Australian Capital Territory fuel prices, September 2026

1. Canberra reported prices averaged 230.4 c/L for U91 in September 2026, up 23.7 c/L on August 2026.

2. Since our records began on 13 April 2026, the day of the week made little difference to U91 prices in Canberra: the cheapest and dearest days were 0.4 c/L apart on average.

3. Independent service stations in Australian Capital Territory averaged 7.7 c/L less than the major brands for U91 in September 2026, and 7.7 c/L less in Canberra.

4. Diesel cost 52.2 c/L more than U91 in Canberra in September 2026, up from 45.1 c/L in August 2026.

5. Canberra was the dearest of the 8 capital cities for U91 in September 2026 at 230.4 c/L.

1. Independent service stations in Canberra averaged 7.7 c/L less than major brands for U91 in September 2026.

2. Canberra was the dearest of the 8 capital cities for U91 in September 2026 at an average of 230.4 c/L.

3. On 23 September 2026, U91 in Canberra hit a record high daily average of 247.1 c/L since our records began on 13 April 2026.

4. Fuel prices in Canberra followed wholesale costs and excise rather than a regular price cycle during September 2026.

5. Sydney wholesale unleaded petrol averaged 218.2 c/L in September 2026, making it the dearest of the 121 months in ten years and the highest on record since AIP's series began in January 2004 (nominal prices).

6. Diesel in Canberra averaged 282.6 c/L in September 2026, making Canberra the dearest of the 8 capital cities for diesel.

7. Drivers paid a premium of 52.2 c/L for diesel over U91 in Canberra during September 2026, up from 45.1 c/L in August 2026.

8. Brent crude oil rose from 80.7 cents a litre ($91.1 US dollars a barrel) in August 2026 to 101.4 cents a litre ($114.2 US dollars a barrel) in September 2026.

9. Since 1 July 2026, U91 prices in Canberra increased 79.1 c/L from 165.7 c/L to 244.8 c/L on 30 September 2026.

10. E10 averaged 228.8 c/L across Canberra in September 2026.

11. Premium unleaded P95 averaged 249.5 c/L in Canberra, sitting 19.1 c/L above U91 in September 2026.

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Cents a litre. Each month is the station-day average of the days it has in the period. An area’s months count the same stations as its month.

Cents a litre. Each month is the station-day average of the days it has in the period. An area’s months count the same stations as its month.

Each common date counts once. Retail is the mean of the saved daily capital averages, not the station-day-weighted headline mean. TGP uses the same dates and carries the last published value for at most six subsequent calendar days. Retail prices can already include carried station prices. Means and spreads are rounded separately. The gross spread is not profit or a causal explanation. Retail carry limit: 30 days. Unmatched dates are excluded; common days are not a station or sales coverage percentage.

Worked out the same way as the table above.

Excise is charged on fuel as it leaves the terminal, so it is already in the terminal gate price; GST is then charged on top.

Source: ATO: Excise duty rates for fuel and petroleum products

Cents a litre, cheapest first. Each capital is its ABS urban area, worked out exactly as in its own state’s report. The margin is against its own terminal’s gate price (Canberra uses Sydney’s). Period-average margins are omitted here: comparable daily inputs and weights are not retained for these rows.

Cents a litre, cheapest first. Each capital is its ABS urban area, worked out exactly as in its own state’s report. The margin is against its own terminal’s gate price (Canberra uses Sydney’s). Period-average margins are omitted here: comparable daily inputs and weights are not retained for these rows.

Cents a litre; negative is cheaper than Canberra. The areas are Canberra’s ABS SA4 areas and the regional centres of 50,000 people or more.

A suburb or town is the ABS locality a station sits in, ranked within its SA4 by the same rule as the towns.

Each day’s average against the seven days centred on it, averaged by weekday, so a steady rise or fall does not favour one end of the week. A place needs four of each weekday with prices from five stations or more; a month usually shows the year so far only.

The major brands are 7-Eleven, Ampol, BP, Caltex, EG, Mobil, On The Run (OTR), Reddy Express, Shell and United; every other brand, and a station without one, is independent. Stations with a price on a quarter of the days; a brand is listed with five or more.

Brent: Europe Brent spot price FOB (US Energy Information Administration). Exchange rate: the Federal Reserve’s noon buying rate in New York. Both via FRED, Federal Reserve Bank of St. Louis, averaged over the days each is published; the Australian-dollar figures use each day’s rate. A litre is a barrel divided by 158.987. We use these free benchmarks because the refined-petrol and diesel benchmarks Australian wholesale prices follow (Singapore) are sold by subscription.

The listed count is the inventory used at build time, not a historical census of every operating station. One station selling two fuels on one day contributes two station–fuel–days. Fuel-specific counts must not be added to obtain a distinct station total. Distinct stations contributing eligible prices for this fuel and period. Calendar days describe the window, not new observations.