I was under the assumption that only Prestige and Fun collection cars were excluded. I am under 25 and rented a minivan before, and on my last trip I was offered an Explorer, Expedition, Sienna, Solara convertible, and a Town Car - as you can see, that's a big spread and more than enough to choose from. I took the Explorer but I could have taken the Premium car if I wanted.

As far as the under age fee, I don't think there's a valid argument for that. It's clearly spelled out and perhaps you were lucky before.. I joined with the Hertz Gold Family CDP so the underage fee is waived for me.