40,000 miles on my 2011 GT and I am getting an average of 19.3 around town with some spirited driving. If I let the wife drive it (mostly highway) she manages to get it up to 22 to 23. I have only seen 24 to 25 on the interstate.
-Ken 2011 5.0 Convertible 401a with Accessory Package 6 and 19" Wheels
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