Fuels and Fuel Additives
Regulations and Standards
Regulations & Standards
- The Diesel fuel program regulations are located in 40 CFR 80 subpart I.
- For the most updated fuel regulations, please visit the Electronic Code of Federal Regulations (e-CFR).
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Highway Diesel Rule
This rule establishes a single comprehensive national control program that regulates the heavy-duty vehicle and its fuel as a single system. The sulfur standards for highway diesel fuel took effect starting in 2006. The emissions standards for heavy-duty vehicles took effect starting in 2007.
- Final Rule (66 FR 5002, January 18, 2001)
Nonroad Diesel Rule
EPA established a comprehensive national program to reduce emissions from nonroad diesel engines by integrating engine and fuel controls as a system to gain the greatest emission reductions.
- Final Rule (69 FR 38958, June 29, 2004)
Fuel-Related Technical Amendments to the Highway and Nonroad Diesel Rules
- Amendments to the Nonroad and Highway Diesel Fuel Regulations: Direct Final Rule (70 FR 40889, July 15, 2005)
- Revisions to Motor Vehicle Diesel Fuel Sulfur Transition Provisions, and Technical Amendments to the Highway Diesel, Nonroad Diesel, and Tier 2 Gasoline Programs: Direct Final Rule (PDF) (70 FR 70498, 16 pp, 126K, November 22, 2005)
- Technical Amendments to the Highway and Nonroad Diesel Rules: Direct Final Rule (PDF) (71 FR 25706, 22 pp, 200K, May 1, 2006)
Ocean-going Vessels (Category 3 Marine Rule)
EPA adopted changes to the diesel fuel program to allow for the production and sale of diesel fuel with up to 1,000 ppm sulfur for use in Category 3 marine vessels. The regulations generally forbid production and sale of fuels with more than 1,000 ppm sulfur for use in most U.S. waters, unless operators achieve equivalent emission reductions in other ways.
- Final Rule (PDF) (75 FR 22896, 171 pp, 3.59MB, April 30, 2010)
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Please visit EPA's Transportation and Air Quality web-based repository of mobile source documents, Document Index System (DIS). This searchable repository contains regulations, Federal Register notices, policy letters, and guidance documents.
Please visit our Related Links page for other fuel related information within EPA, other U.S. Agencies, and other fuel related websites.