What is the average petrol price in Adelaide this week?

Regular unleaded (U91) averaged 203.0 c/L in Adelaide for the week ending 30 August 2026. Diesel averaged 249.4 c/L. National average: 204.8 c/L.

Why is this a weekly average and not a live price?

Pump prices cycle within a week, so a single moment misleads. The weekly average from the Australian Institute of Petroleum is the fair comparison line. The figures here are the week ending 30 August 2026. Updated each week from AIP's Monday report; this is the week ending 30 August 2026.

Adelaide Petrol Prices — Week Ending 30 August 2026

Name: Adelaide weekly average fuel prices
Creator: Australian Institute of Petroleum
License: https://creativecommons.org/licenses/by/4.0/

203.0 c/L average regular unleaded (U91)

Diesel: 249.4 c/L · National U91 average: 204.8 c/L

AIP weekly report · week ending 30 August 2026

Adelaide's prices tend to move in sharp cycles, climbing quickly to a peak and then falling away before the next rise. The swings can be steep, so the difference between a good day and a bad day to fill up is often significant.

South Australia runs a real-time fuel pricing scheme, so stations report their prices and you can check live figures across the city. Seeing where the cycle sits before you commit is the simplest way to avoid filling up at the top.

Capital-city weekly averages, week ending 30 August 2026
City	U91 (c/L)	Diesel (c/L)
Sydney	202.5	248.0
Melbourne	204.7	253.1
Brisbane	202.3	252.8
Perth	203.4	246.2
Adelaide	203.0	249.4
Hobart	207.2	255.2
Canberra	208.5	259.9
Darwin	211.6	256.8
National average	204.8	252.7

What does a drive cost at Adelaide prices?

Distance (km)

Consumption (L/100 km)

Fuel price (c/L)

Split between

Return trip

$16.24

Fuel used8.0 L

Price used203.0 c/L

Default price: Adelaide average U91, week ending 30 August 2026. Fuel only — tolls, wear and rest stops not included.

Frequently asked questions

What is the average petrol price in Adelaide this week?: Regular unleaded (U91) averaged 203.0 c/L across Adelaide for the week ending 30 August 2026, and diesel averaged 249.4 c/L. The national average was 204.8 c/L.
Why is this a weekly average and not a live price?: Pump prices cycle within a week, so any single moment misleads. The weekly average is the fair comparison line. It comes from the Australian Institute of Petroleum's weekly report; the figures here are the week ending 30 August 2026. Updated each week from AIP's Monday report; this is the week ending 30 August 2026.

Trip costs from Adelaide

Sources — figures current as at 30 August 2026.

Updated each week from AIP's Monday report; this is the week ending 30 August 2026. Individual stations vary with the price cycle. SA drivers can check live station prices via the state's fuel price service.