>I googled PZEV, and apparently all it means is that it isn't releasing gasoline vapours - other emissions don't matter.
No.
PZEV means partial zero-emotions vehicle… it is just STAR-STOP.
When you stop, the car shuts off and when it’s off it isn’t emitting anything. That is what it means.
It’s a total scam. Subaru was the first to put a logo on a US government mandated requirement (that made no sense).