Get new car value at used car prices with the Mercedes-Benz C-Class in GILBERT. This car is only three years old! How much does the 2015 Mercedes-Benz C-Class cost? $28,991 With only 44,075 miles, it has plenty of life left in the tank. Its a 4-Cylinder Black car that makes commuting to and from work a little less stressful. Contact Mercedes -Benz of Gilbert to learn more about the 2015 Mercedes-Benz C-Class.