By comparison, Mercedes says industry-wide sales fell 8.6 percent during the month.
Mercedes said Tuesday it sold 24,783 cars in North America in January, nearly ten percent more than a year earlier and twice as many as it delivered to customers in Germany during the same month. Sales in China grew more than 15 percent to 16,695.
The subcompact Smart, which is counted separately, sold 7,285 units, down from 7,605 a year earlier.
Mercedes-Benz is the flagship division of Stuttgart-based Daimler AG, which also makes trucks and buses.