Costco Gas Prices in Maine
- Regular avg
- $3.879
- Premium avg
- $4.879
- Stations reporting
- 1
Avg of 1 station · per gallon · ▲▼ change since the previous day
Average price history in Maine
Last 30 days · per gallonRegular: $4.129 on Oct 2 to $3.879 on Oct 31, low $3.879, high $4.129. Premium: $4.879 on Oct 2 to $4.879 on Oct 31, low $4.879, high $4.879.
Costco gas in Maine today
The only Costco gas station in Maine is at the Scarborough warehouse, 455 Scarborough Downs Road.
Maine has a single Costco warehouse with a gas station, so the Maine average above is that station’s own price rather than a spread.
Costco Regular prices in Maine have eased about $0.250 over the past month, from $4.129 a month ago.
- Only Costco gas station in Maine
- Scarborough — $3.879
- vs the US average
- $0.396 below, at $4.275
- Diesel
- not sold here
- Weekday opening
- 6 a.m.
- Warehouse opened
- November 2023
Maine stations by price
Cheapest first — page through to see more.
| Rank | Station | Location | Regular today |
|---|---|---|---|
| 1 | Scarborough MEScarborough | Scarborough | $3.879 |
Fuel grades at Costco in Maine
The Costco station in Maine sells Kirkland Signature fuel, which is Top Tier certified. None of it reported a diesel price in the last 30 days.
| Grade | Stations | Avg today | Cheapest |
|---|---|---|---|
| Regular | 1 | $3.879 | Scarborough ME $3.879 |
| Premium | 1 | $4.879 | Scarborough ME $4.879 |
Regular
1 station87-octane Kirkland Signature unleaded, the grade most cars are built for.
- Same TOP TIER detergent package as premium. The only difference between the two is octane.
- Can contain up to 10% ethanol, like most US gasoline. The pump label shows the blend.
Premium
1 stationKirkland Signature premium: 91 octane at most stations, 93 in some regions.
- Only needed if your owner’s manual requires or recommends premium. Higher octane resists engine knock; it adds nothing to an engine built for regular.
- Carries the same detergent additives as regular.
Not sold at Costco
- Mid-grade (89): Costco pumps offer regular and premium only.
- Cash sales: every Costco pump is card-only.
Is Costco gas in Maine good quality?
Costco does not sell a refiner’s brand. Every pump in Maine dispenses Costco’s own Kirkland Signature fuel, bought from major refiners and distributors in the region and finished with Costco’s additive package.
Kirkland Signature gasoline is licensed TOP TIER, the detergent standard set by automakers including GM, Ford, Toyota, Honda and BMW. Costco puts its detergent level at about five times the EPA minimum, which is what keeps intake valves and fuel injectors clear of carbon deposits. Costco’s gasoline also contains friction modifiers that it says reduce engine wear.
In short, the low price is not a lower grade. The saving comes from Costco running its gas as a membership perk on thin margins, not from the fuel.
Costco gas station hours in Maine
Pump hours run longer than the warehouse's, and weekends are shorter. Times are local.
| Station | Mon–Fri | Sat | Sun |
|---|---|---|---|
| Scarborough ME | 6 a.m. – 10 p.m. | 6 a.m. – 8:30 p.m. | 6 a.m. – 7:30 p.m. |
What else is at Costco warehouses in Maine
Every Costco gas station sits in a warehouse parking lot, so a fill-up can share a trip with the rest of the list.
- Food court
- 1 of 1
- Pharmacy
- 1 of 1
- Optical
- 1 of 1
- Tire center
- 1 of 1
- Car wash
- 0 of 1
- EV charging
- 0 of 1
How Costco gas works in Maine
Bring your card. The pump asks for an active Costco membership card before it starts, at the gas station in Maine. Without a membership, a Costco Shop Card loaded with credit works the same way.
Pay by card. The pumps take Visa, most debit cards and the Costco Shop Card. There is no cash, and a card hold of up to $150 can show until the fill posts.
Check the price first. Each station sets its own price, usually once a day, so two Costco stations in Maine can differ. Today the regular average here is $3.879. The prices on this page are collected once daily and can lag a same-day change at the pump.
Go early or late. Lines are longest on weekend afternoons and weekday evenings. The first pumps here open at 6 a.m. on weekdays.
Maine prices by city
- Scarborough · 1 station$3.879
States near Maine
- Costco gas prices Massachusetts · 4 stations$3.782
- Costco gas prices Vermont · 1 station$4.249
- Costco gas prices Connecticut · 7 stations$3.916
- Costco gas prices New York · 11 stations$3.992
- Costco gas prices New Jersey · 19 stations$3.912
- Costco gas prices Delaware · 1 station$3.729
Costco gas in Maine: common questions
Where is the cheapest Costco gas in Maine today?
Maine has one Costco gas station, Scarborough, so it is the cheapest by default: Regular is $3.879 there as of the October 31, 2026 reading.
How many Costco gas stations are there in Maine?
Maine has 1 Costco warehouse with a gas station, and it has reported a price in the last 30 days.
Does the Costco gas station in Maine sell diesel?
No — the one Costco gas station in Maine has reported no diesel price in the last 30 days. Costco sells diesel at a minority of its locations in the US.
Is Costco gas cheaper in Maine than in the US?
Yes — the average Costco Regular price in Maine is $3.879, $0.396 below the US average of $4.275 as of the October 31, 2026 reading.
Are Costco gas prices in Maine going up or down?
Down — the average Costco Regular price in Maine has eased about $0.250 over the past month, from $4.129 to $3.879.
What time do Costco gas stations in Maine open?
The pumps open at 6 a.m. on weekdays at the one station in Maine, ahead of the warehouse doors. Each station page carries its own full week, in local time.