Trip Fuel & Cost Calculator
Calculate fuel costs for any Australian trip — with carbon emissions, travel time, and live local prices.
Headwinds, extreme heat (increasing A/C load), or wet road surfaces can reduce mileage by up to 15%. Verify driving forecasts before departure.
Check weather warnings on BOM ↗Australian Fuel Prices & Trip Planning
Whether you're planning a weekend road trip up the coast, managing a fleet of work utes, or calculating costs for a cross-country flight in a Cessna, predicting your fuel expenses accurately is critical. Australian fuel prices fluctuate wildly between states, cities, and regional areas.
Our advanced trip fuel calculator automatically does the math for you. Simply input your vehicle's average fuel economy (litres per 100km), the total distance of your journey, and the current pump price.
Unleaded & Premium Petrol (U91, 95, 98)
The majority of Australian passenger cars run on Unleaded 91 or E10. However, European cars and high-performance vehicles often require Premium Unleaded (95 or 98 RON). Premium fuels typically cost 15 to 30 cents more per litre, but can sometimes yield slightly better fuel efficiency.
Diesel & Heavy Vehicles
Diesel is heavily utilized in Australia for 4x4s, SUVs, and commercial transport. While diesel vehicles often boast superior fuel economy (lower L/100km), the price per litre for diesel has historically seen different seasonal fluctuations compared to unleaded fuel.
Frequently Asked Questions
How is fuel cost calculated for a trip in Australia?
Fuel cost is calculated using a straightforward formula: (Distance ÷ 100) × Fuel Efficiency (L/100km) × Fuel Price ($/L). For example, a 500km trip in a car that uses 8L/100km at a price of $2.00/L will cost exactly $80.00.
How much CO2 does my road trip produce?
Burning one litre of petrol produces approximately 2.3 kg of CO2. A 500 km trip in a car consuming 8L/100km burns 40 litres of fuel, producing 92 kg of CO2. That's roughly equivalent to the carbon absorption of 4 mature trees over one year. Our calculator now includes this estimate automatically.