MPGe Calculator to Assess Energy Efficiency

April 4, 2023
Tesla Model Y

Comparing the energy efficiency of EV and ICE vehicles: exploring simple and scientific methods

In recent years, more and more people have been choosing electric vehicles over traditional internal combustion engine (ICE) vehicles. However, many still wonder how to compare the energy efficiency of electric vehicles and ICE vehicles. In this article, we'll explore two interesting methods of comparing these types of cars.

The first method involves using specialized calculators that convert the energy consumption of electric vehicles, measured in kilowatt-hours (kWh) per 100 kilometers, and the fuel consumption of ICE vehicles, measured in liters of fuel per 100 kilometers. This allows both metrics to be brought to a common denominator and compared.

One such calculator uses a scientific approach based on the concept of MPGe (Miles Per Gallon Equivalent), which is an equivalent fuel consumption in miles. MPGe is a measure that allows the energy efficiency of different types of vehicles to be compared. Although this method is based on scientific principles, you can use our calculator to compare without delving into mathematical formulas. Thus, a Tesla Model Y with a consumption of 21 kWh/100 km has a fuel consumption equivalent of just 2.36 liters of gasoline per 100 km.

The second comparison method is less scientific but still interesting. It involves comparing energy consumption and fuel consumption through energy and fuel prices, respectively. This allows you to evaluate the economic efficiency of using an electric vehicle compared to a gasoline or diesel vehicle. We have created another calculator for this method. In the spring of 2023, in the Netherlands, with average prices of €0.35 per kWh and €1.85 per liter of gasoline, the same Tesla Model Y with a consumption of 21 kWh/100 km has a fuel consumption equivalent of 3.97 liters per 100 km.

As you can see, both methods show that electric vehicles are more energy-efficient than most ICE vehicles and even hybrids.

If you own an electric vehicle, the ARBA Auto app allows you to continuously monitor its energy efficiency, as the app automatically calculates all the aforementioned metrics based on the data entered about charging sessions.