Costco Gas Prices in Tucson, AZ
- Regular avg
- $3.842▼ −$0.040
- Premium avg
- $4.519▼ −$0.033
- Stations reporting
- 3
Avg of 3 stations · per gallon · ▲▼ change since the previous day
Price history in Tucson
Last 30 days · per gallonRegular: $4.212 on Oct 2 to $3.842 on Oct 31, low $3.842, high $4.222. Premium: $4.849 on Oct 2 to $4.519 on Oct 31, low $4.519, high $4.886.
Costco gas in Tucson today
Tucson has 3 Costco gas stations: NW Tucson at 3901 W Costco Dr, SW Tucson at 1650 E Tucson Marketplace Blvd, and Tucson at 6255 East Grant Road.
Today’s Regular prices span $0.130 across the 3 stations reporting, from the cheapest to the most expensive.
2 stations are tied at today’s lowest price.
Costco Regular prices in Tucson have eased about $0.380 over the past month, from $4.222 a month ago.
The furthest any single station moved was NW Tucson, down $0.430.
- Cheapest today
- NW Tucson — $3.799
- Most expensive today
- Tucson — $3.929
- vs the Arizona average
- $0.240 below, at $4.083
- Diesel
- sold at none of the 3 stations
Costco gas stations in Tucson
Fuel grades at Costco in Tucson
All 3 Costco gas stations in Tucson sell Kirkland Signature fuel, which is Top Tier certified. None of them reported a diesel price in the last 30 days.
| Grade | Stations | Avg today | Cheapest |
|---|---|---|---|
| Regular | 3 | $3.842 | NW Tucson $3.799 |
| Premium | 3 | $4.519 | NW Tucson $4.499 |
Regular
all 3 stations87-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
all 3 stationsKirkland 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 Tucson good quality?
Costco does not sell a refiner’s brand. Every pump in Tucson 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 Tucson
On weekdays the earliest pumps in Tucson come on at 6 a.m. (NW Tucson) and the last ones switch off at 10 p.m. (NW Tucson). Pump hours run longer than the warehouse's, and weekends are shorter. Times are local.
What else is at Costco warehouses in Tucson
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
- 3 of 3
- Pharmacy
- 3 of 3
- Optical
- 3 of 3
- Tire center
- 3 of 3
- Car wash
- 0 of 3
- EV charging
- 0 of 3
How Costco gas works in Tucson
Bring your card. The pump asks for an active Costco membership card before it starts, at all 3 gas stations in Tucson. 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 Tucson can differ. Today the regular average here is $3.842. 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.
Cities near Tucson
- Costco gas prices Queen Creek · AZ · 80 mi$4.049
- Costco gas prices Mesa · AZ · 89 mi$4.049
- Costco gas prices Gilbert · AZ · 89 mi$4.109
- Costco gas prices Chandler · AZ · 91 mi$4.199
- Costco gas prices Tempe · AZ · 96 mi$4.199
- Costco gas prices Scottsdale · AZ · 110 mi$4.099
- Costco gas prices Phoenix · AZ · 112 mi$4.151
- Costco gas prices Avondale · AZ · 114 mi$3.999
States near Arizona
- Costco gas prices New Mexico · 3 stations$3.712
- Costco gas prices Nevada · 9 stations$4.752
- Costco gas prices California · 129 stations$5.453
- Costco gas prices Utah · 16 stations$4.283
Costco gas in Tucson: common questions
Where is the cheapest Costco gas in Tucson today?
NW Tucson posts the lowest Regular price in Tucson, $3.799 as of the October 31, 2026 reading — $0.130 under Tucson, the most expensive of the 3 stations reporting. It shares that price with 1 other station.
How many Costco gas stations are there in Tucson?
Tucson has 3 Costco warehouses with a gas station, and all of them reported a price in the last 30 days.
Does any Costco gas station in Tucson sell diesel?
No — none of the 3 stations in Tucson has reported a diesel price in the last 30 days. Costco sells diesel at a minority of its locations in the US.
Is Costco gas cheaper in Tucson than in Arizona?
Yes — the average Costco Regular price in Tucson is $3.842, $0.240 below the Arizona average of $4.083 as of the October 31, 2026 reading.
Are Costco gas prices in Tucson going up or down?
Down — the average Costco Regular price in Tucson has eased about $0.380 over the past month, from $4.222 to $3.842.