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I thought it was due to fuel standard requirements and loopholes between autos and light trucks like the F-150.

Cars and mid size SUVs all seem to be converging on the same shape with minor differences where as trucks still have some individuality.

So I went to check this supposition out and whew, I’m confused.

CAFE standards, harmonic means, compliance flexibility, offset credits are all more than I can wrap my head around from my smartphone.

Not to mention trying to read the actual CAFE regulation is very convoluted.

Anyways, I thought I had an answer for you but all I’ve got is a rabbit hole in crawling out of.

https://reason.org/e-brief/cafe-standards-in-plain-english/



I liked this line in that article:

"For example, Ford sells both the Focus, a mid-size car that gets 31 mpg on highways, and the F-150, a midsize truck that gets 25 mpg on highways."

I mean, just think about how similar those numbers are given the vehicles. Pretty wild.




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