The efficiency of electric vehicles is often communicated using a metric that mirrors the miles-per-gallon (MPG) standard familiar to drivers of gasoline-powered cars. This figure, sometimes called MPGe, offers a way to compare the energy consumption of electric and internal combustion engine vehicles. It represents the equivalent distance an electric vehicle can travel on the energy contained in a gallon of gasoline. For example, an electric car rated at 100 MPGe can travel as far on the energy from a full battery charge as a gasoline-powered car can travel on one gallon of gasoline.
This equivalent fuel economy rating provides a significant benefit by enabling consumers to readily assess the running costs and environmental impact of electric vehicles relative to traditional vehicles. Understanding the energy efficiency allows for informed purchasing decisions, promoting the adoption of cleaner transportation options. Furthermore, this standardization allows for a clearer understanding of improvements in battery technology and electric drivetrain efficiency over time, serving as a benchmark for progress in the electric vehicle industry. The development of this metric arose from the need to provide a relatable comparison for consumers accustomed to traditional vehicle efficiency ratings.