The ability to extend a car rental and the process for doing so can vary depending on the rental company's policies and availability. Here are some general guidelines on extending a car rental:

1. Early Communication: If you anticipate that you'll need to extend your rental, it's best to contact the rental company as early as possible. This increases the chances of availability and allows you to plan accordingly.

2. Availability: Whether or not you can extend your rental may depend on the availability of the vehicle you're renting. If the car has not been reserved by someone else for the additional period you need, extending should be relatively straightforward.

3. Contact the Rental Company: Reach out to the rental company's customer service or the local rental office. You can usually find their contact information on your rental agreement or the company's website. Inform them of your intention to extend the rental and provide details about how long you want to extend it for.

4. Payment: Be prepared to pay for the additional rental period. The rental company will inform you of the cost and any applicable fees for the extension.

5. Paperwork: You may need to sign a new rental agreement or an extension agreement to formalize the extended rental period. Review the terms and conditions carefully.

6. Insurance: Ensure that your insurance coverage, whether through the rental company or your personal policy, extends to the new rental period. Discuss this with the rental company if necessary.

7. Return Location: Confirm where and when you should return the vehicle after the extended rental period.

8. Late Return: If you don't arrange for an extension and return the vehicle late, you could be charged additional fees, including late return fees or even penalties for breach of contract. It's best to avoid this by arranging for an extension in advance.

Yes but you need to inform us a few days before!