From BMW Group PressClub USA:

MINI USA reported sales of 3,950 automobiles, a decrease of 5.4 percent from the 4,176 cars sold last year.  Year-to-date, MINI USA also reported sales of 38,538 automobiles, a decrease of 1.6 percent from the 39,172 units sold in the same period of 2009.

October 2010 October 2009 change year-to-date 2010 year-to-date 2009 change
3,950 4,176 -5.4% 38,538 39,172 -1.6%

See MINI sales in the USA by month.