What are minimum requirements for private party auto loan?

The answer is hard to find online. Some suggest at least $10000 loaned, or subject car must be only 4 or 5 years old, or max 48 months repayment term, etc. I realize there will be some variables, but there must be some standards here. While we're at it, are there standards for how high your credit must be to get a private party auto loan?

What are minimum requirements for private party auto loan?
I don't think that there are any regulations that govern private party loans. As long as the buyer and the seller are in agreement with the terms and both parties sign the paperwork agreeing to same, the terms can be whatever the two of you agree upon.