Gas prices in Tennessee today
Regular gas in Tennessee averages $3.83 a gallon, 10% less than the U.S. average of $4.27. That makes Tennessee one of the cheapest: rank 7 of 51 (1 = cheapest).
| Grade | Tennessee | U.S. average | 15-gallon fill-up |
|---|---|---|---|
| Regular | $3.83 | $4.27 | $57 |
| Mid-grade | $4.31 | $4.78 | $65 |
| Premium | $4.72 | $5.17 | $71 |
| Diesel | $5.97 | $6.35 | $90 |
Source: AAA, Tennessee average gas prices and AAA State Gas Price Averages, as of Oct 24, 2026. Fill-up = price × 15 gallons (our calculation). For metro-area prices, see AAA's Tennessee page.
Taxes in the price: 27.4¢ a gallon in Tennessee state taxes and fees plus the 18.4¢ federal tax, 45.8¢ in all, about 12% of today's price (Tax Foundation, July 2026; our calculation). Gas tax in Tennessee.
What driving costs in Tennessee
At $3.83 a gallon, a car that gets 27.2 mpg (the EPA's average for new vehicles) spends about $141 on gas every 1,000 miles, or 14.1 cents a mile (our calculation). Charging an electric car at Tennessee's average home electricity price costs about $42 for the same 1,000 miles. Gas is only one part of the bill: full-coverage car insurance in Tennessee averages $1,584 a year.
Planning a drive? The road trip cost calculator uses today's gas price, and the true cost of owning a car puts fuel next to insurance, repairs and depreciation.
Common questions
What is the average gas price in Tennessee today?
Regular gas in Tennessee averaged $3.83 a gallon on Oct 24, 2026, per AAA. Mid-grade was $4.31, premium $4.72 and diesel $5.97.
Is gas in Tennessee cheaper than the national average?
Yes. Tennessee's $3.83 is 10% less than the U.S. average of $4.27, which ranks it 7 of 51 states and DC (1 = cheapest, our ranking of AAA data).
How much does it cost to fill up a car in Tennessee?
About $57 for 15 gallons of regular at today's Tennessee average (our calculation). Driving 1,000 miles in a car that gets 27.2 mpg costs about $141 in gas.
Is an electric car cheaper to run than gas in Tennessee?
At Tennessee's average home electricity price, charging an EV for 1,000 miles costs about $42, compared with about $141 in gas for a 27.2 mpg car (our calculation from EIA and AAA prices, 31 kWh per 100 miles from fueleconomy.gov).
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