Figure you could be losing two to three miles per gallon of gas if you accelerate hard or brake abruptly. So drive smoothly.

Even more important -driving 55. Tests in a Toyota Camry at 65 miles per hour cut fuel efficiency by five miles per gallon. Traveling even faster, at 75, tester lost another five miles per gallon. That's ten miles less per gallon of gas! That can add up.

And don't forget where the rubber meets the road. Replacing tires with ones that are highly rated by Consumer Reports and have a low rolling resistance can save you more than a hundred dollars a year.

And while a car-top carrier is handy one you're done with it, remove it. That will help you save on gas, too.

Consumer Reports says other ways to save money on gas, skip premium fuel if you can. Your owner's manual should tell you. And be sure to check your tires one a month, because properly inflated tires deliver the best gas mileage.