EV-MPG

Compare long-term fuel costs between gas and electric vehicles.

Vehicle Selection

By Vehicle Manual

Fuel Prices

Gasoline
Regular
Premium
$/kWh
Home Charging
DC Fast Charging

Vehicle Usage

Miles Driven Per Year
1,000 mi 100,000 mi
20,000 miles/year
Number of Years of Ownership
1 yr 20 yrs
5 years
Driving Mix
City Highway
50% City / 50% Highway
EV Charging Mix
Home DC Fast
80% Home / 20% DC Fast

Vehicles

No Vehicles Selected

    How It Works

    EV-MPG is a free fuel cost calculator that lets you compare gas and electric vehicles side by side. Enter any combination of vehicles, set your local fuel prices, and adjust your driving habits to see a personalized long-term cost projection.

    1. Add vehicles — search by year, make, and model, or enter efficiency manually.
    2. Set fuel prices — tap "Fetch Local Prices" to auto-fill local prices, or enter them yourself.
    3. Adjust your driving habits — set your miles per year, ownership period, city/highway mix, and EV charging mix.
    4. Compare — the chart updates in real time showing cumulative fuel cost over your ownership period.

    Why Compare EV vs Gas Fuel Costs?

    Fuel is one of the largest ongoing expenses of owning a vehicle. While electric vehicles often have higher upfront prices, their per-mile energy cost is typically much lower than gasoline — but the actual savings depend heavily on local electricity and gas prices, how many miles you drive, and whether you charge at home or rely on public DC fast chargers.

    EV-MPG makes it easy to plug in your real numbers instead of relying on national averages, so you can see what the cost difference actually looks like for your situation.

    Frequently Asked Questions

    What is mi/kWh?

    Miles per kilowatt-hour (mi/kWh) measures how efficiently an electric vehicle uses electricity — the EV equivalent of MPG. A higher number means the car travels more miles per unit of energy. Most EVs fall between 3 and 4 mi/kWh.

    How is the cost projection calculated?

    The calculator uses your vehicle's city and highway efficiency, your driving mix slider, local fuel prices, and annual mileage to compute a cost per mile. That per-mile cost is then projected across your ownership period to build the cumulative cost chart.

    What does the Driving Mix slider do?

    It lets you set what percentage of your driving is city vs highway. Because city and highway efficiency differ, this affects the blended cost-per-mile used in the projection. For example, stop-and-go city driving reduces MPG for gas cars but EVs often perform better in the city due to regenerative braking.

    What is the difference between Home Charging and DC Fast Charging?

    Home charging (Level 1/2) is typically the cheapest way to charge an EV, often costing $0.10–$0.20 per kWh depending on your utility rate. DC Fast Charging at public stations is much faster but usually costs $0.30–$0.50 per kWh or more. The EV Charging Mix slider lets you set how often you rely on each, so the calculator can blend the two rates into a realistic per-kWh cost.

    Can I compare more than two vehicles?

    Yes — you can add as many vehicles as you like. Each one gets its own line on the chart and a cost summary in the vehicle list.

    Where does the vehicle efficiency data come from?

    Efficiency figures for the vehicle lookup are sourced from the U.S. Department of Energy's fuel economy database (fueleconomy.gov), which covers model years back to 2010.

    Can I use this tool outside the US?

    This tool is designed for the US market. Fuel efficiency is displayed in MPG (miles per gallon, using US gallons), fuel prices are in US dollars, and the vehicle database is sourced from the US Department of Energy. As a result, it is not intended for use in other markets where liters, kilometers, or other currencies are standard.