Automotive fuel in the CPI

Automotive fuel series in the CPI and important events affecting fuel prices and inflation



The Consumer Price Index (CPI) is an important measure of inflation in the Australian economy. The CPI measures the price change of a ‘basket’ of goods and services purchased by Australian households. According to the 2015-16 Household Expenditure Survey, on average, Australians spend approximately $2,300 on automotive fuel each year. This is reflected in the measurement of the CPI with a weight of 3.2 per cent of the CPI basket.

Automotive fuel prices are often volatile, which can have a significant impact on the rate of inflation measured by the CPI. A recent example of this was following the outbreak of COVID-19, where prices for automotive fuel fell 20 per cent in the June 2020 quarter, contributing nearly half of the record 1.9 per cent quarterly fall in the CPI.

This article explains how automotive fuel is measured in the CPI and provides a summary of some important events which have impacted fuel prices in Australia.

A brief history of Automotive fuel in the CPI

Automotive fuel has been included in the CPI since the series was first produced in 1948. Automotive fuel was initially part of the Fuel and light sub-group within the Household supplies and equipment group in the CPI. In 1974-75, the ABS conducted the first Household Expenditure Survey which provided detailed data on all areas of household consumption expenditure. Following this, in 1976, an Automotive fuel series was introduced into the CPI within the Transportation group. Over the years, the contribution of Automotive fuel to the CPI has been between 2-5 per cent.

Price collection

Prior to 2002, ABS field staff travelled to collect fuel prices from fuel retailers. Prices were obtained five working days a week from approximately 500 outlets across all capital cities. From 2002 onwards, automotive fuel prices have been obtained monthly from administrative pump price data in each capital city. Prices from all major outlets, and some independent outlets, across a wide range of locations within each capital city are collected each day, including weekends and public holidays. Approximately 500,000 prices are collected each month covering a range of fuel types including unleaded petrol, diesel and LPG.

Australian fuel prices

Australia is dependent on imports to meet domestic demand for transport fuels. This exposes Australian fuel prices to the impact of production decisions made by the Organisation of the Petroleum Exporting Countries (OPEC), which generates approximately 40 per cent of the world's total crude oil production.

Australian fuel prices are strongly linked to Singapore refined petrol and diesel price movements. Significant changes in the price of fuel are largely a result of changes in world oil prices and the level of global oil production. Domestic factors such as retail margins and the level of retail competition within the geographic location also impact Australian fuel prices.

Other factors and costs affecting fuel prices include exchange rate changes, shipping and insurance costs, port charges, terminal storage and refiner and wholesale margins.

Important events impacting the price of Automotive fuel

Automotive fuel is one of the most volatile series measured in the CPI, due to the aforementioned factors. This high level of volatility means that it is often a main driver of the CPI headline movement. Graph 1 shows major international events significantly impacting Australian fuel prices and the magnitude of their impact on the CPI's Automotive fuel series. Graph 1 also shows the impact the price of fuel has on the headline CPI movement, which can be seen by the relationship between the annual movements of the two series.


1979 Oil Crisis
1990 Invasion of Kuwait by Iraq
1999 - 2000 Recovery from 1997 Asian Financial Crisis (AFC)
2008 Global Financial Crisis (GFC)
2014 Strong production in US and Russia coupled with OPEC's decision to maintain production
2020 COVID-19 lockdown

1972 - 1979

The early 1970s saw the first global oil price shock, resulting in fuel prices increasing by 25 per cent in 1975. Following a brief period of lower inflation in the latter half of the 1970s, a second global oil price shock in 1979 saw fuel prices rise almost 50 per cent, resulting in a further acceleration in inflation.

1980 - 1988

The Iran-Iraq war, which lasted from 1980 to 1988, saw oil exports decrease from the Middle East region (a key export market), which caused fuel prices to rise further in the first half of the 1980s. Price falls in the mid and late 1980s were a result of an increase in the supply of oil following an expansion of oil production by Saudi Arabia.

1990 - 2000

The Iraq invasion of Kuwait caused oil production to decrease, leading to an increase in fuel prices in 1990. This was a temporary impact as oil production, and subsequently fuel prices, were relatively stable throughout the 1990s.

Asian demand for oil increased in the late 1990s, following the economic recovery from the Asian Financial Crisis, which resulted in a rise in global oil prices. This coincided with the introduction of the Goods and Services Tax (GST) in Australia in 2000. The GST had only a small impact on fuel prices due to a simultaneous reduction in the fuel excise levy.

2001 - 2008

From 2001, annual fuel price increases remained above 5 per cent as oil production declined and Asian demand continued to increase. However, the Global Financial Crisis (GFC) in 2008 led to a large fall in oil prices. Global uncertainty and rising unemployment in many countries during this period led to falling demand for oil, which saw fuel prices fall 20 per cent in 2009.

2014 - 2016

Following a recovery from the 2008 GFC, oil prices fell again between 2014 and 2016 reflecting strong production in the US, which saw the highest level of US oil output in more than 100 years. This, coupled with Russia's and OPEC's decision to maintain their oil production level, resulted in a global oversupply of oil.


The COVID-19 pandemic in 2020 saw another large fall in fuel prices due to lockdowns both domestically and in countries across the world, forcing businesses to close and people to stay at home. With travel restrictions in place, planes and cruise ships also sat idle. As consumer and commercial demand fell rapidly and significantly worldwide, this resulted in an oversupply of oil. Oil prices began to partially recover in mid-2020 as COVID-19 restrictions began to ease.

Price change of Automotive fuel over the decades

Graph 2 shows how the Automotive fuel series has tracked over the past five decades. The 1970s and 1980s saw significant rises in fuel prices, coinciding and contributing to high inflation. In the 1990s and 2000s, increases in fuel prices were relatively low and stable, as was the CPI. The 2010s saw even lower inflation and fuel prices finish the decade below where they were at the start of the decade following the impact of COVID-19.

Across the five decades, the increase in fuel prices was 25 per cent higher than the increase in the CPI: 1,183 per cent compared to 956 per cent.