To win its first title as best-selling luxury brand in the United States.Wholesale Electronics BMW said today that U.S. sales rose 15 percent to 26,834 in December, for an annual total of 247,907. Mercedes said its sales last month climbed 28 percent to 25,701, Car Electronics pushing its tally for the year to 245,192. The results officially end Lexus' Car Vidio Players 11-year reign atop the U.S. luxury rankings. The Toyota Motor Corp. brand reeled after the March earthquake in Japan disrupted production, Car Lamps finishing the year down 13 percent at 198,552.