The data indicates that for the Mercedes-Benz C-Class (2014-19) C220 5DR Estate 2.1D DPFR SS 170 EU6 SPORT PREMIUM PLUS 9G-T+ Auto, all vehicles are equipped with a 2.143-liter engine, and 100% of the sample vehicles use diesel fuel. This suggests that the model predominantly features a diesel engine, aligning with its designation as a 2.1D variant, and illustrates a uniform fuel type among these vehicles.