In many cases, the credit card you use will also cover rental insurance, or at least collision insurance. Check before you buy.

Rental rates are in 24 hour time-frames, keep this in mind when making your travel arrangements.

Look for Weekend Rates when traveling for 3 or less days or Weekly Rates for 5 or more days to get the best savings.

Bring your own child car seat instead of paying daily rental fees.

If you'll be arriving late in the day to your destination, consider staying at an airport hotel that offers free shuttle service and pick up your vehicle the next morning instead.