Most car rental companies in Patras require a credit card for renting a car. This is because a credit card provides a form of security and allows for payment of any additional charges or damages that may occur during the rental period.

When renting a car in Patras, you will typically need to provide the following documents:

• A valid driver's license from your home country or an International Driving Permit (IDP)
• A valid passport or ID card
• A valid credit card in the driver's name
• Proof of insurance or the ability to purchase insurance from the rental company

While some car rental companies in Patras may accept debit cards, it is generally more common for them to require a credit card. Credit cards provide a form of security for the rental company and allow for any additional charges or damages to be billed to the card. It's best to check with the specific rental company for their accepted forms of payment.

Additional fees may apply when renting a car in Patras. Some common fees include:

• Airport surcharge
• Young driver fee for drivers under a certain age
• Additional driver fee for adding extra drivers to the rental agreement
• One-way rental fee if you drop off the car at a different location
• Fuel charges if the car is not returned with a full tank

The cancellation policy for car rentals in Patras can vary depending on the rental company and the booking platform used. Generally, there may be a cancellation fee if you cancel within a certain time frame, such as 24 hours before the scheduled pick-up time. It's important to review the specific terms and conditions of your reservation for the cancellation policy.

When renting a car in Patras, you may have several insurance options available, including:

• Collision Damage Waiver (CDW)
• Theft Protection (TP)
• Supplemental Liability Insurance (SLI)
• Personal Accident Insurance (PAI)

Crossing the border with a rental car from Patras may be possible, but it is important to check with the specific car rental company about their policy regarding crossing international borders. Some rental companies may require additional insurance or have restrictions on crossing certain borders. It's best to inform the rental company about your travel plans and confirm any applicable fees or requirements.