Explaining Electric Vehicle’s Miles per kWh Concept: Complete Guide

One of the biggest concerns with an electric car is how far will it travel before the battery dies out. This is what prevents most car enthusiasts from shifting towards electric vehicles. While Electric vehicles are a cheaper option compared to fuel-based cars, there are still significant costs involved. You also need to measure how efficient the car is while driving and while charging. Electric cars are built to be efficient, so they need to consume energy in such a way that it doesn’t impact the environment. Even if you’re driving an electric car, the energy that goes behind charging your car comes from fossil fuels. The efficiency of an electric car is based on how much electricity a car needs to travel to a particular distance. It will look like 34 kWh per 100 miles or 340 Wh per mile. To make things more confusing, there are manufacturers who offer Kms instead of miles. kWh and Wh refer to kilowatt-hour and watt-hour, and batteries in EVs are measured in kWh.

Some specific manufacturers such as BMW have been using Ah (amp-hour) as a unit of measurement and don’t plan to change. Amid all this technical jargon, it’s almost impossible to calculate miles per kWh. Electric car economy similar to fuel-based cars change almost all the time, a battery’s efficiency depends on several external factors as well such as outside temperature, wind speed, and rainfall. Here’s a simple table to help you make an educated decision on your next EV:

ScoreWh/mileWh/kmkWh/100 mileskWh/100 kmMiles/kWh
Same as burning fuel296+184+31+19+0-2.9

Also, it’s not as simple as choosing a car with the highest efficiency, some cars with incredibly high efficiency offer an average of just 80 miles. Similarly, Tesla Model S Performance has a range of 367 miles but it is still one of the least efficient cars.


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