Fuel costs in Canada did not move in a straight line this year, and they did not move the same way in every province. A fleet manager running routes through Ontario has faced a different cost curve than one running through British Columbia, even though both are reading headlines about the same global oil market. If your budgeting still treats "Canadian fuel prices" as a single number, you are missing the part of the story that actually determines your margins.
The National Picture: A Year of Volatility
Start with the country-wide numbers, because they set the baseline. Diesel opened the year at a national average of C$1.54 and climbed to C$2.28, a jump of roughly 48%, and the latest reading sits right at that high for the year. There has been no peak to retreat from yet. Gasoline followed a similar arc but with a twist: after averaging C$1.33 in January and topping out at C$1.92 (up 45%), it pulled back to C$1.72, well below its high.
That gap between diesel and gasoline behavior matters for anyone running a mixed fleet. Diesel has stayed elevated and is at its highest level of the year, while gasoline has given some ground back. If your dispatch planning assumes the two fuels move in lockstep, this year proved that assumption wrong.
Some of this national volatility traces back to the same forces rattling oil markets everywhere. U.S. commercial crude inventories posted a third straight weekly build, yet oil prices kept climbing anyway, a sign that traders are pricing in risk that has nothing to do with the size of the storage tanks in Cushing, Oklahoma. The UAE's decision to freeze trade with Iran after ballistic missiles landed near its coast is exactly the kind of geopolitical shock that ripples through global supply expectations regardless of how much oil is sitting in North American stockpiles. Saudi Aramco choosing to fill full contractual volumes for European refiners in September is a small data point, but it tells you the supply side is trying to reassure buyers even as the market stays jumpy. None of this is unique to Canada. It is imported volatility, and Canadian fleets absorb it whether they operate in Halifax or Kamloops.
Ontario vs British Columbia: Two Different Stories
Here is where the provincial data gets interesting, and where a national average stops being useful for actual planning.
Ontario started the year with diesel at C$1.43 and gasoline at C$1.26, both below the national marks. Diesel has climbed to C$2.20, its highest reading of the year (a 53% rise). Gasoline peaked at C$1.88, a nearly as steep 49% jump, before easing to C$1.65. Ontario's gasoline pullback has been more pronounced than the national gasoline pullback, which is a small mercy if your fleet leans heavily on light-duty vehicles. But the diesel side tells a less comfortable story: Ontario diesel is still at its high for the year, mirroring the national trend but from a slightly lower starting point.
British Columbia is the outlier, and not in a good way for fleet budgets. BC diesel started at C$1.63, well above Ontario, and rocketed to a spring peak of C$2.53, a 56% increase, the steepest of any figure in this data set. It has since eased to C$2.37, still the highest diesel price of the three regions. Gasoline in BC followed the same pattern of running hotter than the rest of the country: a January average of C$1.50, a peak of C$2.18 (up 45%), and a current level of C$1.89, the highest of the three regions cited here.
Put plainly: if you operate in British Columbia, you have been paying more for both fuels at every stage of this cycle than a comparable fleet in Ontario, and the gap has not closed. A dispatcher moving loads between the two provinces needs to treat them as separate cost environments, not variations on the same theme. Route planning software that averages provincial fuel costs into a single "Canada" line item is quietly under-costing BC-heavy operations and over-costing Ontario-heavy ones.
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What's Driving the Swings
It would be convenient to point at one cause, but Canadian pump prices this year have been shaped by a stack of overlapping pressures. Global crude pricing sets the floor, and that floor has been unstable because of the same geopolitical flashpoints mentioned above. Refining capacity and regional supply logistics add a provincial layer on top: BC's exposure to West Coast supply routes and its own tax and carbon pricing structure help explain why its numbers consistently run hotter than Ontario's. Currency movements against the U.S. dollar matter too, since crude is still priced internationally in USD even when it ends up in a Canadian tank.
There is also a macro backdrop worth understanding, even if it feels distant from the pump. Broader financial conditions, like the U.S. Treasury's move to expand its bond repurchase program to at least C$4 billion per operation, are part of a larger reshaping of capital markets tied to data center buildout, military spending, and reshoring of manufacturing. That kind of structural shift in where capital flows adds a layer of uncertainty to raw-materials-adjacent markets generally, oil included, even when it has nothing directly to do with a barrel of crude. None of this gives you a clean forecast. It just explains why the swings have been sharp in both directions rather than a smooth climb.
Why Fleet Managers Can't Just Wait This Out
A common instinct in a volatile fuel market is to wait for prices to settle before locking in supply decisions or renegotiating routes. This year's data argues against that instinct. Diesel nationally and in Ontario did not retreat. It is at its highest level of the year, and BC diesel sits only about 6% below a much higher spring peak. Gasoline did pull back somewhat, but not close to January levels, and BC's gasoline price remains the highest of the three regions even after that pullback. Waiting for a return to January pricing has not been a winning strategy in 2026, and there is no data here suggesting that pattern is about to reverse.
For a fleet manager, the practical implication is that fuel cost planning needs a floor for the worst case, not just a projection based on current spot prices. A route that penciled out fine at C$1.54 diesel needs to be re-tested against C$2.20 to C$2.37 diesel, because that is where the market has actually landed, not where it started the year. If your contracts with customers were priced assuming January fuel costs, you are likely absorbing a margin hit that has nothing to do with your operational efficiency and everything to do with a market you don't control.
Building a Regional Fuel Strategy
A few concrete steps make sense given what this data shows.
Separate your budgeting by province rather than using a national blended rate. A fleet with routes in both Ontario and BC should model each corridor independently, because the cost gap between them is real and has persisted through the year rather than narrowing.
Weight diesel exposure more heavily than gasoline exposure in your risk planning. Across the country and in both provinces, diesel has behaved more stubbornly, holding gains and pushing to new highs, while gasoline has shown more willingness to retreat. If your fleet is diesel-heavy, your budget risk is structurally higher right now.
Build customer contracts with fuel cost triggers or renegotiation clauses rather than fixed all-in rates locked to January or last-quarter pricing. The data shows those old baselines are no longer representative.
This is also where locking in a maximum fuel price for a defined period earns its keep. FuelAnchor's fixed-price fuel supply agreements set a price ceiling per gallon, so a fleet that knows its diesel exposure in Ontario or BC can plan routes and quote customers against a number that won't move against them, regardless of what happens to crude next quarter. It doesn't eliminate the underlying volatility described above, but it moves that volatility off your books and onto a contract you control.
A Concrete Next Step
Pull your fuel spend for the past twelve months, split it by province, and split it again by fuel type. If your BC diesel line has grown faster than your Ontario diesel line, you already have your answer on where to prioritize a fixed-price arrangement first. Start there, not with a national average that hides the problem.
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