Compare fuel costs between vehicles, calculate annual gas expenses, and see how much you could save with a more efficient car. A 10 MPG improvement can save hundreds per year. No signup required.
Compare fuel economy between multiple vehicles.
See annual gas expenses based on your driving.
See how much you save with better MPG.
Understand the cost of low MPG vehicles.
Compare fuel costs across your options.
Find break-even for fuel-efficient upgrades.
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Fuel Economy Data:
Additional Data:
Fuel economy is one of the largest ongoing costs of vehicle ownership. A difference of just 10 MPG can mean thousands in savings over the life of the vehicle.
The federal Gas Guzzler Tax applies to new passenger cars with combined fuel economy below 22.5 MPG. The tax ranges from $1,000 to $7,700.
Small changes can add up over time.
Common questions about this tool
Multiply your annual miles by (miles per gallon)−1, then multiply by your local fuel price. Our calculator does this and can compare multiple vehicles or fuel types.
Yes. A 10 mpg improvement can save hundreds per year depending on miles driven and gas prices. For high mileage, the savings add up quickly over the life of the car.
Calculate your monthly payment with amortization schedule and total interest.
Calculate monthly lease payment, money factor, and total lease cost.
Use the 10-15% rule to find your car budget based on income.
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