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Regulations for Emissions from Vehicles and Engines

Regulations for Smog, Soot, and Other Air Pollution from Passenger Cars & Trucks

On this page:

Overview

Passenger cars and trucks are regulated by EPA under "light-duty" vehicle programs.  EPA regulates passenger vehicles to reduce the amount of harmful emissions. There are regulations for multiple aspects of passenger vehicles, including:

  • Standards for exhaust and evaporative emissions;
  • Control of hazardous air pollutants and air toxics; 
  • National Low Emission Vehicle Program;
  • CAP 2000 (Compliance Assurance Program);
  • Onboard refueling vapor recovery; and
  • Inspection and maintenance.

List of Related Regulations

Below is a list of all regulations related to smog, soot, and other emissions from passenger cars and trucks.

Help

For help on using the table:
Click the regulation titles for additional information, including:
  • Rule summaries;
  • Regulatory impact analyses;
  • Comment summaries;
  • Rule histories; and 
  • Fact sheets.*

*Note: Rule-related materials vary by rule.

Regulation Title Regulation Date
(Year/Month)
Amendments Related to Tier 3 Motor Vehicle Emission and Fuel Standards, Nonroad Engine and Equipment Programs, and MARPOL Annex VI Implementation 2015/05
Final Rule for Control of Emissions of Hazardous Air Pollutants From Mobile Sources: Default Baseline Revision 2005/10
Direct Final Rule for Fuel Economy Regulations for Automobiles: Technical Amendments and Corrections 2009/11
Final Rule for Control of Air Pollution From New Motor Vehicles and New Motor Vehicle Engines; Regulations Requiring Onboard Diagnostic Systems on 2010 and Later Heavy-Duty Engines Used in Highway Applications Over 14,000 Pounds 2009/02
Final Rule for Control of Air Pollution from Motor Vehicles: Tier 3 Motor Vehicle Emission and Fuel Standards 2014/04
Final Rule for Clean Alternative Fuel Vehicle and Engine Conversions 2011/04
Final Rule for Emission Durability Procedures for New Light-Duty Vehicles, Light-Duty Trucks and Heavy-Duty Vehicles 2006/01
Final Rule for Nonconformance Penalties for On-Highway Heavy-Duty Diesel Engines 2012/09
Final Rule on Ozone Transport Commission; Low Emission Vehicle Program for the Northeast Ozone Transport Region 1995/01
Final Rule for Control of Air Pollution From New Motor Vehicles and New Motor Vehicle Engines: State Commitments to National Low Emission Vehicle Program 1998/01
Final Rule for Control of Air Pollution From New Motor Vehicles and New Motor Vehicle Engines: Voluntary Standards for Light-Duty Vehicles 1997/06
Final Rule for Control of Air Pollution From Motor Vehicles and New Motor Vehicle Engines; Modification of Federal Onboard Diagnostic Regulations for Light-Duty Vehicles and Light-Duty Trucks; Extension of Acceptance of California OBD 1998/12
Final Rule for Control of Hazardous Air Pollutants From Mobile Sources: Early Credit Technology Requirement Revision 2008/10
Final Rule for Revisions and Additions to Motor Vehicle Fuel Economy Label 2011/07
Final Rule for Control of Air Pollution From New Motor Vehicles: Tier 2 Motor Vehicle Emissions Standards and Gasoline Sulfur Control Requirements 2000/02
Final Rule for Fuel Economy Labeling of Motor Vehicles: Revisions To Improve Calculation of Fuel Economy Estimates 2006/12
Final Rule for Control of Emissions of Hazardous Air Pollutants From Mobile Sources - 40 CFR Parts 80 and 86 2001/03
Final Rule for Control of Hazardous Air Pollutants From Mobile Sources - 40 CFR Parts 59, 80, 85, and 86 2007/02
Final Rule for Amendments Related to Tier 3 Motor Vehicle Emission and Fuel Standards 2016/04
Final Rule for Modification of Federal Onboard Diagnostic Regulations for: LD Vehicles, LD Trucks, MD Passenger Vehicles, Complete HD Vehicles and Engines Intended for Use in HD Vehicles Weighing 14,000 Pounds GVWR or Less 2005/12

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