Costco Diesel Prices in Canada
- Diesel avg
- 242.1¢▲ +0.5¢
- Cheapest diesel
- 216.9¢
- Over regular
- +73.0¢
- Gas bars with diesel
- 6
Updated · Costco diesel in Canada · ¢ per litre · “Over regular” is the median gap at the same station
Costco sells diesel at 6 of its 81 gas bars in Canada, about 7%, and the average Costco diesel price today is 242.1¢ per litre. That is up 1.2¢ over the last 30 days. The 6 gas bars are spread across 5 provinces, from British Columbia to Quebec; Ontario, Canada’s biggest Costco market, has just one.
Every station below posted a diesel price in our latest daily reading. Each one links to its own page with regular and premium prices and 30 days of history.
Costco diesel near me
Enter your postal code or city to find the closest Costco that sells diesel, with today’s diesel price and whether it is open now.
Costco diesel locations map
Tap a dot for the station and today’s diesel price.
Costco diesel prices by gas bar
All 6 Costco gas bars with diesel in Canada, cheapest first. Today’s spread runs from 216.9¢ in Grande Prairie to 279.9¢ in Vaudreuil-Dorion.
| Station | Diesel | Regular | Gap |
|---|---|---|---|
| Grande PrairieGrande Prairie, AB | 216.9¢ | 152.9¢ | +64.0¢ |
| E CalgaryCalgary, AB | 218.9¢ | 149.9¢ | +69.0¢ |
| S SaskatoonSaskatoon, SK | 234.9¢ | 164.9¢ | +70.0¢ |
| N LondonLondon, ON | 241.9¢ | 165.9¢ | +76.0¢ |
| Prince GeorgePrince George, BC | 259.9¢ | 172.9¢ | +87.0¢ |
| VaudreuilVaudreuil-Dorion, QC | 279.9¢ | 172.9¢ | +107.0¢ |
Average Costco diesel price in Canada
Last 30 days · ¢ per litreDiesel: 240.9¢ on Oct 2 to 242.1¢ on Oct 31, low 234.7¢, high 243.1¢.
Costco diesel by province
| Province | With diesel | Avg diesel | Cheapest |
|---|---|---|---|
| Alberta | 2 of 18 | 217.9¢ | Grande Prairie 216.9¢ |
| British Columbia | 1 of 8 | 259.9¢ | Prince George 259.9¢ |
| Ontario | 1 of 28 | 241.9¢ | N London 241.9¢ |
| Quebec | 1 of 18 | 279.9¢ | Vaudreuil 279.9¢ |
| Saskatchewan | 1 of 3 | 234.9¢ | S Saskatoon 234.9¢ |
No Costco diesel in these 3 provinces, though they have Costco gas:
- Manitoba · 3 gas bars
- New Brunswick · 2 gas bars
- Newfoundland and Labrador · 1 gas bar
Is Costco diesel cheaper?
Usually, but 3 of the 6 gas bars are in lower-priced Prairie markets, which flatters a national comparison. On September 29, 2026 the Costco average of 247.1¢/L compared with roughly 264¢/L nationally, per Natural Resources Canada figures. Compare against stations near the gas bar you would use.
Diesel costs more than gasoline right now: a median 73.0¢ per litre over regular at the same Costco. For why Costco pumps price low in general, see why Costco gas is so cheap.
What Costco diesel is
Kirkland Signature Diesel, Top Tier approved. Costco is on Top Tier’s list of approved diesel brands for the US and Canada. That standard covers injector-deposit and lubricity additives, oxidation stability, water checks at the station and dispenser filters. It is ultra-low-sulfur diesel, like all on-road diesel.
Biodiesel only where the law requires it. Provincial renewable-content rules set the blend; the pump label shows it.
Pickups yes, big rigs no. Costco diesel pumps are ordinary passenger-vehicle dispensers with the larger diesel nozzle, and there are no high-flow truck lanes. Tall motorhomes and trailers should check the canopy and the exit before pulling in.
DEF comes in boxes. No Costco sells diesel exhaust fluid at the pump; many warehouses stock 2.5-gallon (9.46 L) boxes inside.
More detail, with sources: Does Costco sell diesel? Diesel pumps keep the same hours as the rest of the gas bar.
Costco diesel: common questions
Does Costco sell diesel in Canada?
Yes, at select locations only: 6 of the 81 Costco gas bars we track (about 7%) posted a diesel price as of the October 31, 2026 reading. Every one of them is listed on this page.
What is the Costco diesel price today?
The average Costco diesel price is 242.1¢ per litre as of the October 31, 2026 reading, from 216.9¢ at Grande Prairie to 279.9¢ at Vaudreuil.
Is Costco diesel more expensive than regular gas?
Yes, at the moment. At the same Costco, diesel runs a median 73.0¢ per litre above regular as of the October 31, 2026 reading.
Is Costco diesel Top Tier?
Yes. Kirkland Signature is on Top Tier’s list of approved diesel brands for the US and Canada, a standard that covers injector-deposit and lubricity additives, water checks and dispenser filtration. It is ultra-low-sulfur diesel like all on-road diesel.
Does Costco sell DEF?
Not at the pump. Many warehouses stock boxed diesel exhaust fluid (PEAK BlueDEF, 2.5 gallons / 9.46 L) inside the store.
Do I need a membership to buy diesel at Costco?
Yes. The pump needs a membership card or a Costco Shop Card, and takes Mastercard, debit or a Shop Card — no Visa and no cash.