Compact cars are the most popular rental car type in South Australia. And if you're considering spending a lot of time traveling around the bustling streets of Adelaide or Mount Gambier, you'll quickly learn why. Swap that lumbering full-size car for something cool and compact --- parking is a piece of cake and they're a pleasure to drive!That said, South Australia boasts some incredible cliffs, sandy shores, and desert landscapes. It would be a shame not to leave the city to see these striking scenes. If that sounds like something you want to do, rent an SUV or a full-size car. Even if you don't intend to steer off the beaten track, you'll welcome the extra legroom.