I have a 2010 GT500 (50K) and cleaned my cowl drains twice so far when I noticed water on my floor - this was the issue both times and it fixes the problem.

However I have another issue that I noticed for quite a while and I was wondering if it is common on all Mustangs of this style or just mine. After a rainstorm or heavy car wash, I notice that when I open my door (not sure about the pass door) I have water that drains out to the ground. No water is getting in the car but it is sitting...

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