Federal Gasoline Regulations
The Clean Air Act requires EPA to regulate fuels and fuel additives for use in motor vehicle, motor vehicle engine, or nonroad engine or nonroad vehicle if such fuel, fuel additive or any emission products causes or contributes to air or water pollution that may endanger the public health or welfare. EPA must also address emission products of such fuel or fuel additives that may impair any emission control devices used on vehicles or engines to reduce harmful emissions.
Gasoline regulations are under 40 CFR Part 80 (“Regulation of Fuels and Fuel Additives”): subparts A (general provisions, applying to all 40 CFR Part 890 fuels programs), B (controls and prohibitions), C (oxygenated gasoline), D & E (reformulated gasoline), G (detergent gasoline program), H & O (gasoline sulfur) and J & L (gasoline toxics).
Learn more about gasoline regulation requirements at the e-CFR.
Gasoline sulfur regulations:
- Tier 3 motor vehicle emission and fuel standards
- Tier 2 motor vehicle emission standards and gasoline sulfur control requirements
Gasoline Mobile Source Air Toxics regulations:
Reformulated gasoline (RFG) regulations:
- Removal of the Federal Reformulated Gasoline Program from the Northern Kentucky Portion of the Cincinnati-Hamilton Ozone Maintenance Area
- Regulation of Fuel and Fuel Additives: Reformulated Gasoline Requirements for the Atlanta Covered Area
- Modification of Baselines for Gasoline Produced or Imported for Use in Hawaii, Alaska, and U.S. Territories
- Regulation of Fuel and Fuel Additives: Refiner and Importer Quality Assurance Requirements for Downstream Oxygenate Blending and Requirements for Disposition of Pipeline Interfaces
- Regulation of Fuel and Fuel Additives: Removal of Reformulated Gasoline Oxygen Content Requirement
- National and California - Removal of Reformulated Gasoline Oxygen Content Requirement and Revision of Commingling Prohibition to Address Non-Oxygenated Reformulated Gasoline
- Modifications to Standards and Requirements for Reformulated and Conventional Gasoline Including Butane Blenders and Attest Engagements
- Alternative Test Method for Olefins in Gasoline
- Gasoline and Diesel Fuel Test Methods
- Extension of the Reformulated Gasoline Program to Maine’s Southern Counties
- Extension of the Reformulated Gasoline Program to the East St. Louis, Illinois Ozone Non-attainment Area (2015)
- Extension of the Reformulated Gasoline Program to the St. Louis, Missouri, Moderate Ozone Non-attainment Area (2014)
- Modification of the Covered Areas Provision for Reformulated Gasoline - RE: Former Non-attainment Areas
- Extension of the Reformulated Gasoline Program to the Phoenix, Arizona Moderate Ozone Non-attainment Area
- Removal of the RFG Program from the Phoenix, Arizona Serious Ozone Non-attainment Area
- Transitional and General Opt-out Procedures for Phase II Reformulated Gasoline
- General Procedures to Opt Out of the RFG Requirements
- Extension of Stay of the RFG Program: parts of NY, PA, and ME
- Original Standards for Reformulated and Conventional Gasoline Rule (1994)
Gasoline Reid Vapor Pressure (RVP) regulations:
- Relaxation of the Federal Reid Vapor Pressure (RVP) Gasoline Standard for the Atlanta RVP Area
- Relaxation of the Federal Reid Vapor Pressure (RVP) Gasoline Volatility Standard for Baton Rouge, Louisiana
- Relaxation of the Summer Gasoline Volatility Standard for Shelby County (Memphis), Tennessee
- Relaxation of the Summer Gasoline Volatility Standard for Several Parishes in Louisiana
- Relaxation of the Summer Gasoline Volatility Standard for Davidson, Rutherford, Sumner, Williamson, and Wilson Counties in Tennessee (the “Middle Tennessee Area”)
- Relaxation of Summer Gasoline Volatility Standard for Mecklenburg and Gaston counties, North Carolina Direct final action
- Relaxation of Summer Gasoline Volatility Standard for Jefferson and Shelby counties, Alabama (“the Birmingham area”)
- Relaxation of Summer Gasoline Volatility Standard for Florida and the Raleigh-Durham-Chapel Hill Area (Triangle Area) and the Greensboro/Winston-Salem/High Point Area (Triad Area) in North Carolina
- Alternative Test Method for Olefins in Gasoline
- Proposed Regulation of Fuels and Fuel Additives: Federal Volatility Control Program in the Denver-Boulder-Greeley-Ft. Collins-Loveland, Colorado, 1997 8-Hour Ozone Nonattainment Area
- Direct Final Rule Approving Relaxation of Summer Gasoline Volatility Standard for Grant Parish Area
- Proposed Relaxation of Summer Gasoline Volatility Standard for Denver/Boulder Area
- Volatility Regulations for Gasoline and Alcohol Blends
E15 Regulations
Learn more about ethanol waivers.
Substantially Similar Interpretive Rules
- 2008 Interpretive Rule for the term "Substantially Similar"
- 1991 Interpretive Rule for the term "Substantially Similar"
- 1981 Interpretive Rule for the term "Substantially Similar"
Fuel Additives