Does the Engine Auto Start-Stop Function Save Fuel?
2 Answers
The engine auto start-stop function saves fuel, and its usage method is: 1. When encountering traffic lights or other reasons for stopping while driving, the engine automatically shuts off after braking; 2. When starting again, simply release the brake and press the accelerator or gently turn the steering wheel, and the engine will restart. The engine auto start-stop function button is AOFF, and its working principle is: 1. When braking to stop and shifting to neutral, the system automatically detects that the engine is idling and not in gear, the speed sensor shows zero, the battery sensor shows energy, and the engine automatically stops rotating; 2. When pressing the clutch, releasing the brake, or turning the steering wheel, the system quickly starts the engine.
To be honest, I've driven cars with auto start-stop function for years. In congested cities, it really saves fuel. Every time you stop at a red light, the engine shuts off, saving 10-15% fuel. Calculated over a year, it can save hundreds of dollars in fuel costs. But the premise is that the stop time exceeds 20 seconds - short stops aren't cost-effective as the restart consumes more fuel and increases wear on the battery and starter. I rarely use it on highways since there aren't frequent stops. It's also less effective in cold weather because cold engine starts are inefficient. Overall, it's effective for saving money during urban commuting, but you need to adjust settings based on traffic conditions - don't dismiss it outright.
