Sarnia · Ontario

Sarnia diesel prices

252.9¢/L-11.4 vs national

NRCan survey print Tue, 27 Oct 2026Ontario average 257.8¢/L

Across the line

Diesel crosses the border, but the number does not. The Canadian side is published per litre and the American side per gallon.

Sarnia · Canadian side252.9¢/L

Central Atlantic · the US district next door$6.508/gal

The American figure is the EIA weekly retail survey — published as $6.508/gal this week — shown the way an American carrier reads it, with the Canadian-dollar equivalent beside it once the page loads. A gallon is not a litre, so these two lines measure the same fuel in different units and the cents will never match. What does compare is the market: a load crossing into Central Atlantic buys its fuel on the other side of a border.

Sarnia runs 11.4¢ below the national index — a real difference on a 500-litre fill. Work out a trip

Citing this figure

Sarnia diesel: 252.9¢/L, NRCan weekly survey print Tue, 27 Oct 2026. Northern Mile Media, dashboard.northernmilemedia.com/diesel-prices/ontario/sarnia/

How it is calculated

What drives Sarnia prices

Sarnia is Chemical Valley. Imperial Oil, Suncor, and Shell refineries cluster here, and that refining base makes Sarnia among the cheapest diesel in Ontario. The refineries sit right in the city, so fuel is made locally rather than brought in from elsewhere, which keeps the price low. Highway 402 runs from Sarnia to the Port Huron, Michigan crossing, tying the city to the freight moving across the border. A cluster of refineries on a border crossing corridor is what sets this market apart.

Ontario survey cities

¢/L · distance from the provincial mean

Sarnia252.9 -4.9 Windsor253.6 -4.2 Kitchener253.7 -4.1 Barrie255.9 -1.9 Kingston256.4 -1.4 Guelph256.6 -1.2 Hamilton256.7 -1.1 Sudbury256.9 -0.9 London257.0 -0.8 Brantford257.4 -0.4 Oshawa257.5 -0.3 Peterborough257.5 -0.3 North Bay257.9 +0.1 Toronto258.4 +0.6 St. Catharines258.6 +0.8 Timmins260.2 +2.4 Thunder Bay262.6 +4.8 Ottawa262.9 +5.1 Sault Ste Marie265.1 +7.3

Every price is an NRCan survey observation from the print dated Tue, 27 Oct 2026. The provincial figure is the unweighted mean of its survey cities, the same figure that enters the Northern Mile Diesel Index.

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