The only problem I had with paying cash was that I still had to be approved. I told the finance guy that I'd just write a check. He said they couldn't know if the check would clear so I still had to be approved. I told him I'd write the check and wait until it cleared, as I wasn't in a rush. He said he couldn't do that. Irritated the bejeebus outta me, but I didn't have any choice so I got approved - to pay cash.
This was Subaru after covid was largely past, and they had cars or could get them in a month or two.