The Hyundai Kia Automotive Group has topped one million in U.S. sales for the second consecutive year.

Hyundai Motor America estimated Thursday that it sold 50-thousand-271 cars last month, putting total sales during the first ten months of the year at roughly 590-thousand.

Kia Motors Corporation sold around 42-thousand cars last month, putting the total sales for this year at around 477-thousand.

Combined sales of Hyundai and Kia cars between January and October stood at little over one million.

However, concerns have emerged since Hyundai Motor’s sales in the U.S. last month fell four percent compared to October of last year when around 52-thousand cars were sold.