Thanks for your advice, Paminaz! If I read correctly between the lines, you are working in the rental car business.

Lets just act as if I was having this issue in PHX and I was the guy standing in front of your counter: What would that cost me in PHX, processing fee plus fine?

I will return my car tomorrow and definitely talk to the station manager, but it would be nice to have a little more backup information.

BTW, I read a lot on the internet about the "driving record" of US citizens. Do I (as a non-US citizen without an US drivers license) have a driving record, too? Or is does it, in this case, settle the matter if I pay the fine that my come?

Sorry if many of these questions sound stupid, but if one is not familiar with the US system AND there is a rental car involved, all that is pretty confusing.