Costco Maine Gas Prices

Costco operates 1 fuel center in Maine, all in Scarborough. Across the state, regular gas averages $3.989 and premium runs about $0.800 higher at $4.789. Across the state, regular pump prices have climbed about $0.090 over the past month, from $3.899 a month ago. Premium has climbed about $0.190 over the same period.

If your vehicle takes premium, the lowest in Maine is Costco Scarborough in Scarborough at $4.789. Pump prices shift from one warehouse to the next with local taxes, fuel-blend rules, and transport costs, but Costco fuel is members-only and usually runs below nearby branded stations — which is what keeps these pumps busy.