Premium gasoline carries the widest markup spread of any grade in Winnipeg. At warehouse-club gas bars the premium-over-regular gap stays modest, while full-price stations on quiet corners stretch it to 20¢/L or more. If your vehicle requires 91 octane, choosing the right pump matters more for premium than for any other fuel — the difference between the cheapest and priciest premium on the same afternoon is real money on every tank, even in a market as cheap overall as Winnipeg’s.
Most priced stations we track in the Winnipeg area sell a premium grade, typically 91 octane — the prairie standard. Shell V-Power is 91+; the majors, Red River Co-op and Costco all post 91. Costco’s gas bars usually anchor the low end of the premium ranking by a wide margin (membership required), with the co-op and the competitive-corridor majors next.
One caution that applies to premium more than any other grade: only pay for it if your car requires or measurably benefits from it. If the owner’s manual says “premium recommended” (not required), a modern engine runs safely on regular with a small performance reduction. If it says “premium required”, use the list below to pay as little as possible for it.