No, but that's just the point. It's smart enough to know that at key-on, it has very little information about the actual fuel level, so it allows the needle to

No, but that's just the point. It's smart enough to know that at key-on, it has very little information about the actual fuel level, so it allows the needle to move rapidly. As it continues to operate, it gradually (probably over a few seconds) filters the fuel level measurement more, so you don't get rapid fluctuations while driving.