Distance to empty miles keeps getting lower every time I fill up I dont know why

What is your question?

Distance to empty keeps getting lower every time I fill up. In the beginning it says 380mi sometimes 400mi to empty. However, it keeps getting lower, no it only says 300 or 320 to empty. It is a Jeep Wrangler 2016 S sport unlimited Sahara 4 doors. Can anybody tell me why thanks

What makes this problem better or worse?

It just getting lower

How long has your 2016 Jeep Wrangler had this problem?

It happens in this year