Hertz reservation was messed up, and the local staff could not update it. International help support was barely competent. “Upgrade” to the type of car I had reserved was incredibly expensive. Finally, the car had broken windshield wipers, a 60% full gas tank, a tire pressure warning and summer tires despite being rented in Denver. In all of this, their local and international staff was spectacularly unhelpful. Given the above, I expect Hertz will try to charge me an extra several hundred dollars for some imagined issue with the car - they have not yet sent a receipt.