Petrol Price Fluctuations: Australia's Complex Dynamic

why does petrol price change in australia

Petrol prices in Australia have been on an upward trajectory, with motorists facing rising fuel costs. The price of petrol in Australia is influenced by various factors, including the international benchmark price, the strength of the Australian dollar, and local competition. The recent outbreak of war in the Middle East has further contributed to increasing crude oil prices, impacting the cost of fuel. Additionally, the Australian government's fuel excise cut ended, resulting in rising prices at the pump. Understanding the factors influencing petrol prices in Australia is essential for motorists to navigate the financial implications of their fuel consumption.

Characteristics Values
Petrol price cycle The regular movement of petrol prices going up and down over several days or weeks
Factors influencing the price cycle Pricing decisions made by various petrol retailers, the international benchmark price, the strength of the Australian dollar, and the level of competition in the marketplace
Cities with a petrol price cycle Sydney, Melbourne, Brisbane, Perth, and Adelaide
Cities without a petrol price cycle Canberra, Hobart, and Darwin
Average price of Unleaded 91 fuel (May 2024) 1.93 cents-per-litre
Average national retail price for unleaded 91 (August 2023) $2.06 a litre
Average price in Melbourne (August 2023) $2.16 a litre
Average price in Adelaide (August 2023) $1.94 a litre
Average price in Brisbane (August 2023) $1.97 a litre
Average price in Perth (August 2023) $2.05 a litre
Average price in Sydney (August 2023) $2.10 a litre

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International benchmark price

The international benchmark price is the single biggest factor affecting the long-term price of petrol in Australia. It is set in US dollars and is linked to crude oil prices, as crude oil is a major production input. Crude oil is an internationally traded commodity, and its price is determined by changing global demand and supply factors.

Global oil prices change for many reasons, including manufacturing costs, supply and demand, competition, and global conflicts. For example, Russia's invasion of Ukraine has made the global oil market volatile, pushing prices up. The price of oil is also subject to the exchange rate, which rises and falls.

When the Australian dollar is low, the price of fuel is higher, and vice versa. However, fuel prices do not necessarily fall every time the Australian dollar moves higher against the US dollar. This is because fuel wholesalers and retailers have different costs that they need to recover through their pricing, including wharfage, freight, insurance, transport, storage, salaries, rent, and other utilities.

Changes in international benchmark prices can take around two weeks to work their way through the supply chain in Australian cities, and longer in regional areas.

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Australian dollar value

The price of fuel in Australia is set by the market and is influenced by several factors, including international benchmark prices, the value of the Australian dollar, and local factors such as competition levels and retailer pricing decisions.

International benchmark prices, such as the Singaporean benchmark, are traded in US dollars. This means that the value of the Australian dollar relative to the US dollar can significantly impact fuel prices in Australia. When the Australian dollar weakens against the US dollar, Australians may experience higher fuel prices, as was the case in 2024 when Australians faced record petrol prices due in part to a weak Australian dollar.

However, it is important to note that a stronger Australian dollar does not always result in lower fuel prices. Fuel wholesalers and retailers have different costs that they need to recover through their pricing strategies. Additionally, other factors, such as global supply and demand for crude oil, can also influence fuel prices.

The impact of the Australian dollar's value on fuel prices is more pronounced in Australia's five largest cities: Sydney, Melbourne, Brisbane, Adelaide, and Perth, where petrol price cycles are observed. These cycles are characterised by sharp increases in petrol prices over a short period, followed by gradual decreases over a longer period. The duration of each cycle can vary, and historical data can be used to predict the cheapest and most expensive days to purchase petrol.

Overall, the value of the Australian dollar is a critical factor in determining fuel prices in Australia, particularly when considering the influence of international benchmark prices set in US dollars.

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Pricing decisions by wholesalers and retailers

The level of competition in the marketplace also plays a role in pricing decisions. Greater competition can impact the profit margins of wholesalers and retailers, leading them to adjust their prices accordingly. This competitive dynamic is particularly evident in specific capital cities like Sydney and Melbourne, where pricing variations can be more pronounced due to the absence of direct competition between these cities.

The petrol price cycle, a deliberate pricing strategy employed by retailers, is another critical factor in wholesalers' and retailers' pricing decisions. This cycle involves the regular fluctuation of petrol prices over several days or weeks, with costs spiking and then falling before spiking again. The difference between the lowest and highest prices in this cycle can be significant, impacting consumers' fuel purchasing decisions.

The location of petrol stations also influences wholesalers' and retailers' pricing decisions. For example, petrol prices in Alice Springs tend to be higher than in Adelaide due to the additional transportation costs associated with the remote location.

Furthermore, public holidays and long weekends contribute to pricing decisions. Petrol retailers strategically time their prices to peak during these periods due to higher demand. However, these price peaks generally align with the average peak in the petrol price cycle rather than exceeding it.

While wholesalers' and retailers' pricing decisions are crucial, they operate within a broader context influenced by global factors, such as international benchmark prices, exchange rates, and geopolitical events that impact the supply and demand of crude oil. These external factors significantly shape the pricing landscape within which wholesalers and retailers make their pricing decisions.

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Competition in the marketplace

The level of competition in the marketplace is a significant factor influencing the profit made by fuel wholesalers and retailers. The Australian petrol market is highly competitive, with pricing decisions made by various petrol retailers affecting petrol price cycles.

Petrol price cycles refer to the regular movement of petrol prices over several days or weeks, where prices increase sharply and then decrease gradually before repeating the cycle. These cycles are influenced by the pricing decisions of petrol retailers and can help consumers decide when to buy petrol.

The competition between different capital cities in Australia, such as Sydney, Melbourne, Brisbane, Adelaide, and Perth, contributes to the variation in petrol prices across these cities. For example, Sydney and Melbourne, being in different states, do not compete directly and can have significant price differences. Adelaide, which has the cheapest fuel among capital cities, can be at the bottom of the cycle, while Melbourne, coming off the top of the cycle, can be significantly more expensive.

The availability of fuel discount coupons from major supermarkets and the emergence of electric vehicles (EVs) also impact the competition in the marketplace. Consumers can collect coupons to obtain cheaper fuel options, and the increasing popularity of EVs may lead to a decrease in petrol demand over time.

Additionally, the cost of transporting fuel to different locations in Australia can affect the level of competition. For instance, petrol prices in Alice Springs tend to be higher than in Adelaide due to the additional transportation costs.

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Supply and demand

The price of petrol in Australia is influenced by several factors, including global events, the value of the Australian dollar, and local market competition. However, the most significant factor affecting petrol prices in Australia is the law of supply and demand in the global market.

The basic economic principle of supply and demand states that when demand for a product increases and supply decreases, prices rise. Conversely, when demand decreases and supply increases, prices fall. In the context of petrol prices in Australia, several factors influence supply and demand dynamics. Firstly, global demand for oil has been at an all-time high due to strong summer air travel, increased oil use in power generation, and surging Chinese petrochemical activity. Additionally, decisions made by oil-producing countries, such as the OPEC+ group, to lower oil production, can significantly impact supply and, consequently, prices. For example, OPEC+'s decision to cut oil production in July 2022 contributed to rising crude oil prices.

The Australian market's reliance on imported oil makes it vulnerable to fluctuations in the global supply and demand for oil. When global supply decreases or demand increases, the availability of oil in Australia is affected, driving up prices. This dynamic was evident during the 1979 oil crisis, when a reduction in global oil production by 4% led to a significant increase in crude oil prices.

Furthermore, the value of the Australian dollar relative to the US dollar, the currency in which oil is traded, also impacts supply and demand dynamics. A weaker Australian dollar means that oil becomes more expensive for Australian buyers, driving up petrol prices. Conversely, a stronger Australian dollar can lead to lower petrol prices as the same amount of Australian dollars can purchase more oil on the global market.

While supply and demand are the primary drivers of petrol prices in Australia, other factors also play a role. Global events, such as Russia's invasion of Ukraine and conflicts in the Middle East, can impact oil supply and prices. Additionally, local market competition and pricing decisions by wholesalers and retailers can also influence the final price that consumers pay for petrol in Australia.

Frequently asked questions

Petrol prices in Australia are influenced by a multitude of factors, including the international benchmark price, the strength of the Australian dollar, and local competition.

The international benchmark price for petrol is linked to crude oil prices, which are determined by global supply and demand. Changes in the international benchmark price can take around two weeks to impact Australian cities, and even longer in regional areas.

Petrol is traded in US dollars, so a weak Australian dollar means higher prices at the pump.

Competition in the marketplace influences the profit made by wholesalers and retailers. For example, prices in certain capital cities like Sydney and Melbourne may vary due to a lack of direct competition.

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