Missouri diesel prices today
Missouri diesel prices todayDiesel averages $6.13 a gallon in Missouri on 2 October 2026 — the 33rd most expensive of 51 states, and down $0.18 on the week.
Missouri against the other states
$0.23 a gallon below 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 Missouri is $4.07, so diesel costs $2.06 more per gallon — and more than premium at $4.81.
Tax on a gallon of diesel
$0.24 federal + $0.30 Missouri · 30th highest of 51. The rest — about $5.59 — 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 Missouri
AAA's diesel averages for 8 Missouri metro areas, cheapest first — $0.45 a gallon between the two ends.
| Metro area | Diesel | vs state |
|---|---|---|
| Springfield | $5.86 | −$0.27 |
| Joplin | $5.89 | −$0.24 |
| St. Joseph | $6.04 | −$0.10 |
| Kansas City | $6.04 | −$0.09 |
| Cape Girardeau | $6.15 | +$0.01 |
| Columbia | $6.27 | +$0.14 |
| Jefferson City | $6.28 | +$0.15 |
| St. Louis | $6.31 | +$0.18 |
Show the data as a table
What a diesel fill-up costs in Missouri
- Diesel car or SUV — 18 gal$110.41
- Heavy-duty pickup — 34 gal$208.56
- Box truck — 60 gal$368.04
- Semi truck, two tanks — 250 gal$1,533.50
Diesel in neighbouring states
More for Missouri
Frequently asked questions
How much is diesel in Missouri today?
$6.13 a gallon, AAA's Missouri average for 2 October 2026 — the 33rd most expensive of 51 states. Regular gasoline is $4.07, so diesel costs $2.06 more per gallon.
Are diesel prices going up in Missouri?
Diesel is down $0.18 (2.8%) on a week ago, and up $2.74 on a year ago, when it was $3.39, on AAA's own earlier averages.
Where is diesel cheapest in Missouri?
Of the 8 metro areas AAA reports in Missouri, Springfield has the cheapest diesel at $5.86 a gallon and St. Louis the dearest at $6.31. Individual stations vary around these averages.
How much is the diesel tax in Missouri?
$0.54 a gallon: $0.24 federal plus $0.30 in Missouri state taxes and fees, the 30th highest of 51. The state average is $0.36. Rates as of 1 January 2026.
Is diesel cheaper in a neighbouring state?
Yes — Oklahoma ($5.86, $0.28 less), Arkansas ($6.01, $0.13 less), Nebraska ($6.05, $0.09 less), Tennessee ($6.07, $0.06 less), Kansas ($6.08, $0.05 less), Iowa ($6.09, $0.04 less). On a 100-gallon fill that is up to $27.70; whether it is worth the drive depends on how far the border is.