Nissan Versa: A sedan for the frugal, Versa's stingy fuel consumption earns it an EPA rating of 26 mpg in the city and 34 mpg on the highway. A five-speed manual transmission ushers the 1.6-liter four-cylinder engine's 107 horsepower to the front wheels. Its relatively roomy back seat is a major attraction in this segment; otherwise, its cabin is devoid of frills.