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How do you calculate the miles per kWh of an electric car?
I bought an electric car, and I want to compare how many miles I get per battery charge to my old gas tank. I want to know how many miles I get for each kWh in my electric vehicles battery. How do you calculate the miles per kWh of an electric car?
Bellina Gaskey · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
Great question! You can calculate the expected miles per kWh by dividing the battery range of the car by the battery size. If you want to calculate the actual mileage, divide the distance travelled by the energy used.
To calculate how many miles you should get for a full battery charge, find out the battery range of your electric vehicle, and its battery capacity. These things should be in your owner’s manual, or readily available on your dashboard depending on the vehicle you have.
If your EV has a range of 240 miles, and the battery capacity it 60 kWh, it’s expected to have a rating of 4 miles pper kWh (Mi/kWh)
But we all know that things can affect efficiency, like drag, driving habits, and extra weight in the vehicle. If you’re a curious person and want to figure out how much energy you’re actually using per mile, you can calculate that the same way we calculate mileage for gas vehicles.
To calculate an electric vehicles efficiency, you’ll need to know the distance you went, and how much energy you used during that distance. Divide the distance you went by the energy used, and you’ll have your actual efficiency rating.
So if your battery capacity was 60 kWh, and you
charged
to full before you drove 100 miles, and you now have 40 kWh left, we divide 100 by 20, and your efficiency is 5 Mi/kWh.Whether your car runs on gasoline or electric power you always need insurance.
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