The 2015 Honda Civic is available as a 2-door, 5-seat coupe. Starting at $18,490, the 2015 Honda Civic LX (M5) Sedan is powered by a 1.8L, 4-cylinder engine mated to a manual transmission that returns an EPA estimated 28-mpg in the city and 36-mpg on the highway. The top of the line 2015 Honda Civic Natural Gas With Navigation (A5) Sedan, priced at $29,390, is powered by a 1.8L, 4-cylinder engine mated to an automatic transmission that returns an EPA estimated 27-mpg in the city and 38-mpg on the highway.