How old must you be to rent a car?

The minimum age to rent a car in most countries is 25 years old, but this can vary depending on the country and the car rental company. Some companies may also require drivers under the age of 25 to pay a young driver surcharge. In some countries, such as the United States, some car rental companies may allow drivers as young as 18 to rent a car, but they may be subject to additional restrictions and fees. It's always best to check with the specific car rental company to confirm their age requirements and policies.