The 2010 Jeep Liberty is available as a 4-door, 5-seat sport utility. Starting at $23,255, the 2010 Jeep Liberty Sport 4x2 is powered by a 3.7L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 22-mpg on the highway. The top of the line 2010 Jeep Liberty Renegade 4x4, priced at $27,860, is powered by a 3.7L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 21-mpg on the highway.