Petrol price cycles

Petrol prices move up and down in regular patterns or cycles. The cheapest and most expensive days to buy petrol can change from cycle to cycle. Use price cycles to help you decide when to buy petrol.

Petrol price cycles in capital cities

Sydney Melbourne Brisbane Adelaide Perth

A petrol price cycle is a movement in retail price from a low point (or trough) to a high point (or peak) to a subsequent low point. In these cycles, prices steadily go down for a period followed by a sharp increase.

Price cycles are the result of deliberate pricing policies of petrol retailers, and are not directly related to changes in wholesale costs.

The duration of petrol price cycles in Sydney, Melbourne, Brisbane and Adelaide varies from cycle to cycle, and has increased in recent years. In 2017 to date, price cycle durations in these cities have ranged from a low of 11 days to a high of 61 days.

Disclaimer

Historical data can only give an indication of the cheapest and most expensive days to buy petrol in the future, so consumers should use this information as a general guide only.

The charts are updated daily from Monday to Friday at around midday, and show average daily prices for the last 45 days. Updates on Mondays include prices for the preceding Friday, Saturday and Sunday.

Buying tips are usually updated around midday on Monday, Wednesday and Friday

The buying tips may not always seem apparent from the charts. This is because the charts show historical prices.

The charts show average daily regular unleaded petrol for all cities except Sydney, which shows E10 prices.

Petrol prices in Sydney

Buying tip (updated Monday, Wednesday and Friday):

  • prices are decreasing but they are likely to decrease further
  • if possible, motorists should delay buying petrol until later.

The chart below shows daily average E10 petrol prices in Sydney over the past 45 days.

Daily average E10 petrol prices in Sydney over the past 45 days
Source: FUELtrac

Information on the past five price cycles in Sydney is shown below:

First day of cycle (low price) No. of days to highest price in the cycle Date of highest price in the cycle Days to next cycle (next low price) Total days in cycle
Tue 04 Jul 17 7 Tue 11 Jul 17 23 30
Thu 03 Aug 17 7 Thu 10 Aug 17 21 28
Thu 31 Aug 17 6 Wed 06 Sep 17 20 26
Tue 26 Sep 17 8 Wed 04 Oct 17 13 21
Tue 17 Oct 17 6 Mon 23 Oct 17 19 25

Petrol prices in Melbourne

Buying tip (updated Monday, Wednesday and Friday):

  • prices are decreasing but they are likely to decrease further
  • if possible, motorists should delay buying petrol until later.

The chart below shows daily average regular unleaded petrol prices in Melbourne over the past 45 days.

Daily average regular unleaded petrol prices in Melbourne over the past 45 days.
Source: FUELtrac

Information on the past five price cycles in Melbourne is shown below:

First day of cycle (low price) No. of days to highest price in the cycle Date of highest price in the cycle Days to next cycle (next low price) Total days in cycle
Tue 18 Apr 17 5

Sun 23 Apr 17

32 37
Thu 25 May 17 3 Sun 28 May 17 39 42
Thu 06 Jul 17 5 Tue 11 Jul 17 30 35
Thu 10 Aug 17 6

Wed 16 Aug 17

33 39
Mon 18 Sep 17 7 Mon 25 Sep 17 22 29

Petrol prices in Brisbane

Buying tip (updated Monday, Wednesday and Friday):

  • prices are decreasing but they are likely to decrease further
  • if possible, motorists should delay buying petrol until later.

The chart below shows daily average regular unleaded petrol prices in Brisbane over the past 45 days.

Daily average regular unleaded petrol prices in Brisbane over the past 45 days.
Source: FUELtrac

Information on the past five price cycles in Brisbane is shown below:

First day of cycle (low price) No. of days to highest price in the cycle Date of highest price in the cycle Days to next cycle (next low price) Total days in cycle

Mon 05 Jun 17

5

Sat 10 Jun 17

36

41

Sun 16 Jul 17

4

Thu 20 Jul 17

27

31

Wed 16 Aug 17 7 Wed 23 Aug 17 27 34
Tue 19 Sep 17 6 Mon 25 Sep 17 24 30
Thu 19 Oct 17 6 Wed 25 Oct 17 16 22

Petrol prices in Adelaide

Buying tip (updated Monday, Wednesday and Friday):

  • prices are increasing
  • if motorists shop around they may find some retailers that have not yet increased prices.

The chart below shows daily average regular unleaded petrol prices in Adelaide over the past 45 days.

Daily average regular unleaded petrol prices in Adelaide over the past 45 days.
Source: FUELtrac

Information on the past five price cycles in Adelaide is shown below:

First day of the cycle (low price) No. of days to highest price in the cycle Date of highest price in the cycle Days to next cycle (next low price) Total days in cycle

Tue 27 Jun 17

6

Mon 03 Jul 17

23

29

Wed 26 Jul 17

7

Wed 02 Aug 17

15

22

Thu 17 Aug 17

9

Sat 26 Aug 17

18

27

Wed 13 Sep 17 6 Tue 19 Sep 17 23 29
Thu 12 Oct 17 5 Tue 17 Oct 17 16 21

Petrol prices in Perth

Buying tip

Perth currently has regular weekly petrol price cycles, with prices generally peaking on Tuesday and then decreasing to a low on Monday.

The chart below shows average daily regular unleaded petrol prices in Perth over the past 45 days.

Daily average regular unleaded petrol prices in Perth over the past 45 days.
Source: FUELtrac

Information on the past five price cycles in Perth is shown below:

First day of cycle (low price)

No. of days to highest price in the cycle

Date of highest price in the cycle

Days to next cycle (next low price)

Total days in cycle

Mon 09 Oct 17

1

Tue 10 Oct 17

6

7

Mon 16 Oct 17 1 Tue 17 Oct 17 6 7
Mon 23 Oct 17 1 Tue 24 Oct 17 6 7
Mon 30 Oct 17 1 Tue 31 Oct 17 6 7
Mon 06 Nov 17 1 Tue 07 Nov 17 6 7

If you have information that a fuel retailer is not competing fairly

Contact the ACCC

More information

Petrol, diesel and LPG
Monitoring of the Australian petroleum industry - reports

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Audience