AutoNation January Sales Up 7% From Last YearAutoNation, America’s largest automotive retailer, reports that retail new-vehicle sales for January, 2012, versus January, 2011were up 7 percent overall for the month. Sales increased 4 percent for domestic brands, to 4,894 units, increased 9 percent for import brands, to 8,097 units, and up 8 percent for premium luxury brands to 2,975 units sold for a combined total of 15,966 altogether.