The '21 2.0 does not require Premium, thus partly why they have gone more broad on its use. That said, I believe it is the same XT4 2.0L Turbo engine that has had some people miffed about cylinder shutoff and a failure to shift into top gear. I have already seen a couple comments from new '21 Envision owners on that. The old 2.0, Premium gas and all, at least mated to the 9 speed pretty well.