Kia Motors America (KMA) today announced best-ever October sales of 37,690 units, a 21-percent increase over the same period last year and the company's 14th straight monthly sales record. One of the fastest growing car brands in the U.S., KMA's year-to-date sales are up 35 percent, and the brand has eclipsed the 400,000 vehicle sales mark for the first time in company history. The U.S.-built Sorento was once again the brand's best-selling vehicle with 10,178 units sold in October, while demand for the critically acclaimed Optima midsize sedan, which recently was added to the production line at Kia Motors Manufacturing Georgia (KMMG), remained strong with 8,616 units sold.