Out of all the popular cities in Turkey, Istanbul is the cheapest city to hire a car in at just $25/day. Renting a car in Istanbul is 72% cheaper than renting one in Denizli where the per day rate is around $86. Other fairly inexpensive cities in Turkey to get a car hire in are: Bodrum ($37/day), Dalaman ($40/day), and Antalya ($45/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 $25/day on their transportation. The most popular city to rent a car in Turkey is Istanbul.