The 2012 Mitsubishi Eclipse is available as a 2-door, 4-seat coupe. Starting at $19,499, the 2012 Mitsubishi Eclipse GS is powered by a 2.4L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 20-mpg in the city and 28-mpg on the highway. The top of the line 2012MitsubishiEclipseSE , priced at $ 24,699 , is powered by a 2.4L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 20-mpg in the city and 28-mpg on the highway.