Fuel policy Vehicles are hired out with a full tank which is charged for. They must be returned empty, no refund given. For rentals less than 3 days you must pay for the full tank, but if you return the tank full you get a refund - No refund if tank is not full though. Take car fill up with unleaded, beli frei, sans blomb the benzin vehicles, and with gasoline the disel and diesel cars.