Tennessee diesel prices today
Tennessee diesel prices todayDiesel averages $6.07 a gallon in Tennessee on 2 October 2026 — the 38th most expensive of 51 states, and down $0.11 on the week.
Tennessee against the other states
$0.29 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 Tennessee is $3.96, so diesel costs $2.12 more per gallon — and more than premium at $4.82.
Tax on a gallon of diesel
$0.24 federal + $0.28 Tennessee · 37th highest of 51. The rest — about $5.55 — 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 Tennessee
AAA's diesel averages for 10 Tennessee metro areas, cheapest first — $0.29 a gallon between the two ends.
| Metro area | Diesel | vs state |
|---|---|---|
| Chattanooga | $5.86 | −$0.22 |
| Cleveland | $5.95 | −$0.12 |
| Johnson City | $6.00 | −$0.08 |
| Clarksville | $6.01 | −$0.07 |
| Morristown | $6.01 | −$0.06 |
| Kingsport & Bristol | $6.02 | −$0.05 |
| Knoxville | $6.08 | +$0.01 |
| Jackson | $6.11 | +$0.03 |
| Nashville | $6.15 | +$0.07 |
| Memphis | $6.15 | +$0.07 |
Show the data as a table
What a diesel fill-up costs in Tennessee
- Diesel car or SUV — 18 gal$109.31
- Heavy-duty pickup — 34 gal$206.48
- Box truck — 60 gal$364.38
- Semi truck, two tanks — 250 gal$1,518.25
Diesel in neighbouring states
More for Tennessee
Frequently asked questions
How much is diesel in Tennessee today?
$6.07 a gallon, AAA's Tennessee average for 2 October 2026 — the 38th most expensive of 51 states. Regular gasoline is $3.96, so diesel costs $2.12 more per gallon.
Are diesel prices going up in Tennessee?
Diesel is down $0.11 (1.8%) on a week ago, and up $2.65 on a year ago, when it was $3.42, on AAA's own earlier averages.
Where is diesel cheapest in Tennessee?
Of the 10 metro areas AAA reports in Tennessee, Chattanooga has the cheapest diesel at $5.86 a gallon and Memphis the dearest at $6.15. Individual stations vary around these averages.
How much is the diesel tax in Tennessee?
$0.52 a gallon: $0.24 federal plus $0.28 in Tennessee state taxes and fees, the 37th highest of 51. The state average is $0.36. Rates as of 1 January 2026.
Is diesel cheaper in a neighbouring state?
Yes — Georgia ($5.92, $0.16 less), Mississippi ($5.95, $0.12 less), Arkansas ($6.01, $0.06 less), Alabama ($6.02, $0.05 less), North Carolina ($6.06, $0.02 less). On a 100-gallon fill that is up to $15.70; whether it is worth the drive depends on how far the border is.