Just returned the car I booked through AutoEurope, delivered by Hertz at CDG. They informed me that there would be a €60 charge. When I asked why, it turns out that they wrote in the small print on my voucher that there would be a €40 “airport surcharge” and then €3 per day tax.
Of course, nobody mentioned this when I picked up the car. It’s a blatant scam.
Avoid AutoEurope like the plague, and be especially careful if you see the name Dollar or Hertz anywhere on the rental. They clearly participate in this scam with their policy of charging “fees” only upon vehicle return.