The 2006 Mitsubishi Eclipse is available as a 2-door, 4-seat coupe. Starting at $19,399, the 2006 Mitsubishi Eclipse GS is powered by a 2.4L, 4-cylinder engine mated to a manual transmission that returns an EPA estimated 23-mpg in the city and 30-mpg on the highway. The top of the line 2006 Mitsubishi Eclipse GT, priced at $23,699, is powered by a 3.8L, 6-cylinder engine mated to a manual transmission that returns an EPA estimated 18-mpg in the city and 27-mpg on the highway.