I've always had the issue where the last light didn't light up every now and then. It started a little after a couple hundred miles but didn't really pay it any attention. Here lately though (over 2yrs laters) the gauge seems to have a mind of its own. I'll be at half a tank and drive about 10 miles, look back down and it'll be a dot or 2 over half a tank. It's really frustrating when it shows I have a quarter tank and I think I can make it to a cheaper station 30 miles away. I'll be cruising along, look down and my low fuel light will be on and the miles till empty will rapidly decrease.
Guess I need to have the fuel senders replaced...