Tried to search if there was something to fix this.

When i fill up the tank, the pump stops around 10 gallons which on the gauge reads 3/4 tank. The last time the reserve light was on, to give you an idea how much gas I had left.

I have to keep manually pulling the handle to get it to fill up more.

Any ideas? Btw how big is the tank?

16.6 gal fuel tank

pretty common problem; something to do with the tank ventilation I think? Many threads on it. If you hold the pump handle at a 90 degree angle or upside down it will allow you to continue to fill.

I had that problem on my car since I bought it, never really chased it down but when I replaced the fuel pump it now fills to the top instead of stopping early.

Yes, try rotating the nozzle. Weird, I believe it's a saddle type tank in this car so it's maybe just the one side filling and not allowing the transfer.

Also a weird 996 issue is if you let the gas go too low and only partially fill the tank, the sender fails to register the correct amount and will show still being empty on the dash.

Vent valve is going bad in the fender. Just went through this. Pump would stop early and eventually, you wont be able to add fuel at all.
It's a simple fix, takes less than an hour.

Part #: 996-201-143-01-M100

I read through a few different threads. My fuse is not blown and if i stick something metal in the spout I can hear the valve click. Not sure what troubleshooting you did on yours. Think it still is the valve?

I did the same thing. Fuse was fine and the valve clicked. It was still the VV.

Can't recall when now it first appeared but my 2003 Turbo manifested an early fuel nozzle shut off problem. Was rather inconsistent.

While I could add more fuel it was not possible to know for sure if the shut off was premature or because the tank was full. If the shut off was premature I can restart the fueling and most of the time get another 2 or 3 gallons of fuel in without any problems.

However, a few times I thought the shut off was premature so I added more fuel and the fuel overflowed.

It is a pain to have to run around to the driver side and open the door and insert the key and turn the key on to check the fuel level.

What I found results in the nozzle almost always *not* shutting off prematurely is to turn the fuel nozzle handle nearly upside down.

I do this automatically now and almost always the nozzle shuts of at just the right time. (Except today of course and because the amount was just 9 gallons I took the trouble to check the level and found it was full.)

If the nozzle shuts off and continuously shuts off as you try to add more fuel to a fuel tank that has room for more fuel that's another problem, one that I have not thankfully had to deal with.

Our fantastic vapor recovery pumps here in the People's Republik of Kalifornia are the main culprits.
I have exactly the same problem. Once the tank is about 3/4 full I have to fill very slowly. Some pumps are worse than others. I try to only use known "good" pumps when I can and avoid the "bad" ones at all costs.
One thing I have found that does help it to pull back the black ring on the pump that seals the top of the gas filler. There is an available Porsche part that effects the same thing, Part #: 997-201-944-00-OEM

That confused the **** out of me the first few times it happened before I knew what was going on.

It's discussed in the owner's manual - same problem with 997 too.

Note
If the tank is near empty and you top up with
only a small quantity of fuel, this cannot be registered
by the level gauge and calculation of the
range remaining is impossible.

Thanks, will give one of those rings a try first.

You can't fill the tank with fuel if it's filled with air. When you put the fuel nose in the filler neck, the valve needs to open to allow the air in the tank to escape. If the air can't escape, the fuel will stop flowing.
If everything is working properly, you don't need to do any tricks to get the fuel in the tank.
If you have to pull back, slow down the flow of fuel, spin the pump upside down or spin yourself upside down, something is wrong with the system that releases air out of your fuel tank. 99% it's the VV getting ready to fail on you.

The pressure cut off on the pumps here is crazy sensitive. I have no problem if I fill at 1/2 speed, but who wants to go 1/2 speed in a TT?

I see exactly the same issue being reported from CA owners of Jaguar XF's....

Who reads the owners manual???

Having the same problem! In CA as well...

I can only get 8 or 9 gallons in at a time. Not patient enough to go any further than that as the pump keeps clicking off...

I'll look in to replacing the valve.