The 2012 Mitsubishi Eclipse Spyder is available as a 2-door, 4-seat convertible. Starting at $27,999, the 2012 Mitsubishi Eclipse Spyder GS Sport 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 27-mpg on the highway. The top of the line 2012 Mitsubishi Eclipse Spyder SE, priced at $28,299, 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 27-mpg on the highway.