On hot summer days, it’s better to use your car’s air conditioner instead of opening the windows when driving. The reason is two-fold: Air conditioners today are incredibly efficient, and keeping your windows closed helps reduce drag, which maximizes your car’s fuel efficiency. But in the first few minutes of driving, do open your windows. Turning on your car’s air conditioner immediately can cause premature engine failure. So let the breeze cool down the car for a few minutes, then roll up the windows and feel the chill of the AC.
ANDREWS MCMEEL SYNDICATION