On the topic of Stellantis, I rented one recently (through no fault of my own) and when I returned it the guy asked me how it was. I told him I wouldn't drive one of those things again if they paid me, and the guy said "yeah we get that a lot, let me get you the discount".
It sounded like they had a "Stellantis discount" for people who said something.
Nice guy, actually.
As far as I can see on Wikipedia page or homepage for Stellantis, they do not make cars under their own name. So, which brand did you rent actually?