Out of all the popular cities in South Africa, Johannesburg is the cheapest city to rent a car in at just S$ 22/day. Renting a car in Johannesburg is 63% cheaper than renting one in Nelspruit where the per day rate is around S$ 58. Other fairly inexpensive cities in South Africa to get a rental car in are: Cape Town (S$ 24/day), Port Elizabeth (S$ 51/day), and Nelspruit (S$ 58/day). While these cities typically have cheaper prices than the rest of the country, travellers looking to rent a car in Cape Town should expect to spend around S$ 24/day on their transportation. The most popular city to rent a car in South Africa is Cape Town.