The 2008 MINI Cooper is available as a 2-door, 4-seat hatchback. Starting at $21,950, the 2008 MINI Cooper Convertible is powered by a 1.6L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 23-mpg in the city and 32-mpg on the highway. The top of the line 2008MINICooperHatchback , priced at $ 18,050 , is powered by a 1.6L , 4 - cylinder engine mated to a manual transmission that returns an EPA estimated 28-mpg in the city and 37-mpg on the highway.