Gas prices in South Carolina today
Regular gas in South Carolina averages $3.80 a gallon, 11% less than the U.S. average of $4.27. That makes South Carolina one of the cheapest: rank 5 of 51 (1 = cheapest).
| Grade | South Carolina | U.S. average | 15-gallon fill-up |
|---|---|---|---|
| Regular | $3.80 | $4.27 | $57 |
| Mid-grade | $4.28 | $4.78 | $64 |
| Premium | $4.68 | $5.17 | $70 |
| Diesel | $5.82 | $6.35 | $87 |
Source: AAA, South Carolina 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 South Carolina page.
Taxes in the price: 28.8¢ a gallon in South Carolina state taxes and fees plus the 18.4¢ federal tax, 47.1¢ in all, about 12% of today's price (Tax Foundation, July 2026; our calculation). Gas tax in South Carolina.
What driving costs in South Carolina
At $3.80 a gallon, a car that gets 27.2 mpg (the EPA's average for new vehicles) spends about $140 on gas every 1,000 miles, or 14.0 cents a mile (our calculation). Charging an electric car at South Carolina's average home electricity price costs about $49 for the same 1,000 miles. Gas is only one part of the bill: full-coverage car insurance in South Carolina averages $3,060 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 South Carolina today?
Regular gas in South Carolina averaged $3.80 a gallon on Oct 24, 2026, per AAA. Mid-grade was $4.28, premium $4.68 and diesel $5.82.
Is gas in South Carolina cheaper than the national average?
Yes. South Carolina's $3.80 is 11% less than the U.S. average of $4.27, which ranks it 5 of 51 states and DC (1 = cheapest, our ranking of AAA data).
How much does it cost to fill up a car in South Carolina?
About $57 for 15 gallons of regular at today's South Carolina average (our calculation). Driving 1,000 miles in a car that gets 27.2 mpg costs about $140 in gas.
Is an electric car cheaper to run than gas in South Carolina?
At South Carolina's average home electricity price, charging an EV for 1,000 miles costs about $49, compared with about $140 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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