How we worked it out
Updated as you change the numbers.
- CO₂ = gallons used × emission factor (8,887 g per gallon of gasoline, 10,180 g per gallon of diesel).
Method and assumptions
These are tailpipe CO₂ only; the EPA estimates a typical passenger vehicle emits about 4.6 metric tons a year. Fuel production and other greenhouse gases add more.
Questions
How much CO₂ does driving 12,000 miles at 30 mpg emit?
About 3.55 metric tons.
Sources
Method and figures checked on . Every worked answer on this page is covered by an automated test. Found a mistake? Tell us.