Out of all the popular cities in Turkey, Istanbul is the cheapest city to hire a car in at just $26/day. Renting a car in Istanbul is 72% cheaper than renting one in Denizli where the per day rate is around $90. Other fairly inexpensive cities in Turkey to get a car hire in are: Bodrum ($38/day), Dalaman ($41/day), and Antalya ($47/day). While these cities typically have cheaper prices than the rest of the country, travellers looking to hire a car in Istanbul should expect to spend around $26/day on their transportation. The most popular city to rent a car in Turkey is Istanbul.