Book Cheap Sixt Car Hire Deals in Castellana, Madrid, Spain

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.

When renting a car, it's crucial to understand the different insurance options available. Selecting the right insurance can protect your finances in case of an accident. Common options include Collision Damage Waiver (CDW) and liability insurance, so make sure to confirm the required coverage with the provider.

Before departing, check the interior of the rental car for cleanliness and any functional issues. Ensure equipment like the radio and air conditioning works properly.

Before you finalize your booking, see if the rental agency offers free cancellation. This can be helpful if your travel plans change unexpectedly.

Many rental companies require payment by credit card and may not accept debit cards. If you only have a debit card, check the rental company's payment policies in advance and look for suitable options.

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

Before your trip, confirm if your rental includes roadside assistance. This can be crucial in case of breakdowns or emergencies during your rental period.

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.