Far from trouble free.
Pros: When I went to pick up the car, the office was open but unoccupied. Waited 1/2 hour and made three calls before somebody showed up.
But there she upgraded us for no extra charge she also added two additional drivers without charge because I have elite status. But I was charged anyway. It took three emails to get those charges reversed.
We picked up the vehicle in Oslo and returned it to Kristiansand. They charged NOK 1,500 for that (c. $180) I knew that when I reserved the cart, but I still think it's outrageous.
Tools are collected automatically in Norway and Hertz added those charges to there invoice. But what they never warned me is that they added an administrative chargev that equalised the tolls.