Sales of Ford Edge, which arrived on the market in late 2006, hit 400,000 this past weekend, the highest sales volume of any midsize crossover vehicle during the same period, according to Ford.

As of July, Edge sales for the year were up 33% over last year—more than double the overall industry sales.

In 2006 when Edge was introduced, the midsize crossover segment accounted for 4.3% of the retail industry. Last year, that number grew to 9.5 and is expected to top 11% this year, making the segment the same size as full-size pickups and more than sports cars.

The 2011 Ford Edge SEL and Limited, which account for about 80% of all Edge sales, have EPA-estimated fuel economy of 19 mpg city and 27 mpg highway (front-wheel drive).