You're still cheaper than here in Illinois ....
Sorry, as of July 2018 Indiana now ranks #8 in state taxes for gasoline, Illinois is #10. The tax and spend rhinos in Indiana also included an annual increase in the bill as well as funding study to turn all Indiana Interstates into toll roads starting with I-65 as soon as possible.
They are doing their best to make sure Indiana becomes blue.
I do feel for you in Illinois, because Pritzker is on the way. Whatever integrity is left in Illinois politics are gone, much like the rhinos in Indiana are achieving.