Don't get pumped.
As of 28 July 2026, the cheapest Unleaded Petrol in South Australia is 169.8c per litre at Mogas, Balaklava — versus the South Australia average of 195.0c (0.8c above the national average of 194.2c). Across 682 stations, Unleaded Petrol ranges from 169.8c to 300.0c, so filling a 50-litre tank at the cheapest station saves about $12.60 over the state average. Over the past week the SA average has risen 14.9c.
Compare Unleaded Petrol across 682 stations in South Australia. Updated 09:17 PM, 28 Jul 2026.
Over the past 90 days, Unleaded Petrol in South Australia has averaged 177.4c per litre, peaking at 189.3c on 29 April and bottoming out at 159.4c on 1 July — a range of 29.9c. Over the past week the SA average has risen 14.9c. Timing a fill-up around that range matters: on a 50-litre tank, filling at the period low instead of the peak saves $14.95.
| Month | Average Unleaded Petrol |
|---|---|
| April 2026 | 190.3c |
| May 2026 | 185.8c |
| June 2026 | 170.5c |
| July 2026 | 167.9c |
The cheapest Unleaded Petrol price in South Australia right now is 169.8c per litre, across 682 stations tracked. The cheapest suburb right now is Barmera at a 180.5c average across 4 stations. Filling a 50-litre tank at the cheapest station instead of a station charging the state average of 195.0c saves $12.60. See the live cheapest-stations list on this page for the exact station, address and suburb. Prices update twice daily from the official state government feed, so the cheapest station can change between the morning and afternoon updates — check again before you drive.
The current South Australia average for Unleaded Petrol is 195.0c per litre — 0.8c above the national average of 194.2c. Prices at individual stations range from 169.8c to 300.0c, a spread of 130.2c that shows how much shopping around can save. Over the past week the SA average has risen 14.9c. Petrolmate computes this average from every station reporting Unleaded Petrol in South Australia via the official government price feed, refreshed twice daily.
U-Go is currently the cheapest brand for Unleaded Petrol in South Australia at 183.0c per litre average across 5 stations. The gap between the cheapest brand (U-Go, 183.0c) and the priciest in our list (EG, 195.2c) is 12.2c per litre — about $6.10 per 50-litre tank. Brand averages are recalculated twice daily from official price data, so the cheapest brand can change with the price cycle.
Over the past 90 days, Unleaded Petrol in South Australia has averaged 177.4c per litre, peaking at 189.3c on 29 April and bottoming out at 159.4c on 1 July — a range of 29.9c. Over the past week the SA average has risen 14.9c. Monthly averages for the past half-year are published in the table on this page. All figures come from official South Australia government price reporting, aggregated daily by Petrolmate.