Diesel prices in Australia
Diesel prices move with global oil prices, the Australian dollar and refinery margins, and they can change faster than petrol. For trucks, farms, mines and tradies, diesel is often the biggest running cost, so a small change per litre adds up quickly.
The board above shows each capital city's average and lowest price, whether the figure comes from a live state feed or a labelled estimate, and when it was updated. Use the cost box to turn a cents-per-litre change into dollars for your own fill-up.
Last reviewed by the myCalculator Editorial Team. General information only, not financial or tax advice.
Frequently asked questions
Why is diesel more expensive than petrol?
Diesel often costs more per litre than petrol because of global demand for diesel, refining margins and supply constraints. Excise is the same per litre for both fuels, so the difference usually comes from the wholesale price.
Which Australian city has the cheapest diesel?
It changes day to day. The table is sorted by average price so the cheapest capital city is at the top, and each city page has its own fuel calculator.
Can businesses claim back the fuel tax on diesel?
Many businesses can claim Fuel Tax Credits for diesel used in eligible off-road and heavy vehicle activities. The truck diesel calculator estimates the credit for your usage; confirm eligibility with the ATO.
How do I work out the cost of a diesel fill-up?
Multiply litres by the price per litre. A 100 L fill-up at $2.00 per litre costs $200. Use the box above to see the extra cost of a price change.