[m6-lt1]

I had this on my driver door on my last 6th gen however I chalked it up to the driver door having had some form of repair done to it (according to the carfax and my paint gauge device). I had a body shop hit it with a wire wheel and paint over it. Fortunately it’s in the best location for a repair as no one ever looks down there and you don’t have to do any blending on adjacent panels.

Ever since this happened to me I now make it a habit to open all doors, hood and trunk to let any trapped water fall out so it doesn’t rust again. I bet lower mileage non daily driver cars are more susceptible to this as people wash them, only open the car door and pull them back into the garage for a day+ thus leaving trapped water in that area for an extended period of time.