Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - When does having your windows down start to effect your mileage?

Chris D. · 03-08-2008, 05:34 AM

I was curious if anyones ever logged any #'s for windows down and when it really starts to effect FE?

I have vent visors on my truck and when on the freeway I have the cool air vent on (no fan) using the cowls pressure to push air into the cab..

I also have my windows cracked slightly in addition to the vent visors..
Here are the visors..

Not my truck, but same exact design..

I orignally bought them because I like a bit of breeze when driving and I dont like getting wet when raining..

Ya think these are helping things a bit vs not having them with just the window cracked open?

I'd just like to hear some opinions or data..
thanks

03-08-2008, 05:34 AM	#1 (permalink)
Chris D. EcoModding Minded Join Date: Jan 2008 Location: Eagan, MN Posts: 667 Lunar Mist - '02 Toyota Tacoma SR5 90 day: 25.31 mpg (US) Silver Streak - '08 Toyota Corolla S 90 day: 38.25 mpg (US) Thanks: 67 Thanked 25 Times in 12 Posts	When does having your windows down start to effect your mileage? I was curious if anyones ever logged any #'s for windows down and when it really starts to effect FE? I have vent visors on my truck and when on the freeway I have the cool air vent on (no fan) using the cowls pressure to push air into the cab.. I also have my windows cracked slightly in addition to the vent visors.. Here are the visors.. Not my truck, but same exact design.. I orignally bought them because I like a bit of breeze when driving and I dont like getting wet when raining.. Ya think these are helping things a bit vs not having them with just the window cracked open? I'd just like to hear some opinions or data.. thanks __________________