Today I responded to EPA Administrator Lisa P. Jackson's request for comments regarding the proposed window stickers. The response consisted of a letter and an overview of the survey we have been conducting among car shoppers. The survey was surprising in that the reaction was overwhelmingly against the sticker with the single letter grade. (By overwhelming, I mean over 80%.)
As you might expect, the EPA seems to favor the sticker that car buyers hate. And perhaps for similar reasons. The "P" in EPA does stand for protection, after all. So the EPA does have an advocacy role. If car buyers would prefer to just have the facts and be left to make their own decisions, the EPA would much prefer to push you toward a more fuel and emissions efficient decision.
My preference is still for the more clear sticker. (Design number 2.) There are better ways to influence car buyers than dumbing down the presentation of information.
Incidentally, you can read the entire letter here.