It supports miles per gallon (MPG), litres per 100 km (L/100km), kilometres per litre (km/L), and miles per litre (mi/L).
MPG measures how far you travel per unit of fuel (higher is better). L/100km measures how much fuel you use per 100 km (lower is better).
US gallons and UK gallons are different sizes. 1 US MPG equals approximately 1.201 UK MPG.
A fuel-efficient petrol car achieves 50+ MPG (UK) or 5-6 L/100km. Hybrid cars can achieve 60-80 MPG. Electric vehicles are measured in miles per kWh instead.
Divide the trip distance by your fuel efficiency (km/L or MPG), then multiply by the fuel price per litre or gallon.
US and UK gallons are different sizes. 1 UK gallon = 1.201 US gallons. A car rated at 40 UK MPG is approximately 33 US MPG.
Diesel cars typically achieve 50-70 MPG (UK) or 4-5.5 L/100km, which is generally better than equivalent petrol cars.