Not so fast... they tested this on two different episodes, 22 and 38. Their first, they said windows were more efficient (but did testing only at 45mph). Later testing using (IMHO) better methods, they showed above about 50mph (for their test vehicle anyway), it's more efficient to use a/c than windows. Certainly this crossover point will vary based on the exact vehicle driven, so take results with a grain of salt...
why not roll down the windows to remove the hotter than ambient air, then roll up the windows and use the a/c?So I'm in Texas and that means my car is automatically 300° when I get in the car.
Is it more efficient to let the battery run the AC to cool it down or to roll the windows down and deal with the potential for extra drag
My suggestion for hot days: turn the a/c on remotely 10 minutes before you leave. You will step into a comfortably cool car, and the hit on range will be tiny.My suggestion for hot days: Roll down all your windows and let the car air for some time. Then close all windows and run AC. Start in Comfort, and once the car is comfortable, switch to Eco.
After all that exercise, you will feel hot no matter how much you blast the a/c!Supposedly if you open a back door, then open and close the front door a few times to pump out the hot air it will help reduce the heat load at startup.