What is required for international license?
Hereof, what countries require international drivers license?
International Driving Permits are Required* in the following countries for US Licensed Drivers: Austria, Bosnia-Herzegovina, Croatia, the Czech Republic, Germany, Greece, Hungary, Italy, Poland, Romania, Slovenia, Slovakia, and Spain. *IDP enforcement may vary based upon car rental supplier as well as renting country.
Regarding this, do I need an international driver's license in Europe?
Passports, Driver's Licenses, and International Driving Permits. Whether you're American or Canadian, your passport and driver's license are all you need in most European countries. However, some countries also require an International Driving Permit (IDP).
International Driving Permit However, in Germany you don't need an IDP for a license in English, and the rental car agency only wants to see your US or Canadian driver's license. If you plan to drive a lot outside of Germany, you may still want to get an IDP, which is valid in over 150 countries.