I have a 2012 4 runner since the last to times we have filled up it always says 400 something miles till empty but last two times we have filled up its says 384 what's up with that and is there a problem

 

Never heard that before, prehaps checking the owners manual. It might be something stupid they put in there to get you to buy more tune-up items. OR it might just be the pump your using now. You could always reset the ECU and get 400 again eheh