Indiana diesel prices today
Indiana diesel prices todayDiesel averages $6.80 a gallon in Indiana on 2 October 2026 — the 5th most expensive of 51 states, and down $0.11 on the week.
Indiana against the other states
$0.44 a gallon above the unweighted mean of AAA's 51 state averages ($6.36). The cheapest diesel is in Texas at $5.79, the dearest in California at $8.38.
Regular gas in Indiana is $3.79, so diesel costs $3.01 more per gallon — and more than premium at $4.92.
Tax on a gallon of diesel
$0.24 federal + $0.59 Indiana · 4th highest of 51. The rest — about $5.97 — is the fuel itself, refining, distribution and the retailer’s margin.
Rates as of 1 January 2026. Local taxes, where they apply, are not included.
Diesel prices by city in Indiana
AAA's diesel averages for 15 Indiana metro areas, cheapest first — $0.24 a gallon between the two ends.
| Metro area | Diesel | vs state |
|---|---|---|
| Evansville | $6.66 | −$0.14 |
| Terre Haute | $6.68 | −$0.12 |
| Michigan City & La Porte | $6.72 | −$0.08 |
| Clarksville | $6.73 | −$0.08 |
| Gary | $6.75 | −$0.05 |
| Dearborn, Franklin, Ohio & Union Counties | $6.75 | −$0.05 |
| Muncie | $6.78 | −$0.02 |
| Lafayette | $6.80 | −$0.00 |
| Elkhart | $6.80 | +$0.00 |
| Fort Wayne | $6.81 | +$0.00 |
| Indianapolis | $6.87 | +$0.06 |
| Kokomo | $6.87 | +$0.07 |
| Columbus | $6.87 | +$0.07 |
| South Bend | $6.88 | +$0.08 |
| Bloomington | $6.90 | +$0.10 |
Show the data as a table
What a diesel fill-up costs in Indiana
- Diesel car or SUV — 18 gal$122.44
- Heavy-duty pickup — 34 gal$231.27
- Box truck — 60 gal$408.12
- Semi truck, two tanks — 250 gal$1,700.50
Diesel in neighbouring states
More for Indiana
Frequently asked questions
How much is diesel in Indiana today?
$6.80 a gallon, AAA's Indiana average for 2 October 2026 — the 5th most expensive of 51 states. Regular gasoline is $3.79, so diesel costs $3.01 more per gallon.
Are diesel prices going up in Indiana?
Diesel is down $0.11 (1.6%) on a week ago, and up $2.95 on a year ago, when it was $3.85, on AAA's own earlier averages.
Where is diesel cheapest in Indiana?
Of the 15 metro areas AAA reports in Indiana, Evansville has the cheapest diesel at $6.66 a gallon and Bloomington the dearest at $6.90. Individual stations vary around these averages.
How much is the diesel tax in Indiana?
$0.83 a gallon: $0.24 federal plus $0.59 in Indiana state taxes and fees, the 4th highest of 51. The state average is $0.36. Rates as of 1 January 2026.
Is diesel cheaper in a neighbouring state?
Yes — Kentucky ($6.23, $0.57 less), Ohio ($6.63, $0.17 less), Michigan ($6.66, $0.14 less), Illinois ($6.72, $0.08 less). On a 100-gallon fill that is up to $57.10; whether it is worth the drive depends on how far the border is.