Calculate the fuel cost of any drive or road trip in Australia
Average Australian petrol price is around $1.90–$2.10/L (2025-26)
Fuel cost = (distance ÷ 100) × fuel efficiency (L/100km) × price per litre. For example, a 500 km trip in a car that uses 10 L/100km at $2.00/L would cost 500 ÷ 100 × 10 × $2.00 = $100.
The average fuel efficiency of Australian passenger vehicles is around 10–12 L/100km for petrol cars, 7–9 L/100km for modern SUVs, and 5–7 L/100km for hybrid vehicles. Electric vehicles have no fuel consumption.
Petrol prices in Australia fluctuate weekly based on global oil prices, but the average price in 2025-26 ranges from approximately $1.85–$2.10/L for unleaded 91. Prices are typically highest in remote and regional areas.
L/100km (litres per 100 kilometres) is the standard fuel efficiency measurement used in Australia. It represents how many litres of fuel your vehicle consumes for every 100 kilometres driven. Lower numbers mean better fuel efficiency.
Key tips: maintain correct tyre pressure, accelerate and brake smoothly, use cruise control on highways, reduce air conditioning use, remove unnecessary weight from your car, and ensure your vehicle is regularly serviced.