What is the BMW Auto Start-Stop Function?

2 Answers
DiMaggie
07/29/25 3:08pm
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.
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McBrody
08/13/25 7:48am
I always find BMW's auto start-stop feature quite interesting. It automatically shuts off the engine to save fuel when you're stuck in traffic or waiting at a red light. The moment you press the accelerator to move, it instantly restarts the engine, and the whole process is very smooth. This system relies on sensors to detect vehicle speed and brake status, shutting off the engine when the car stops, thereby saving fuel consumption during idling. BMW has designed this feature quite cleverly, especially for city driving with frequent red lights, where it can save a significant amount on fuel costs. It also helps reduce exhaust emissions, making it environmentally friendly. However, I should mention that frequent starts might cause some wear on the battery, so it's advisable to regularly maintain and check the battery's health. Overall, this is a common fuel-saving technology in modern cars, and BMW has implemented it well, making driving more economical and eco-friendly.
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