Cheapest Gas in Plano, TX

Updated May 21, 2026 — Prices updated regularly from EIA data

$2.71

Lowest price at Costco in Plano

Finding Cheap Gas in Plano

Every cent counts when you're filling up in Plano. The difference between the cheapest and most expensive stations in town is $$0.25 per gallon today — pure savings just from choosing the right location.

Maximum Savings in Plano

Choose Costco over Chevron

$0.25 per gallon

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

Cheapest Brands in Plano

Rank	Brand	Est. Price	Savings vs. Most Expensive
#1	Costco	$2.71	$0.25
#2	Speedway	$2.83	$0.13
#3	Circle K	$2.84	$0.12
#4	Sunoco	$2.87	$0.09
#5	Marathon	$2.88	$0.08
#6	BP	$2.90	$0.06
#7	Mobil	$2.91	$0.05
#8	Exxon	$2.92	$0.04
#9	Shell	$2.94	$0.02
#10	Chevron	$2.96	$0.00

Gas Saving Tips for Plano Drivers

Use the GasBuddy or Waze app to compare prices within 5 miles of your location before every fill-up. Even a 10-cent difference on 15 gallons saves $1.50 each fill-up.
Join a warehouse club (Costco, Sam's Club, BJ's) — their fuel consistently runs 10-25 cents below local market prices. The membership cost typically pays for itself in fuel savings within the first two months.
Sign up for gas station loyalty apps — Shell Fuel Rewards, Marathon MakeItCount, and Circle K Inner Circle all offer genuine per-gallon discounts that compound over time.
Use a gas rewards credit card. The Costco Citi Visa earns 4% back on eligible gas; Blue Cash Preferred earns 3% at US gas stations. Pairing a reward card with a warehouse club maximizes savings.
Avoid filling up at highway exits, airports, and tourist areas where convenience premiums routinely add 15-25 cents per gallon.