As a savvy traveler, I'm always looking for the cheapest ways to get around, and rental cars are no exception. From my experience, the best approach is to compare prices from various rental companies online, taking advantage of discount codes and promotions. Additionally, booking your rental car as part of a travel package can often lead to significant savings. Don't forget to consider renting from a local or independent company, as they may offer lower rates than the larger chains. Finally, renting the smallest car that meets your needs can save you money on both the rental fee and gas expenses.