How to Use the Auto Start-Stop Function in Audi A3?
2 Answers
Audi A3's auto start-stop function automatically turns off the engine when temporarily stopping during driving. Here is a partial introduction: Auto Start: When you need to move forward again, the auto start system automatically restarts the engine. The STT intelligent fuel-saving system is a set of systems that control engine start and stop. The working principle of the start-stop system is that when the vehicle stops moving due to congestion or at an intersection. Press the Brake Pedal: The engine idles without engaging any gear, the wheel speed sensor of the anti-lock system shows zero, and the electronic battery sensor indicates there is enough energy for the next start. After these three conditions are met, the engine automatically stops rotating. When the traffic light turns green, the driver presses the clutch.
I usually drive an Audi A3 to commute and always use the auto start-stop function to save fuel. It's basically enabled by default—the system activates once you start the car without needing extra setup. When stopping, like at a red light with the brake firmly pressed, the engine shuts off automatically after a few seconds, and a green 'A' icon appears on the dashboard. When the light turns green, releasing the brake or lightly pressing the throttle instantly restarts the engine, with quick power recovery. In heavy traffic, if the frequent start-stops feel annoying, you can press the 'A' button (the one with a circle) near the instrument panel to temporarily disable it; pressing it again reactivates the function. Overall, it's very smart—the system automatically decides whether to operate based on speed and temperature, so no manual switching is needed. Getting used to it can significantly reduce fuel consumption. If the battery is low or the AC is running hard, it may temporarily deactivate to protect components. I've encountered this a few times without major issues. I recommend trying it in city driving for a few weeks to experience the convenience.
