Home Back

Electric Vehicle Fuel Efficiency Calculator

MPGe Equation:

\[ MPGe = \frac{\text{Miles driven}}{\text{kWh used}} \times 33.7 \text{ (kWh/gal equivalent)} \]

miles
kWh

Unit Converter ▲

Unit Converter ▼

From: To:

1. What is MPGe?

MPGe (Miles Per Gallon equivalent) is a metric that compares the energy consumption of alternative fuel vehicles to the fuel economy of conventional gasoline vehicles. It allows consumers to compare energy efficiency across different vehicle technologies.

2. How Does the Calculator Work?

The calculator uses the MPGe equation:

\[ MPGe = \frac{\text{Miles driven}}{\text{kWh used}} \times 33.7 \text{ (kWh/gal equivalent)} \]

Where:

Explanation: The equation converts electrical energy consumption into an equivalent gasoline consumption metric for easy comparison.

3. Importance of MPGe Calculation

Details: MPGe helps consumers understand the energy efficiency of electric vehicles compared to traditional gasoline vehicles, aiding in purchase decisions and environmental impact assessments.

4. Using the Calculator

Tips: Enter miles driven and kWh used from your electric vehicle's trip data. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why use 33.7 kWh/gal as the conversion factor?
A: This is the energy content of one gallon of gasoline as defined by the EPA for consistent vehicle efficiency comparisons.

Q2: What is a good MPGe rating for an EV?
A: Most modern EVs achieve 90-130 MPGe. Higher values indicate better energy efficiency.

Q3: How does MPGe compare to traditional MPG?
A: MPGe allows direct comparison between electric and gasoline vehicles by converting electricity use to its gasoline energy equivalent.

Q4: Does MPGe account for charging losses?
A: Standard MPGe calculations use energy delivered to the vehicle (not including charging inefficiencies) unless otherwise specified.

Q5: Can I calculate MPGe for plug-in hybrids?
A: Yes, but it's more complex as you need to separate electric and gasoline portions of the drive.

Electric Vehicle Fuel Efficiency Calculator© - All Rights Reserved 2025