Contact: Reservations Customer Service Sales and Marketing department Travel agency Groups and Conventions Program Business Program Your Name: Your Email: Your Message: Email: info@nationalcar.com.mx Online reservation (International). Click here to reserve online now. Toll free number within México 01-800-716-6625 Toll free number from USA to reserve cars in Mexico 1-877-567-3572 First time users, will be prompted to accept a security certificate, if not accepted, you wont be able to initiate the call. The system is an automated process, if the call fails or is interrupted, close the window and click on the image above again.