Renting and returning the car was easy, especially the return process, just hand over the keys and you're done.

The Europcar counter is located inside the Advantage store, but there was no staff present for a long time. Many people waited for quite some time only to find out that Europcar and Advantage process rentals together. It took over an hour to get served.

Deceptive

Because my English is not good, the counter staff made me sign five times without my knowledge and overcharged me $283.52. It was purely deceitful.

Disappointing that Europcar didn't have an easy way for the car to use Denver's toll roads in a simple "pay as you go" way. I.e Several of Europcar's competitors at Denver airport fit tags to their cars, so that you can use the toll roads and simply pay just for the individual trips you've taken at the end of the rental. Europcar/Advantage don't do this. The advice from the staff was simply "don't use the toll roads". This was rather inconvenient.