I rented a GPS, and it was absolutely terrible. It never let us drive on the highway, even though I had set it to prefer highways over shorter routes. While driving properly on the highway, it would make us exit prematurely, always at toll stations, and no settings could fix this. It seemed like the default was set to a money-saving mode. This GPS made us take many detours, wasting a lot of time. On the first day, we arrived in another city at midnight because of it, and the hotel almost closed. It didn't recognize some roads and couldn't differentiate between one-way and two-way streets. The GPS was awful! Plus, it cost around 10 euros per day, which was completely not worth it and wasted our precious time and energy.