Book Cheap Sixt Car Hire Deals in Santos, Lisbon, Portugal

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.

If you're looking for extra comfort or features, ask about upgrade options at the rental counter. Often, discounted upgrades are available at pickup.

To evade additional charges, return the rental car on schedule. Familiarize yourself with the agreed return time to prevent any surprises.

Make sure you know the details of the roadside assistance included with your rental. This is crucial in case of breakdowns or accidents.

Before you return the vehicle, clarify the return procedures with the rental agency. Knowing where to drop off the car and any required inspections can make the process easier.

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.

Before booking, review the rental agreement for any hidden fees such as airport surcharges, additional driver fees, or late return penalties. Understanding these can help you budget more effectively.

Always keep your rental agreement, identification, and insurance information easily accessible during your rental period. This can help resolve any issues quickly.