When renting a car in Puerto Rico, you can add additional drivers, but there are specific policies to follow. Most rental companies allow you to add extra drivers, but each additional driver must meet the same rental requirements, including age and a valid driver’s license. Typically, there is an extra fee for each additional driver, which varies by company. For example, if you and a friend want to drive the rental car, your friend must be listed on the rental agreement and may have to pay an additional daily fee.