I haven't had the car that long and only put gas in it twice.. First time I let the "auto shutoff" handle stop it aqnd just put a little more in it to round up to the next even dollar. Result was a little over haqlf a tank.
Today was the second time and so this time I put it on the slowest pauto pump click and when it shut off I just kept "bumping it til it shut off again.. I did this several times..figured it was really full this time. Result 3/4 tank showing on fuel guage...this happen to anybody else?

 

See post #55 https://themustangsource.com/f813/se...496574/index3/

 

Thanks Gary....glad it's just not me!

 

I had the same problem with my 06 GT, and the Boss has yet to do it to me. I noticed that it happened more at a certain gas station too, so I just stopped going to that one. It didn't make the problem disappear entirely, but it made it happen way less frequently. I've put gas in my Boss 3 times now and haven't had a problem. A lot of times if you just wiggle the handle and move the spout a little, it will fix the problem and allow you to fill it all the way.

What I would suggest is to know how big the fuel tank is and just guesstimate how much you need to put in for it to be full. That way if you think you should have 11ish gallons going in, but the pump stops at 8...you know it shut off too soon. It's annoying, but it does save you from getting in just to realize you didn't actually fill your car up.

 

In case anyone is interested there is 1 gallon left when your computer says 0 miles to empty. Been there twice and had .9 and 1.1 left.