How much is gas Mississippi to Miami?

The cost of filling up your vehicle would depend on the route you take, how many stops you make, if you drive over 60 mph (which reduces fuel-efficiency), and the fuel efficiency of your vehicle. The best way to calculate this would be to determine how many miles you will be driving, the current average cost of gas, and the miles per gallon of your vehicle. This way you will know what to expect when you pull up to the gas station in Miami!