Member Bill10562 is showing a 2020 Honda Ridgeline with fill-ups dating back to 2017. Fuelly is using this incorrect data in its calculation. I've tried contacting him, but got no response. I've also reported the page a couple of times.
Looks like another user confused how fuelly works, I'm seeing a worse tank of 1.58 MPG, which is obviously bogus. Unfortunately it's pretty common, if the report button isn't working, I'm not sure what else to suggest to be honest.