This is one of those things that always polls like 90% that Americans want less polluting and more efficient vehicles.
I mean if there was a presidency that tried to array itself more comprehensively against the policy wishes of the electorate I could not name it.
Depends on how the poll is worded. If you only ask if they want less polluting, more efficient vehicles, it's a worthless poll unless you seriously expect the average person to recognize the trade-offs made to accomplish this.
If you also ask them, do you want vehicles to cost thousands of dollars more, both to purchase and repair, how do you think they would answer that?
If that wasn't a major problem, automakers would have voluntarily had higher fuel economy all along, if nothing else just to make the sale because it makes them more competitive.
It's pretty clear that Americans don't want less polluting and more efficient vehicles based on their moving preference towards SUVs and pickup trucks, but since they cost more (all else equal) they want them cheaper, without sacrificing reliability.
So no, what you implied is wrong. The majority of well informed customers do not want goverment to force upon the people what the people do not want. If this is what the people want then let the buyers decide through their purchase.
Let the market sort it out without government intervention. Besides, an intelligent person recognizes that the Obama era fuel economy standards simply aren't possible for ICE vehicles. The result would just be fining automakers for lower fuel economy then that cost gets passed on to consumers and government has more money to waste.
The US isn't ready to switch 100% to EVs, so there needs to be a sane middle ground that isn't mandated by people who believe in unicorns instead of engineers and mechanics who recognize the problems.