Diesel prices › South Australia

Diesel prices in South Australia today

The typical diesel price in South Australia is 283.9c a litre, 48.5c more than petrol, across 368 sites priced in the last 72 hours.

283.9c
typical diesel
+48.5c
vs ULP 91
$24
more per 50L fill
368
sites priced
The short answer

What does diesel cost in South Australia today?

283.9c a litre, and 48.5c more than petrol.That's the typical diesel price in South Australia right now, across 368 sites with a price in the last 72 hours. Most pay between 269.9c and 296.9c. Diesel sits 48.5c a litre above ULP 91 (235.4c), which is $24 more on a 50L fill — worth knowing if you still think of diesel as the cheaper fuel. On a 70L ute tank it's $34. Premium diesel is actually 1.0c cheaper in South Australia (282.9c against 283.9c), which usually means the sites that stock it are the competitive ones, not that the fuel is cheaper to make.

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By brand

Which brand has the cheapest diesel in South Australia?

United Petroleum at 276.4c, against 287.9c at Ampol — 11.5c a litre, or $5.75 a tank. A brand needs 25 priced diesel sites to appear.
BrandTypical
Diesel		Most pay
between		 vs all
brands		Sites
1United PetroleumNo points276.4c268.5–282.9c−7.5c32
2BPQantas, 1 pt/L281.5c273.6–289.8c−2.4c40
3Shell Reddy ExpressFlybuys, 0.5 pt/$284.9c274.9–288.9c+1.0c29
4Independent / unbrandedNo points286c277.4–310.5c+2.1c140
5AmpolEveryday Rewards, 1 pt/$287.9c276.1–289.9c+4.0c53
How these numbers are worked out. Every figure is the median price across every priced diesel site in South Australia, and every range is the 10th to 90th percentile — not the cheapest and dearest pump, so a single mistyped price can't move what you read here. Prices come from the state government fuel feeds (FuelCheck NSW, FuelPricesQLD, FuelWatch WA, Fair Fuel VIC, SA) and only count if they were updated in the last 72 hours. A price is discarded if it sits more than 30c below its own state and fuel-type median, which is how a feed's occasional nonsense figure gets caught; prices above the median are kept, because remote roadhouses genuinely charge far more. 44 prices discarded this build. Prices as at 27 October 2026, 9:15am.
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Keep going

Diesel across Australia · Diesel in New South Wales · Diesel in Victoria · Diesel in Queensland · Diesel in Western Australia · Diesel in Tasmania · The cheapest fuel brand · Fuel prices near you · Petrol price cycles

Common questions

Asked and answered

What is the average diesel price in South Australia?

The typical (median) diesel price is 283.9c a litre, with most sites between 269.9c and 296.9c, across 368 sites priced in the last 72 hours as at 27 October 2026, 9:15am.

Why is diesel more expensive than petrol?

Diesel is 48.5c a litre above ULP 91 in South Australia right now — $24 on a 50L fill. Australian diesel is largely imported and carries a different excise and refining path from petrol, and demand is driven by freight rather than cars, so the two prices move on different cycles. What this page can tell you is the size of the gap today, not what it will be next month.

Is premium diesel worth it?

Premium diesel is 1.0c a litre less than standard here — 282.9c against 283.9c. Whether the detergent additives are worth it depends on your engine and how you drive; the price difference, at least, is small.

Which servo has the cheapest diesel in South Australia?

United Petroleum has the lowest typical diesel at 276.4c, then BP at 281.5c. The spread within any one brand is usually wider than the gap between brands, so check the sites near you rather than driving to a sign.