Hertz offers a status match program as a way to obtain Five Star and President's Circle status. You must have status with one of the following competing programs:
Avis Preferred
National Emerald Club
To request a match, first enroll in Hertz Gold Plus Rewards:
http://www.hertz.com/rentacar/member/enrollment
Then send an email to Hertzstatusmatch@hertz.com. You must include proof of identity and a scanned image showing proof of your status with Avis or National.
Full details of the offer are here:
https://offer.hertz.com/offers/index.jsp?targetPage=TierStatusMatch.jsp