Quote:
Originally Posted by samwichse
Yes, they could have done much better.
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Thank you for the list, but could you please cite your source of information?
I think it's been at least 3 years since I looked at a complete Cd list, certainly improvements have been made fleet wise I can see.
Such a jump may be connected to EPA fuel economy regulations. I wonder if there is a chart for this.
Found this.......(see below)........several charts and graphs in link below.
Corporate Average Fuel Economy
https://en.wikipedia.org/wiki/Corpor...ation_proposal
Quote:
Model year 2012-2016 Obama Administration proposal
The new policy will result in yearly 5% increases in efficiency from 2012 through 2016...........
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A 4 or 5 mpg improvement from 2012-2016 (looking at "Agreed standards by model year, 2011-2025" chart in link), I'm guessing much of this because of aerodynamic design effort and study. However I have no support for this belief other than the numbers
samwichse posted and my memory of what Cd's used to be a few years ago.