Out of all the popular cities in Tunisia, Tunis is the cheapest city to rent a car in at just $27/day. Renting a car in Tunis is 50% cheaper than renting one in Enfidha where the per day rate is around $54. Other fairly inexpensive cities in Tunisia to get a rental car in are: Monastir ($49/day), Houmt Souk ($52/day), and Enfidha ($54/day). While these cities typically have cheaper prices than the rest of the country, travelers looking to rent a car in Tunis should expect to spend around $27/day on their transportation. The most popular city to rent a car in Tunisia is Tunis.