In car rental, an additional driver can be any person who is registered and permitted to drive the rental car during the rental period in addition to the main driver. For registering an additional driver, most suppliers, such as Hertz and Alamo, charge an additional driver fee. However, some suppliers allow the main driver’s spouse and immediate family members to be registered as additional drivers for free.
As for rental conditions, additional drivers must meet the same requirements as the main driver. This includes the requirements regarding their driving licence and age. To be eligible to drive the rental car, the names of all additional drivers must be added to the rental agreement.
It is also important to note that all additional drivers must be approved by the car hire supplier.

Example sentence(s):
- You can add additional drivers to the rental agreement when you pick up the vehicle.
- Immediate family members can be registered as additional drivers free of charge.