Don't get pumped.
As of 28 July 2026, the cheapest Diesel in South Australia is 200.4c per litre at Independent, Mannum — versus the South Australia average of 233.9c (0.7c below the national average of 234.6c). Across 430 stations, Diesel ranges from 200.4c to 325.0c, so filling a 50-litre tank at the cheapest station saves about $16.75 over the state average. Over the past week the SA average has risen 18.7c.
Compare Diesel across 430 stations in South Australia. Updated 04:59 PM, 28 Jul 2026.
Over the past 81 days, Diesel in South Australia has averaged 213.7c per litre, peaking at 254.1c on 8 May and bottoming out at 185.0c on 1 July — a range of 69.1c. Over the past week the SA average has risen 18.7c. Timing a fill-up around that range matters: on a 50-litre tank, filling at the period low instead of the peak saves $34.55.
| Month | Average Diesel |
|---|---|
| May 2026 | 235.2c |
| June 2026 | 209.5c |
| July 2026 | 193.4c |
The cheapest Diesel price in South Australia right now is 200.4c per litre, across 430 stations tracked. The cheapest suburb right now is Barmera at a 217.3c average across 4 stations. Filling a 50-litre tank at the cheapest station instead of a station charging the state average of 233.9c saves $16.75. 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 Diesel is 233.9c per litre — 0.7c below the national average of 234.6c. Prices at individual stations range from 200.4c to 325.0c, a spread of 124.6c that shows how much shopping around can save. Over the past week the SA average has risen 18.7c. Petrolmate computes this average from every station reporting Diesel in South Australia via the official government price feed, refreshed twice daily.
Solo is currently the cheapest brand for Diesel in South Australia at 227.7c per litre average across 12 stations. The gap between the cheapest brand (Solo, 227.7c) and the priciest in our list (AM/PM, 234.5c) is 6.8c per litre — about $3.40 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 81 days, Diesel in South Australia has averaged 213.7c per litre, peaking at 254.1c on 8 May and bottoming out at 185.0c on 1 July — a range of 69.1c. Over the past week the SA average has risen 18.7c. 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.