Cheapest Gas in Marietta, GA

Updated July 4, 2026 — Prices updated regularly from EIA data

$2.85

Lowest price at Costco in Marietta

Finding Cheap Gas in Marietta

Marietta's most affordable fuel stations are identified below. At peak savings, Marietta drivers who choose wisely pay $$2.85 per gallon instead of $$3.10 — a difference that compounds quickly for regular commuters.

Maximum Savings in Marietta

Choose Costco over Chevron

$0.25 per gallon

$3.75 per 15-gallon fill • $12.00 per year (est.)

Cheapest Brands in Marietta

Rank	Brand	Est. Price	Savings vs. Most Expensive
#1	Costco	$2.85	$0.25
#2	Speedway	$2.97	$0.13
#3	Circle K	$2.98	$0.12
#4	Sunoco	$3.01	$0.09
#5	Marathon	$3.02	$0.08
#6	BP	$3.04	$0.06
#7	Mobil	$3.05	$0.05
#8	Exxon	$3.06	$0.04
#9	Shell	$3.08	$0.02
#10	Chevron	$3.10	$0.00

Gas Saving Tips for Marietta Drivers

Track weekly price cycles in your city — most markets follow predictable weekly patterns. Identifying yours and filling on low-price days saves 5-15 cents per gallon consistently.
Fill up before holiday weekends. Memorial Day, Fourth of July, and Labor Day consistently see 10-25 cent price spikes as demand surges. Topping off Thursday before a holiday weekend beats the rush.
Download the Upside app for cashback on gas purchases — users report average savings of 20-30 cents per gallon on qualifying transactions.
Check if your grocery store offers fuel rewards. Kroger, Safeway, Giant, and many regional chains discount gas by 10-50 cents per gallon tied to grocery spending thresholds.
Use regular unleaded unless your owner's manual specifically requires premium. For the majority of vehicles, there is zero performance benefit from a higher grade.