Book Cheap Key'n Go Car Rental Deals in Santos, Lisbon, Portugal

If you plan to drive off-road, confirm with the rental agency whether it's permitted. Not all vehicles are suited for off-road conditions.

If you plan to have someone else drive, check if the rental company permits a second driver and whether there are extra fees involved. Some may offer free additional drivers under specific conditions.

Some rentals have mileage limits, while others provide unlimited mileage. Review these policies carefully to avoid unexpected charges.

Research any toll roads on your travel route and understand the payment options. Some rental companies provide toll transponders for convenience.

Before traveling, familiarize yourself with local driving laws and regulations. This can help you avoid fines and ensure a safe driving experience.

Some companies may provide a complimentary tank of fuel with your rental. Understand the conditions, such as how much fuel you need to return with to avoid fees.

When renting a car, understand the fuel policy. A 'Full-to-Full' policy means you return the car with a full tank, while 'Same-to-Same' means you return it with the same level of fuel. Full-to-Full is often more cost-effective.

Check if the rental company provides extras such as GPS devices or child seats. These can enhance your experience but may come with added fees, so plan accordingly.