Fuel gauge is off?
 

Hey guys, I got my 2016 Scion iA in November of 2015, and ever since then I would fill my tank and it will tell me I have about 250 miles range.

Yesterday I had to change the battery for the first time and all of a sudden I filled up and now it is saying I have 460. Then it jumps around a bit. Will start at 460, go quickly down to 400 then back up to like 420. Bar stays full.. Anyone know of a way to fix this issue?