The number of sales in Miami-Dade County's luxury car market increased more than 30% from mid-July to mid-September compared to the same period last year. About 31% more near-luxury car sales were reported this past report period compared to a year before, with the BMW 3 Series topping the list yet again, according to a market report by Dominion Dealer Solutions, a Virginia-based firm that tracks auto dealership sales nationwide.