Auto Start-Stop Function?

[DiMaggie]

Engine auto start-stop technology automatically shuts off the engine when the vehicle comes to a temporary stop (such as waiting at a red light) during driving. When it's time to move forward again, the system automatically restarts the engine. 1. Advantages of the auto start-stop function: The benefit is that when driving on stop-and-go roads, shutting off the engine under conditions where auto start-stop is active can save fuel and reduce exhaust emissions. 2. Disadvantages of the auto start-stop function: The auto start-stop function places stringent demands on the battery. Vehicles equipped with this feature require larger batteries and higher-quality starter motors.