EV Cost Per 100km Calculator
Calculate your EV cost per 100 km using EV efficiency and electricity price. Compare costs across all charging price tiers at a glance.
EV Cost per 100 km
Typical EV cost per 100 km in Australia
The cost to drive 100 kilometres in an EV depends mainly on the vehicle's efficiency and where you charge. Efficient EVs charged at home can be very cheap to run, while public DC charging usually costs more.
How this calculator works
This calculator estimates the electricity cost required to drive 100 kilometres in an electric vehicle. It shows costs at every common price tier so you can compare home, public and fast charging at a glance.
Formula
Cost per 100 km = EV efficiency (kWh per 100 km) × Electricity price ($ per kWh)
Cost per km = Cost per 100 km ÷ 100
Worked example
EV efficiency: 16 kWh per 100 km
Electricity price: $0.30 per kWh (Home standard rate)
Cost per 100 km: 16 × $0.30 = $4.80 per 100 km
Cost per km: $4.80 ÷ 100 = $0.05 per km
Price preset guide
Frequently asked questions
What is a typical EV running cost per km in Australia?
At a standard home electricity rate of $0.30 per kWh and a typical EV efficiency of 16 kWh per 100 km, the electricity cost works out to around $0.048 per km, or roughly $0.04 to $0.05 per km. This figure increases if the vehicle is charged mainly on public fast chargers and decreases if off peak home charging rates are used.
How much cheaper is an EV to run than a petrol car?
The difference depends on electricity prices, petrol prices and the efficiency of both vehicles. As a rough guide, a typical EV using around 16 kWh per 100 km at a home electricity rate of $0.30 per kWh costs around $4.80 per 100 km to run. A petrol vehicle using 8 litres per 100 km at $2.00 per litre costs around $16.00 per 100 km. That represents a significant ongoing saving, though the exact numbers vary depending on how and where the EV is charged.
Does electricity price affect EV running cost significantly?
Yes. Electricity price is one of the two main factors that determines EV running cost, along with vehicle efficiency. Charging at an EV off peak rate of $0.08 per kWh instead of a standard rate of $0.30 per kWh can reduce fuel cost by around 70 percent. On the other hand, relying heavily on public DC fast chargers at $0.65 per kWh or more can significantly reduce or eliminate the cost advantage over petrol for some vehicles. This is why charging behaviour has a large impact on the true running cost of an EV.
Does how I charge affect my EV running cost?
Yes, significantly. The electricity price you pay depends on when and where you charge. Charging at home overnight on an off peak tariff is usually the cheapest option. Public AC chargers are more expensive. DC fast chargers are the most expensive per kWh and can sometimes cost more per kilometre than petrol if used exclusively. Most EV owners minimise running cost by doing the majority of their charging at home and reserving public fast charging for occasional longer trips.
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