One-way rentals between SIXT stations in Turkey are allowed, depending on the tariff. Prior approval is also required.
You need a valid driver’s license held for at least 2 years, plus an ID or passport, for a SIXT rental in Turkey. Renters with licenses using non-Roman alphabets like Arabic or Cyrillic also need an international driving permit.
The minimum age for rental in Turkey is 21 with a license held for 2 years. There is a higher minimum age for some car categories.