My new 2013 XF SCV8 has a very weird gas gauge.

I fill it up and the gauge reads full. But within 20 miles, it is already dropping off full.

My 2010 was not that way. It would stay on full for 50 or so miles.

Anybody else have a gauge that "works" that fast off of full?

 

My 2012 does the same thing...At about half full gauge indication, my tank is only down about 7 gallons...I actually like it this way, so I always have more than indicated..Rather than have it the other way around..