Could be, just got a little nervous today on my first drive after sometimes. got to quarter of a tank did about 15 miles and was almost empty! Put in half a tank, then the needle seemed to keep rising.From what I remember the fuel gauge in mine was all over the place. Almost 2/3rds of the tank were empty and it was still showing north of half. And after half it went woosh to the red.
Maybe this is your issue?