Quote:
Originally Posted by Baltothewolf
Any idea what kind of increase in mpg I will get between 70 and 75 mph?
|
You will get a negative increase. Try taking it down a few MPH.
Gas Mileage Tips - Driving More Efficiently
Mpg For Speed - Fuel Efficiency Vs. Speed says: "You'd be surprised to learn that a slight decrease in your highway driving speed can significantly reduce your gas consumption, while only adding a few minutes to your travel time. "
They have a calculator you may find enlightening. Plug in your MPGs, miles driven, and the price for a gallon of gas, and it will show you the difference, in dollars and minutes spent, across a range of average speeds.