The 2009 MINI Cooper S is available as a 2-door, 4-seat hatchback. Starting at $21,950, the 2009 MINI Cooper S Hatchback is powered by a 1.6L, 4-cylinder engine mated to a manual transmission that returns an EPA estimated 26-mpg in the city and 34-mpg on the highway. The top of the line 2009 MINI Cooper S Convertible, priced at $26,800, is powered by a 1.6L, 4-cylinder engine mated to a manual transmission that returns an EPA estimated 26-mpg in the city and 34-mpg on the highway.