Here are the Top Performing Car Dealerships, in the Most Populated Markets in the USA. The standings are based on calendar-month sales, which means sales recorded the 1st thru the last day of the month, and not “Sales Month” (which can include promotions that extend into the next month OR sales that started in the calendar month but finalized later on). This way we level the playing field to see how each dealership is doing in that particular month only. Only the dealerships that made the top 20 in their city make it to the list, but we also break it down by region as well. Note: These do not include Ford, BMW and Volkswagen brands. Galpin Ford in LA, a perennial sales juggernaut is not shown, but has sold as many as 1800 vehicles in a single month in the last 6 years.