imho necessary is very subjective - some will swear mats are essential. I really wanted rubber (or rubber-like) ones, ordered and received them before taking delivery (of course), and put them in as soon as I got home.Everyone seems to be buying floor mats for their Tesla Y’s. Are they really necessary?
I prefer not to see how the included mats would handle the dirt and mud I sometimes track in. But I'm sure many people get by with those, or maybe even no mats at all.