I had the exact same spot have rust on my 2013 Edge Limited. Just bought it in July and didn't notice it until over a month later. Had a body shop clean it up and repaint it. Cost $400 cdn. I also had a tiny spot on the front drivers door just down near the bottom on the vertical lip. Nice to know I'm not the only one that has seen this. Might be something to watch out for on others. Really weird spot as it's sort of on a vertical and water shouldn't be sitting there. The body shop was able to clean it up without removing the door.
