Cheapest fuel brand › South Australia

The cheapest fuel brand in South Australia

X Convenience at 226.5c a litre, 19.4c below Mobil. Every brand in South Australia ranked on today's prices.

226.5c
cheapest · X Convenience
19.4c
cheapest to dearest
$9.70
a 50L fill
10
brands ranked
The short answer

Which brand is cheapest in South Australia?

X Convenience, at 226.5c a litre.On today's prices the cheapest brands in South Australia are X Convenience (226.5c), United Petroleum (227.5c), Ampol Foodary (231.9c). The dearest is Mobil at 245.9c — a spread of 19.4c a litre, or $9.70 on a 50L fill, for the same fuel on the same day. Brands that earn points run about 1.5c a litre dearer here than those that don't — $0.75 a tank, which is usually more than the points come back to.

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The ranking

Every brand in South Australia, cheapest first

Typical ULP 91, and the band most sites fall in. A brand needs 25 priced sites to appear.
BrandTypical
ULP 91		Most pay
between		 vs all
brands		Sites
1X ConvenienceNo points226.5c221.9–234.9c−8.9c44
2United PetroleumNo points227.5c221.6–239.5c−7.9c32
3Ampol FoodaryEveryday Rewards, 1 pt/$231.9c220.5–235.9c−3.5c32
4CaltexNo points232.9c225.9–249.9c−2.5c27
5Shell Reddy ExpressFlybuys, 0.5 pt/$234.4c227.9–244.9c−1.0c167
6EG AmpolEveryday Rewards, 1 pt/$234.4c223.6–246.9c−1.0c28
7BPQantas, 1 pt/L237.9c230.8–249c+2.5c38
8AmpolEveryday Rewards, 1 pt/$244.9c239.9–257.9c+9.5c51
9Independent / unbrandedNo points245.9c229.5–267.9c+10.5c127
10MobilNo points245.9c222.5–264.5c+10.5c30
How these numbers are worked out. Every figure is the median price across every priced 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.
Worth knowing

Ampol and Ampol Foodary are not the same price

Same company, same points program, 13.0c a litre apart in South Australia. Ampol Foodary sites run a typical 231.9c against 244.9c at sites branded plain Ampol — $6.50 a tank, and you earn Everyday Rewards at both. If you have a choice of the two, the Foodary is usually the cheaper one.
By brand

Prices for one brand

United Petroleum
227.5c
typical ULP 91 · 32 sites · No points
Ampol Foodary
231.9c
typical ULP 91 · 32 sites · Everyday Rewards, 1 pt/$
Caltex
232.9c
typical ULP 91 · 27 sites · No points
Shell Reddy Express
234.4c
typical ULP 91 · 167 sites · Flybuys, 0.5 pt/$
EG Ampol
234.4c
typical ULP 91 · 28 sites · Everyday Rewards, 1 pt/$
BP
237.9c
typical ULP 91 · 38 sites · Qantas, 1 pt/L
Ampol
244.9c
typical ULP 91 · 51 sites · Everyday Rewards, 1 pt/$
Mobil
245.9c
typical ULP 91 · 30 sites · No points
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Every state compared · Cheapest brand in New South Wales · Cheapest brand in Victoria · Cheapest brand in Queensland · Cheapest brand in Western Australia · Cheapest brand in Tasmania · Fuel prices near you · Petrol price cycles · Points for fuel compared

Common questions

Asked and answered

Which fuel brand is cheapest in South Australia?

X Convenience, at a typical 226.5c a litre for ULP 91 as at 27 October 2026, 9:15am. United Petroleum and Ampol Foodary follow at 227.5c and 231.9c.

How much can you save by picking the right brand?

The spread between the cheapest and dearest brand is 19.4c a litre, which is $9.70 on a 50L fill. Within any one brand the spread between its own sites is usually wider than that, so the servo matters more than the sign.

Are servos with points programs more expensive?

Brands that earn points run about 1.5c a litre dearer here than those that don't — $0.75 a tank, which is usually more than the points come back to.