If you don't have a driver's license issued in Ecuador, then you'll likely need to get an International Driving Permit (IDP) in your home country to be allowed to rent a car. It's also important to note that if an IDP is required, it won't be valid on its own. You'll have to show your current driver's license your passport and other forms of documentation as well. Lastly, it's important that the credit card you used to book the rental matches the name on your license and passport. Some additional requirements for international car rentals are:

• Age restrictions: You need to be 25 or older in many countries to rent a car. If you're younger, it may still be possible to rent a car but you'll have to pay a Young Driver's Surcharge. Additional restrictions may also apply to what kinds of cars you can rent.
• Driving limitations: Make sure you read the rules and regulations before getting behind the wheel. You typically can't cross country borders, drive on ferries or on off-road areas with a rental car.