Canadian fuel prices are entering another volatile stretch as a renewed oil-market shock works its way toward local pumps. A September 2 forecast from Canadians for Affordable Energy put regular gasoline in Vancouver at 223.9 cents per litre, while diesel in the Greater Toronto Area was forecast to jump seven cents to 232.9 cents per litre.
The pressure is arriving as Brent crude trades around US$95 a barrel amid renewed fighting involving the United States and Iran and continuing concern about shipments through the Strait of Hormuz. West Texas Intermediate has been trading closer to US$90, making Brent the benchmark that more closely fits the US$95 level. For Canadian households and businesses, the important story is not simply that crude is expensive. Gasoline and diesel are moving differently across regions, and another major change to federal fuel taxes is only days away.
Vancouver’s 223.9¢ Forecast Marks a Sharp Daily Increase
Canadians for Affordable Energy’s September 2 forecast put Vancouver regular gasoline at 223.9 cents per litre, six cents above its September 1 figure of 217.9. Premium was forecast at 256.9 cents, also six cents higher, while diesel climbed seven cents to 275.9 cents. Those numbers put Vancouver firmly among Canada’s most expensive major fuel markets during the latest energy-price surge.
The forecast should not be treated as a permanent new price floor. It represents a day-ahead estimate based on wholesale energy markets and regional conditions, and Vancouver prices have been moving rapidly. The same forecaster’s recent history shows regular gasoline ranging from 193.9 to 223.9 cents per litre over a 30-day period. That degree of movement matters for commuters and businesses because budgeting becomes harder when a routine fill-up can change materially from one week to the next. Vancouver is also particularly sensitive because international commodity movements are layered on top of transportation costs, refining conditions and comparatively high regional fuel taxes.
GTA Diesel’s Seven-Cent Jump Carries a Wider Economic Signal
In the Greater Toronto Area, the September 2 forecast was considerably less dramatic for gasoline. Regular was listed at 183.9 cents per litre, unchanged from the previous forecast. Diesel, however, was forecast at 232.9 cents, up seven cents in a single move. That split is significant because diesel prices reach far beyond households driving diesel-powered pickups or SUVs.
Diesel is central to trucking, construction, agriculture and other commercial activity. When wholesale diesel becomes more expensive, transportation-intensive businesses can eventually face higher operating expenses even when retail gasoline remains comparatively stable. Ontario already applies a nine-cent-per-litre provincial fuel tax to clear diesel, although the federal four-cent excise tax is temporarily suspended. The latest jump is therefore largely a market story rather than the result of a newly imposed tax. Natural Resources Canada notes that retail fuel prices are shaped by crude costs, refinery economics, inventories, transportation expenses and local market conditions. Those moving parts help explain why gasoline and diesel can suddenly head in different directions.
Brent Near US$95 Is Rebuilding Pressure in Wholesale Fuel Markets
The oil market has been unusually unsettled. Reuters reported Brent crude settling at US$94.65 a barrel on September 1 after gaining more than US$4, while West Texas Intermediate settled at US$90.22. During September 2 trading, Brent moved around the mid-US$90 range after briefly reaching above US$97, before retreating as traders assessed whether threatened supply disruptions would become lasting shortages.
That distinction is important at Canadian pumps. Crude oil is a major input into gasoline and diesel prices, but a barrel of oil does not translate mechanically into an immediate retail-price increase. Refineries must turn crude into finished products, wholesale markets establish regional values, and retailers then adjust their posted prices. Diesel can also move more sharply than gasoline when middle-distillate supplies are tight. Natural Resources Canada identifies crude prices as a major driver but also points to refinery margins, inventories, transportation and local supply conditions. The latest Canadian forecasts therefore reflect both the oil shock and stresses farther down the fuel-supply chain.
Vancouver’s Price Premium Goes Beyond the Cost of Crude
Vancouver regularly trades above many other Canadian markets even when every province is buying oil in the same global environment. One reason is taxation. British Columbia eliminated its consumer carbon tax effective April 1, 2025, but provincial and regional motor-fuel taxes remain. In the Vancouver area, the provincial motor-fuel tax structure on clear gasoline totals 27 cents per litre, including an 18.5-cent regional component dedicated to TransLink.
Taxes are only part of the explanation. Natural Resources Canada notes that geography, transportation costs, local competition, refinery access and temporary supply issues can all produce substantial differences between Canadian cities. That means a surge in crude oil can hit Vancouver from an already elevated starting point. The latest forecasts illustrate the contrast clearly: Vancouver’s September 2 regular-gas estimate stood well above the GTA forecast even as both markets faced the same international oil shock. For motorists, the practical result is that national headlines about crude prices can understate how different the experience becomes once fuel reaches individual regional markets.
Canadians Are Still Receiving a Temporary Federal Fuel-Tax Cushion
One unusual feature of the current price spike is that it is happening while the federal excise tax on gasoline and diesel is temporarily suspended. Ottawa reduced the federal gasoline excise tax from 10 cents per litre to zero and the diesel tax from four cents to zero effective April 20, 2026, responding to fuel-price pressures connected with Middle East supply disruptions. Parliament later passed legislation implementing the measure.
That relief remains in force through September 7. Unless policy changes again, the normal federal rates return September 8: 10 cents per litre for gasoline and four cents for diesel. The government estimated the temporary suspension would provide more than $2.4 billion in relief during 2026. This timing creates a notable risk for motorists. Current Vancouver and GTA forecasts already reflect substantial market pressure while the excise tax is absent. If elevated wholesale prices persist as the tax returns, retail prices could face another source of upward pressure. Actual pump changes will still depend on wholesale markets and retailer pricing rather than taxes alone.
The Strait of Hormuz Remains the Market’s Central Risk
The renewed oil shock has its roots in the Middle East. Reuters reported fresh U.S.-Iran fighting and concern about damage to tankers and shipping through the Strait of Hormuz, one of the world’s most important energy routes. Brent briefly moved above US$97 on September 2 before easing, illustrating how quickly traders are responding to every new sign of disruption or restored shipping activity.
There have also been signs that oil is still moving. U.S. Energy Secretary Chris Wright said more than 17 million barrels of oil passed through the Strait on Monday, providing some reassurance that shipments had not stopped altogether. That helps explain why crude prices retreated from their intraday highs rather than continuing straight upward. For Canadian fuel buyers, however, volatility itself creates uncertainty. A sustained improvement in shipping could pull crude and wholesale fuel costs lower. Fresh attacks, tanker incidents or a more serious closure could do the opposite. The sensitivity of the market means pump forecasts can change noticeably before many consumers have even finished the fuel purchased during the previous price move.
The Next Forecast Already Shows How Quickly the Picture Can Reverse
The clearest warning against treating 223.9 cents as Vancouver’s new normal comes from the next day’s forecast. Canadians for Affordable Energy currently projects Vancouver regular gasoline at 212.9 cents per litre for September 3, an 11-cent decline from September 2. Diesel, however, is forecast to move the other way, rising another 10 cents to 285.9 cents. That is an unusually stark demonstration of how different refined products can respond to the same market.
The GTA shows a similar divergence. Its September 3 forecast puts regular gasoline at 185.9 cents, two cents higher, while diesel is projected at 243.9 cents, another 11-cent increase. Those movements underline why crude oil alone cannot explain every price posted at a station. Gasoline and diesel have distinct wholesale markets, inventories and refinery economics. For drivers, the useful takeaway is less about trying to perfectly time a fill-up and more about recognizing that large daily swings are possible while international oil and refined-product markets remain unsettled.
September Could Remain an Expensive and Unpredictable Month
The combination of elevated crude prices, diesel-market pressure and the scheduled return of the federal excise tax gives September an unusually complicated outlook. A de-escalation in the Middle East could quickly ease some of the commodity pressure, particularly if shipping through the Strait of Hormuz normalizes. But continued attacks or new restrictions could keep Brent elevated and prevent Canadian wholesale fuel prices from settling.
Consumers will also need to separate temporary daily forecasts from longer-lasting cost changes. Vancouver’s September 2 spike is already followed by a projected decline the next day, while diesel forecasts in Vancouver and Toronto continue rising. Starting September 8, the federal tax environment changes as well. None of those factors guarantees a specific pump price, because retailers, refiners and wholesale markets still determine how movements are passed through. What they do show is that Canadians are entering the final stretch of summer with fuel prices being pulled by several forces at once—global conflict, regional market conditions and a scheduled change in federal taxation.
