How the EV vs Gas Savings Calculator works
Compare estimated EV and gas vehicle energy costs. Adjust the inputs above, then use the calculate button to generate a fresh estimate based on the numbers you entered.
The result is designed to give you a quick planning number, plus a short breakdown of the major figures behind it. You can reset the form at any time and try a different scenario.
When to use this calculator
Use this EV vs gas savings calculator to compare annual energy costs for an electric vehicle and a gas vehicle. It is useful when fuel or charging costs are a major part of your vehicle decision.
Formula
Annual savings = annual gas cost - annual EV charging cost
- Annual distance is kilometres driven per year.
- Gas cost uses fuel economy and price per litre.
- EV cost uses electricity consumption and price per kWh.
Worked example
For 18,000 km per year, 8.5 L/100 km gas use at $1.65 per litre and 18 kWh/100 km EV use at $0.16 per kWh, the calculator estimates annual energy savings.
Common mistakes
- Comparing energy cost only and ignoring purchase price or insurance.
- Using public charging rates when most charging is at home, or the reverse.
- Assuming winter efficiency is the same as mild-weather efficiency.
FAQs
Does this include maintenance savings?
No. It compares fuel and charging energy costs only.
Should I use home or public charging prices?
Use the price that best matches where you expect to charge most often.
Can EV efficiency vary?
Yes. Temperature, speed, tires and driving style can change energy use.