Free · Petrol · Diesel · EV
Fuel Cost
Calculator
See exactly what fuel costs you per trip, month and year — and compare with an electric vehicle.
Petrol & diesel
EV comparison
CO₂ per year
Advertisement
Your driving & fuel
One way, per trip
Results
Cost per year
$1,400
per trip $5.60 · per day $5.60
Fuel / year
875 L
Cost / km
$0.112
CO₂ / year
2,021 kg
EV comparison
EV cost / year
$281
You save / year
$1,119
Petrol / Diesel$1,400
EV$281
Advertisement
L/100 km vs mpg
Lower L/100 km means better efficiency. Europe uses L/100km; the US uses mpg. 7 L/100km ≈ 33.6 US mpg.
EV is 4–5× cheaper per km
At average home electricity, an EV costs about $2–3 per 100 km versus $10–12 for a typical petrol car.
Real consumption matters
Add 10–30% to official figures for city driving, cold weather and traffic when budgeting.
Advertisement
FAQ
Fuel cost FAQ
How do I calculate fuel cost per km?
Divide the fuel price per liter by the consumption in L/100km, then divide by 100. At $1.60/L and 7 L/100km, cost is 11.2 cents per km.
What is the difference between L/100km and mpg?
L/100km measures liters used per 100 km; mpg measures miles per gallon. Lower L/100km and higher mpg both mean better efficiency.
Are electric cars really cheaper to run?
Yes, usually. At $0.15/kWh and 15 kWh/100km, an EV costs about $2.25 per 100 km versus $11.20 for a 7 L/100km petrol car at $1.60/L — around 5× cheaper.
How much fuel does my car use per year?
Multiply consumption (L/100km) by annual distance (km) and divide by 100. 15,000 km at 7 L/100km uses about 1,050 liters per year.
How is CO2 calculated?
Burning one liter of petrol produces about 2.31 kg of CO2; diesel about 2.68 kg. Multiply by annual liters consumed. EVs produce zero tailpipe CO2.
Does driving style affect fuel cost?
Significantly. Aggressive acceleration, high speed and heavy loads can increase consumption by 15–40%, which directly raises your cost per km.
Why is my actual consumption higher than the official figure?
Official WLTP figures are measured in ideal conditions. Real-world city driving, cold weather, AC, traffic and driving style usually add 10–30%.
Should I include other running costs?
Fuel is only part of the picture. Insurance, maintenance, tax and depreciation matter too — especially when comparing with an EV.
EV vs petrol→
The full running-cost comparison with CO₂.
Car depreciation→
How much your car loses in value each year.
Lease vs buy→
Which is cheaper for your situation?
More auto tools