What Gas Costs
and Why
An independent guide to the price at the pumpData release · 30 September 2026

The weekly explanation

Why did prices change?

Measured movements, with the limits made clear.

These reports show how the measured price change divides between crude benchmarks, exchange rates, taxes and the refining/distribution residual. They do not prove that a refinery outage or news event caused a change.

gasoline · 2026-09-22 → 2026-09-29

Canada

-0.021 CAD/L (-1.1%)

The observed price moved from 1.905 to 1.884 CAD/L.

Accounting contributions to this change, CAD/L
ContributionChange
Crude benchmark movement+0.0000
Exchange-rate movement+0.0075
Refining & distribution residual-0.0225
Taxes-0.0060

Oil movement is valued at the earlier FX rate; the FX contribution uses the later oil price. Taxes can change because prices change, even without a new tax law. The downstream residual is not net profit.

Full report and price-change chart · Dated prices and sources · Related reporting

diesel · 2026-09-22 → 2026-09-29

Canada

-0.110 CAD/L (-4.0%)

The observed price moved from 2.741 to 2.631 CAD/L.

Accounting contributions to this change, CAD/L
ContributionChange
Crude benchmark movement+0.0000
Exchange-rate movement+0.0075
Refining & distribution residual-0.1035
Taxes-0.0140

Oil movement is valued at the earlier FX rate; the FX contribution uses the later oil price. Taxes can change because prices change, even without a new tax law. The downstream residual is not net profit.

Full report and price-change chart · Dated prices and sources · Related reporting