Healthy sales gains for Honda Motor Co. Ltd.'s most popular vehicles helped its U.S. sales grow 6 percent in June, capping a turnaround first half for the Japanese automaker.

The company's Torrance, California based American Honda Motor Co. sales arm reported sales of 106,627 vehicles last month, up from 100,420 the same month a year ago.

The company's flagship division reported a 4% sales gain with 95,788 vehicles sold, while sales of its luxury Acura-division models soared 31 percent to 10,839.

Honda's Civic and Marysville-made Accord models each reported sales of…