Renting a car in Germany is a straightforward process, but it requires specific documentation and an understanding of local driving culture. You must be at least 18 years old (though many companies charge a "young driver" fee for those under 25) and possess a valid driver's license. If your license is from outside the EU/EEA, it is highly recommended (and sometimes legally required by the rental agency) to carry an International Driving Permit (IDP) alongside your original license. Major agencies like Sixt, Europcar, and Hertz are ubiquitous at airports and major train stations. When booking, be aware that the "default" car in Germany is often a manual transmission; if you can only drive an automatic, you must specify this and expect to pay a premium. Insurance is mandatory, and you should check if your credit card provides primary coverage to avoid the expensive "collision damage waiver" at the counter. Finally, always inspect the car for "battle scars" and ensure they are documented, as German agencies are famously meticulous about checking for new scratches upon return, especially on high-end vehicles.