The Citroen C4 and C6 models were designed to replace the Citroen Type A 10 hp and Citroen Type B model family cars. The styling of the two models was said to be heavily influenced by American counterparts of the same time period, however in France the new model was considered just that: new. The traditional grill styles of previous Citroen models were abandoned and a sleeker, flatter grill was used. There were numerous options in terms of body styles, including a particularly popular commercial line. These nameplates were later used for the Citroen C4 and the Citroen C6 in the 21st century, although being classified into the different class.