It measures your impact on climate change in tons of carbon dioxide (CO2) per year.

• Our carbon footprint shows a car's CO2 emissions in tons per year.
• Your choice of vehicle has the biggest impact on your carbon footprint.
• It's all about fuel economy: 1 gallon of gasoline = 20 lbs. of CO2.

* Does not include CO2 from public transportation and air travel.

You can personalize the carbon footprint estimates by clicking on Use Your Gas Prices & Annual Miles in the upper left corner of the Find-a-Car page.