You can potentially save up to 13% on a month-long rental by booking with Sixt. Sixt is the cheapest rental company available within the next few months. Renting a car at Olbia Costa Smeralda Airport can cost you on average ₹ 474,754 a month or ₹ 15,825 a day. For extended stays in a location, this option will usually save you the most.