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on the other hand, AC is one of the only electronic features that causes a meaningful hit to fuel economy (and available power, if you have a weak engine). I very much prefer to decide for myself when it turns on.

Your car likely already turns off the AC when you accelerate hard. Most of them do that.

But not at cruise, which op was alluding to

The difference is so minute that I don't see what the point could be.

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