ELi5: Auto start engines

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Hello! New cars have this fun feature of turning your car off when you idle for too long. Whenever I drive a new rental care with the feature I always turn it off because it drives me nuts. I started thinking about it and I thought that idling (at least at a stop light) is more efficient than starting your car again since it takes more fuel to start. Why then do all of these new fuel efficient cars have this feature? I would assume it’s more fuel efficient since they all have them now, I was just wondering how?

Thanks!

In: Engineering

4 Answers

Anonymous 0 Comments

I took a Tesla taxi and we had stop and go traffic. He stopped and started every time traffic stopped and started. I just assumed he knew what he was doing was the best way to do it.

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