I've got a 2019 Subie Outback and the AEB is pretty good. It really only engages in very tight circumstances above a certain speed (and probably only lower than a certain speed) i.e. I'm pretty sure it will let me rear-end something if I'm crawling slowly enough. Prior to enaging AEB, the beeping is very loud with a very short interval.
(I traded in my 2017 Tesla Model S to get the Outback and I've never regretted it.)
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