Ford Motor Co. My 2011Ford Mustng has a defective, gas guage and also if the car has been driven for a lot of miles, trip, have trouble getting gas to go in tank. Dearborn, Michigan

Okay first off you may or may not have a defective Gas Gauge, but how defective may really be the question.

Just about every gas gauge has some give and let's just say "querks".  I've had gagues that stayed at Full for well over 1/2 a tank, and then dropped like a rock toward empty.  I've had others where I could ride on "E" for another 100 miles.  You just have to figure out how your gauge works.  As having it drop after 1/4 tank is acutally not that uncommon and really nothing that they can fix.  It is just how the sensors are arranged in the tank.

The one thing in your report that you fail to mention is the actual MILES that you drive. 

You say that you have run out of gas twice, but then also state that the gauge was wrong when it said  you were out of gas...do you see the issue here?

You say that when you ran out of gas you were able to fill it up for a few dollars.  Okay so how does dollars convert to gallons?  If you thought it was truly full why did you not take it back to the dealer to have them take the gas out of your tank to see how much was truly in it? 

As for leaving a puddle EVERYTIME you fill up, it again sounds like you may be trying to put too much gas in the tank as(at least as far as I am aware and where I am from) gas pumps have an automatic shutoff that does not allow that to happen..unless YOU keep trying to get more in.

If your car is out of warranty now, not sure what could be done.  But you may need to start relying less on the gauge and more on how much you actually travel.  If you know you can go about 300 miles on a tank of gas, when you hit about 250 or so you probably should think about filling up again.