Fuel Cost Calculator Australia 🇦🇺
Whether you're planning a road trip across the outback or just want to know what your daily commute costs, Fuel Smarter calculates your exact fuel cost based on your car's real-world fuel consumption (L/100km), current Australian pump prices, and how you drive. We use real route data to break your journey down by road type — urban, state roads, and motorways — since each affects fuel use differently.
Calculate your fuel cost nowCurrent Australian fuel prices — May 2026
Australian fuel prices follow a well-known weekly cycle in major cities — prices typically rise sharply on Thursdays and Fridays before falling back through the following week. Filling up on a Tuesday or Wednesday generally gives you the lowest price of the cycle. Regional and remote areas often pay significantly more than city averages due to transport costs.
How much does a typical Australian journey cost?
Based on A$1.90/litre and a typical Australian car consuming 10L/100km:
| Journey | Distance | Fuel cost (10L/100km) | Fuel cost (8L/100km) |
|---|---|---|---|
| Sydney to Melbourne | 877 km | ~A$166.60 | ~A$133.30 |
| Melbourne to Adelaide | 728 km | ~A$138.30 | ~A$110.60 |
| Sydney to Brisbane | 924 km | ~A$175.60 | ~A$140.45 |
| Perth to Fremantle | 19 km | ~A$3.60 | ~A$2.90 |
| Brisbane to Gold Coast | 78 km | ~A$14.80 | ~A$11.85 |
| Adelaide to Melbourne | 728 km | ~A$138.30 | ~A$110.60 |
Based on A$1.90/litre national average. Use our calculator for your specific vehicle and local price.
Understanding L/100km — Australia's fuel economy measure
Australia uses litres per 100 kilometres (L/100km) to measure fuel economy — unlike the UK and US which use miles per gallon (MPG). A lower L/100km number means better fuel economy. A typical Australian family car uses around 9-11L/100km in combined driving, while fuel-efficient small cars can achieve 6-7L/100km and larger SUVs and utes may use 12-15L/100km.
Converting L/100km to MPG: Divide 282.5 by your L/100km figure. So 10L/100km ≈ 28 MPG, 8L/100km ≈ 35 MPG, 6L/100km ≈ 47 MPG.
Speed limits in Australia are 100 km/h on most state roads and 110 km/h on motorways in most states. Driving at 110 km/h uses noticeably more fuel than 100 km/h — our calculator shows you exactly how much on your specific journey.