Will having my windows down decrease my gas mileage?

Question

Will having my windows down decrease my gas mileage?

Answer 1

Not in particular. It creates drag and is equal to keeping your air conditioning on.

Answer 2

i think the speed is 55... windows down up to 55 saves gas... over 55 the drag is to much and then it would be better to use air conditioning

Answer 3

Only at higher speeds.    Aerodynamics doesn't come into play until you reach speeds over 55-60 for most vehicles.  

In fact,   having the windows down lets built up heat exit the car without using the A/C (and fuel)  when just starting out in the summertime.

Answer 4

idk - a wind resistant thing maybe?

Answer 5

yes and no.