In an average motor car, in what circumstances is driving with the windows open less economical than driving with the windows shut and the air conditioning on?

daddy1161992

on the highway, the added wind resistance of having the windows open, negates the amount of gas used by the air conditioner. Aug 31 05, 9:11 PM

gmackematix

You have the gist of why but according to what I read recently, it isn't true at all speeds. Sep 01 05, 11:18 AM

NEfromNY

So that means you have to be going at least a certain speed? Sep 03 05, 8:25 PM

daddy1161992

I wasn't sure of the speed, but I think it's 45 mph, when wind resistance negates the fuel used by the a.c.,also on the subject of mpg, wind resistance goes up exponentially with speed. Sep 11 05, 9:08 PM

Create a Free FunTrivia ID to add to, request more/new answers, or edit this entry

Who said, "It is better to keep your mouth shut and appear stupid than to open it and remove all doubt?" Which US president had an IQ of less than 100? Which athlete set six world records in less than an hour in 1935? What is the world's fastest motor bike and car?

1 Open Windows Some general questions about Windows Operating Systems. Operating Sytems Tough 10 Q paulbrec Mar 18 06 1977 plays 2 Windows 98 Introduction Test your knowledge of Windows 98. Operating Sytems Easy 10 Q profbrian Aug 05 00 6507 plays 3 "Emerald Windows" This is a quiz on the book "Emerald Windows" by Terri Blackstock. Enjoy! Blackstock, Terri Tough 15 Q Jacifan Sep 13 02 114 plays