Like death and taxes, high gas prices have become an inescapable fact of life in this country. As a result, more and more American car buyers are making fuel economy a consideration when choosing vehicles. With those folks in mind, we've compiled a list of the 10 most fuel-efficient cars currently sold in the U.S.

Rankings were determined using the Environmental Protection Agency's (EPA) miles-per-gallon ratings for city and highway travel. More specifically, we tapped the EPA's combined fuel economy formula: 55 percent of city mpg rating plus 45 percent of highway mpg rating. The rating for each vehicle below is expressed in mpg as a city/highway ratio. All ratings apply to base models equipped with a manual transmission, except where indicated otherwise with an asterisk.

Each model was allowed only one appearance on the list. The sole exception is the Honda Civic, which appears twice as a result of being available in both gas-electric hybrid and regular gasoline versions.

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