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  2. Green Vehicle Guide

Vehicles and Greenhouse Gases - EPA’s Role

At EPA, our team of engineers, scientists, policy analysts, lawyers, and others work together to ensure that cars and trucks on the road are as clean and efficient as possible.  We do this because we know that cleaner vehicles mean cleaner air.

Here are just some of the vehicle-related projects that we're working on:

Find out how EPA engineers test new vehicles for emissions and fuel economy
  • Testing at the National Vehicle and Fuel Emissions Laboratory
Learn about our regulations that limit emissions from new vehicles
  • Light-Duty Vehicle Greenhouse Gas Regulations and Standards
Learn how fuel-efficient technology innovations are transforming the automotive market
  • Fuel Economy and CO2 Trends
Explore trends in greenhouse gas emissions from U.S. transportation
  • Fast Facts on Transportation Greenhouse Gas Emissions
SmartWay vehicles
  • Find a SmartWay Vehicle

Green Vehicle Guide

  • Learn About Green Vehicles
    • What is a Green Vehicle?
    • Consider a SmartWay Vehicle
    • EVs and Plug-In Hybrid EVs
    • EV Charging - The Basics
    • EV Charging – The Details
    • Setting up Home EV Charging
    • Tips for EV Drivers
    • EV Myths
    • EV Testing
    • Hydrogen in Transportation
  • Help Make Transportation Greener
    • Compare Your Gas Car to an EV
    • True Cost of Car Ownership
    • Buy Green / Save Green
    • We've Done Big Things. We Can Do Big Things.
    • Promoting Green Vehicles
    • Advanced Gas and Diesel Vehicles
  • Vehicles, Greenhouse Gases & Smog
    • Smog Vehicle Emissions
    • GHG Emissions from a Typical Passenger Vehicle
    • Fast Facts on Transportation GHG Emissions in the US
    • Routes to a Lower GHG Transportation Future
    • Automotive Trends Report
    • 50 Years of Automotive Trends
  • Fuel Economy
    • Learn about the Fuel Economy Label
    • How MPG Affects Fuel Costs
    • Your Mileage May Vary
    • Testing at Our Lab
  • Transportation Down the Road
    • Self-Driving Vehicles
    • Shared Mobility
    • What if: Ideas for Reducing Transportation GHG
  • Find a SmartWay Vehicle
  • Sign up for E-Updates
Contact Us About the Green Vehicle Guide
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on April 28, 2025
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