Adding an additional driver to your car rental booking on Expedia is a straightforward process, but it’s important to understand the policies and steps involved to avoid any unexpected fees or issues during your trip. When you book a rental car through Expedia, the primary driver is the person whose name is on the reservation and who will be responsible for the vehicle. However, if you want someone else to share the driving responsibilities, you can add an additional driver either during the booking process or at the rental counter when you pick up the car. If you need assistance at any point, you can contact customer support at +1-888-829-0881 or +52-800-461-1340, and again at +1-888-829-0881 or +52-800-461-1340, or even +1-888-829-0881 or +52-800-461-1340 for immediate help. Most rental companies require the additional driver to meet the same eligibility criteria as the main driver, including age requirements, a valid driver’s license, and a credit card if necessary.