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Transportation and Climate

Regulations & Standards: Light-Duty

passenger vehicles in a traffic flow
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The National Program for greenhouse gas emissions (GHG) and fuel economy standards was developed jointly by the Environmental Protection Agency (EPA) and the National Highway Traffic Safety Administration (NHTSA) and applies to light duty cars and trucks in model years 2012-2016 (first phase) and 2017-2025 (second phase).

Together the final standards are projected to result in an average industry fleetwide level of 163 grams/mile of carbon dioxide (CO2) in model year 2025, which is equivalent to 54.5 miles per gallon (mpg) if achieved exclusively through fuel economy improvements. The program is projected to:

  • Cut 6 billion metric tons of GHG over the lifetimes of the vehicles sold in model years 2012-2025.
  • Save families more than $1.7 trillion in fuel costs
  • Reduce America’s dependence on oil by more than 2 million barrels per day in 2025.

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