Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Windows rolled down at high speed (effect on fuel consumption?)

NeilBlanchard · 04-03-2012, 09:48 PM

I have found that cracking the front windows open about 1/2" can actually help the drag, and a lot more air comes in the dash vents. This gives much better FE than using the A/C or opening the windows more.

04-03-2012, 09:48 PM	#5 (permalink)
NeilBlanchard Master EcoModder Join Date: May 2008 Location: Maynard, MA Eaarth Posts: 7,908 Mica Blue - '05 Scion xA RS 2.0 Team Toyota 90 day: 42.48 mpg (US) Forest - '15 Nissan Leaf S Team Nissan 90 day: 156.46 mpg (US) Number 7 - '15 VW e-Golf SEL TEAM VW AUDI Group 90 day: 155.81 mpg (US) Thanks: 3,475 Thanked 2,952 Times in 1,845 Posts	I have found that cracking the front windows open about 1/2" can actually help the drag, and a lot more air comes in the dash vents. This gives much better FE than using the A/C or opening the windows more. __________________ Sincerely, Neil http://neilblanchard.blogspot.com/