Mazda North American Operations (MNAO) today announced U.S. sales of 22,476 units for the month of August. Overall, Mazda's year-to-date sales total is 171,646, 2.4 percent over the 1999 year-to-date figure. Mazda North American Operations is responsible for the sales and marketing, customer parts and services support of Mazda vehicles in the United States. Headquartered in Irvine, Calif., MNAO has more than 750 dealerships nationwide and is owned by Mazda Motor Corporation, Hiroshima, Japan.