About fuel prices
Fuel prices are influenced by many factors, including overseas and local market forces. While the ACCC does monitor petrol prices, we do not set or control them.
Fuel prices can go up and down due to a combination of factors:
- changes in international benchmark prices
- the value of the Australian dollar relative to the US dollar
- levels of competition in different areas
- pricing decisions by wholesalers and retailers.
For petrol, diesel and automotive LPG the largest component of the price you pay is represented by the international benchmark price.
The current benchmark prices for fuels sold in Australia are:
- Regular Unleaded Petrol – Singapore Mogas 95 Unleaded
- Diesel – Singapore Gasoil 10 parts per million sulphur
- LPG – Saudi Contract prices for butane and propane
Changes in international prices can take around two weeks to work their way through the supply chain in Australian cities and longer in regional areas.
Unleaded petrol prices in Australia tracked against the international benchmark
This chart shows how the price of unleaded petrol in the five largest Australian cities has been tracking against the international benchmark for the last three months.
Sources: Australian Competition and Consumer Commission, Informed Sources, Reserve Bank of Australia and Platts, the energy information division of McGraw-Hill, Inc.
As international benchmark prices for petrol, diesel and LPG are priced in US dollars (USD), a change in the value of the Australian dollar (AUD) relative to the USD may affect the domestic price of fuel.
However, don’t expect fuel prices to fall every time the Australian dollar is higher than the US dollar. This can only happen if the benchmark price remains the same or falls and other local factors don’t push prices up.
Like any other business, fuel wholesalers and retailers have different costs they need to recover through their prices. These can include wharfage, freight, insurance, transport, storage, salaries, rent, power and other utilities. On top of this, wholesalers and retailers need to make a profit in order to make their businesses viable. This margin is ultimately determined by the level of competition in the marketplace.
Transportation and storage of LPG is more expensive than for petrol and diesel because LPG must be kept as a liquid which requires specialised storage and transportation.
All fuel prices include GST of 10 per cent of the total price. For petrol and diesel you also pay the fixed Federal Government Excise of 38 cents per litre. LPG currently has a lower rate of excise than petrol and diesel. The excise on LPG is currently 5cpl and will rise by 2.5 cpl each year until it reaches 12.5 cpl in 2015.
For petrol and diesel there is also an additional cost, which reflects the higher quality of Australian fuel standards.
Some consumers think petrol prices increase by more than usual just before public holidays and long weekends.
Our detailed review of prices in the five largest cities around every public holiday found that, on average, public holiday price increases were no larger than the usual price cycle increases during the year.
These price rises may be more noticeable before holiday weekends because many motorists are making long trips and using more petrol than usual.
Petrol price cycles, where prices steadily go down followed by a sharp increase, occur in some major cities.
These cycles occur in Adelaide, Brisbane, Melbourne, Perth and Sydney.
Price cycles are the result of deliberate pricing policies of petrol retailers and not directly related to changes in costs.
The length of the price cycle, from cheapest day to cheapest day, varies from cycle to cycle. In 2012, in Adelaide, Brisbane, Melbourne and Sydney the length of the cycle has increased from ten to around fourteen days. In Perth, the cycle has consistently remained around seven days.