Northern MileSarnia diesel prices
223.9¢/L-9.1 vs national
Sarnia runs 9.1¢ below the national index — a real difference on a 500-litre fill. Work out a trip
Citing this figure
Sarnia diesel: 223.9¢/L, NRCan weekly survey print Tue, 25 Aug 2026. Northern Mile Media, dashboard.northernmilemedia.com/diesel-prices/ontario/sarnia/
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
Kitchener218.5 -4.2
Windsor218.6 -4.1
Kingston219.2 -3.5
Brantford219.5 -3.2
London220.3 -2.4
Barrie220.4 -2.3
Thunder Bay220.6 -2.1
St. Catharines220.8 -1.9
Oshawa221.0 -1.7
Guelph221.2 -1.5
Toronto222.4 -0.3
Hamilton223.0 +0.3
Peterborough223.9 +1.2
Sarnia223.9 +1.2
North Bay225.0 +2.3
Ottawa226.0 +3.3
Sudbury226.7 +4.0
Timmins227.7 +5.0
Sault Ste Marie231.8 +9.1
Every price is an NRCan survey observation from the print dated Tue, 25 Aug 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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