No, not as standard yet, although since early 2023 this has started to change with some providers including GPS sat-nav in certain vehicles. Check when booking your vehicle. You can also opt to hire a GPS unit. Budget no longer rent our GPS units in Australia and New Zealand.
Exploring areas in which you’re not familiar is one of the fun things you can do on your trip. On the other hand, getting lost in remote areas is not. A GPS unit might be the tool you need to enjoy the former and avoid the latter.