Does using AC use more gas in your car? I keep hearing some people

It does, but it's not a hard hit to your mileage anyways b

The power to run the compressor has to come from somewhere.

And it's not a small amount of power, like the difference between your headlights being on or not.

>>17858826
Yes but the increase in energy to run the A/C is often less than the increase in energy needed to drive with the windows down due to increase in drag

>>17858836
>>17858841
>>17858946
Thanks anons.

>>17858836

Depending on engine and AC it can be something like 8-10% increased fuel consumption...

On small petrol cars it's quite a lot actually, and you feel a noticeable loss in power.

It equalizes somewhere around 55 mph. Anything below that and it's more efficient to open windows. Anything higher and the drag is too much.

>>17858826
>does using A/C use gas
yes, energy is not free
>is using A/C more efficient than lowering your drag coefficient by opening a window at highway speeds?
yes

>>17858946
This is true. It obviously depends on your vehicle, but generally it's actually more efficient to run the AC.