Gas Mileage Calculations: Why MPG Numbers Really Matter

Gas mileage calculations have recently changed to more accurately reflect real-world mpg. Here’s what you need to know about the new math and how to improve your mpg, save money and reduce air pollution.

Whether gas prices rocket past $3 a gallon or level off to about $2 a gallon, keeping an eye on your fuel economy will help you save big bucks each year.
Whether gas prices rocket past $3 a gallon or level off to about $2 a gallon, keeping an eye on your fuel economy will help you save big bucks each year.
Photo by Istockphoto/Tim McCaig