Ontario Costco Gas Prices

Costco operates 27 fuel centers in Ontario across 21 cities, with the largest cluster in Etobicoke (2 stations). Across the province, regular gas averages 168.6¢, premium runs about 23.7¢ higher at 192.2¢, and diesel sits at 207.9¢. The lowest-priced regular pump is at Costco Peterborough in Peterborough at 153.9¢, while Brantford in Brantford sits about 23.0¢ higher. Across the province, regular pump prices have climbed about 7.9¢ over the past month, from 160.6¢ a month ago. Premium has climbed about 5.6¢ and diesel has climbed about 3.0¢ over the same period. Diesel is sold at 1 of the 27 Ontario locations.

If your vehicle takes premium, the lowest in Ontario is Costco Peterborough in Peterborough at 173.9¢. The cheapest diesel is at Costco N London in London at 207.9¢. 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.