View Single Post
Old 03-31-2012, 05:47 AM   #10 (permalink)
Master EcoModder
Join Date: Jan 2012
Location: United States
Posts: 1,454

spyder2 - '00 Toyota MR2 Spyder
Thanks: 90
Thanked 271 Times in 208 Posts
Does the wind stay the same that long?
If it stays the same, no 50mph both ways would be worse for fuel economy, since the trip against the wind would require a lot of engine power, and the trip with a tailwind would be reducing engine load, which reduces efficiency. Going faster with tailwind and slower against the wind will decrease overall energy requirement from the engine, and increase average efficiency too.
  Reply With Quote