Gas Prices in Marietta, GA Today

Updated April 5, 2026 — Prices updated regularly from EIA data

$3.00

Average Regular Unleaded — Marietta, Georgia

Current Gas Prices in Marietta

The going rate for a gallon of regular unleaded in Marietta, Georgia is $$3.00 today. Local price variation gives shoppers a meaningful advantage when they take a few minutes to compare nearby stations.

Fuel TypePrice / GallonGradeTrend
Regular Unleaded$3.0087 octane▲ Rising
Mid-Grade$3.4789 octane▲ Rising
Premium$3.7591-93 octane▲ Rising
Diesel$4.06N/A▲ Rising

Price Comparison

Marietta Average
$3.00
Regular Unleaded
Georgia State Average
$2.83
$0.17 above the Georgia average
National Average
$3.99
$0.99 below the national average

About Gas Prices in Marietta

The best time to buy gas in Marietta follows the national pattern: Tuesday and Wednesday consistently show the lowest weekly prices, while Thursday through Sunday prices climb with weekend demand. Monthly, prices often dip mid-month. Following these patterns in Marietta can save 5-15 cents per gallon.

Gas Prices by Brand in This City

Estimated prices based on brand modifiers. Sorted cheapest to most expensive.

CHEAPEST
Costco
$2.85
Speedway
$2.97
Circle K
$2.98
Sunoco
$3.01
Marathon
$3.02
BP
$3.04
Mobil
$3.05
Exxon
$3.06
Shell
$3.08
Chevron
$3.10

Fuel Type Prices in This City

Regular Unleaded
87 octane
Premium Gasoline
91-93 octane
Diesel Fuel
N/A

Gas Prices in Nearby Cities

Kennesaw$2.97Roswell$3.06Atlanta$2.82Douglasville$2.72Johns Creek$2.86Peachtree City$2.76Rome$2.85Newnan$2.92Gainesville$2.85Dalton$2.95
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Frequently Asked Questions

Marietta's current average of $$3.00 compares to the Georgia statewide average of $$2.83. Marietta is $0.17 above the Georgia average the state average, which is typical for a metro of its size and location.
Gas stations in Marietta typically update prices 1-3 times per week in response to wholesale market changes. Prices generally dip early in the week and rise Thursday-Sunday. Following weekly trends helps identify optimal fill-up windows.
Costco and Sam's Club fuel stations serve many major metropolitan areas and offer the lowest prices for members — typically 15-25 cents below local market. Membership costs $65-130/year but typically pays for itself in fuel savings alone for regular drivers.
Gas price spikes in Marietta are typically triggered by regional supply disruptions, pipeline outages, refinery maintenance, seasonal blend transitions, and global crude oil price increases. Holiday demand surges around Memorial Day, July 4th, and Labor Day also push prices up temporarily.
Premium gas in Marietta is worth the extra cost only if your vehicle requires it. If your owner's manual says Required, always use premium. If it says Recommended, you may use regular with minimal performance loss. Never use regular in a vehicle that requires premium.

Related Gas Price Pages

Gas Prices in GeorgiaCheapest Gas in MariettaGas Prices Near MariettaCompare All StatesRegular Unleaded in MariettaPremium Gasoline in MariettaDiesel Fuel in MariettaShell - MariettaExxon - MariettaBP - MariettaChevron - MariettaMobil - MariettaGas Prices in KennesawGas Prices in RoswellGas Prices in Atlanta