Electric and Hybrid Vehicles Fuel Economy Calculation.

Fuel Economy Advertising Guide for New Vehicles.

Gas Guzzler Tax (Extracts).

Fuels and Fuel Additives (Extracts).

Vehicle and Engine Parameters and Specifications.

Exemption of Clean Alternative Fuel Conversions from Tampering Prohibition.

Urban Bus Rebuild Requirements.

Importation of Motor Vehicles and Engines.

Exclusions and Exemptions.

Recall Regulations.

Emission Defect Reporting.

Emission Control System - Performance Warranty and Voluntary Aftermarket Part Certification Program.

Emission Control System Performance Warranty - Short Tests.

Determination of Model Year.

Fees for Compliance Programs.

Appendices.

Emissions from Highway Vehicles and Engines.

Emission Regulations - New LD Vehicles/Trucks/Otto-cycle HD Vehicles - Test Procedures.

1994 and Later Gas-fueled New Light-duty Vehicles and Trucks, Medium-duty Passenger Vehicles - Cold Temperature Tests.

Heavy-duty Engines - Gaseous Exhaust Test Procedures.

Motorcycles - General Provisions - 1978 and Later.

Emission Regulations - 1978 and Later New Motorcycles - Test Procedures.

Selective Enforcement Auditing - New Light-duty Vehicles, Light-duty Trucks, and Heavy-duty Vehicles.

General Provisions - In-use Regulations for 1994 and Later Light-duty Vehicles and Trucks.

Smoke Exhaust Test - 1984 and Later HDE.

Fees for Motor Vehicle and Engine Compliance Program.

Selective Enforcement Auditing of New Heavy-duty Engines.

Nonconformance Penalties for Gasoline-fueled and Diesel Heavy-duty Engines and Heavy-duty Vehicles, including Light-duty Trucks.

Evaporative Test Procedures for New Gas, Natural Gas, Liquefied Petroleum Gas and Methanol Fueled Heavy-duty Vehicles.

Exhaust Test Procedures for Heavy-duty Engines.

Emission Regulations for New Gas-fueled Otto-cycle Light-duty Vehicles and Trucks - Certification Short Test Procedures.

Idle Test - 1994 and Later LDT, HDE.

Altitude Performance Adjustments - New and In-use - 1968 and Later LDV, LDT - 1970 and Later HDE - 1978 and Later Motorcycles.

Voluntary National Low Emission Program for Light-duty Vehicles and Trucks - General Provisions.

Compliance Provisions - New and In-use LD Vehicles/Trucks and Complete Otto-cycle HD Vehicles.

Manufacturer-run In-use Testing Program for Heavy-duty Diesel Engines.

Control of Emissions from New and In-use Highway Vehicles and Engines.

Clean Fuel Vehicles.

General.

Emission Standards and Certification Provisions.

Certification Averaging, Banking and Trading Provisions.

Emission Test Equipment.

Gaseous Exhaust Tests.

Selective Enforcement Auditing (SEA).

Importing Non-conforming Non-road Engines.

Manufacturer Production Line Testing Program.

Emission Defect Reporting, Voluntary Recall Program, Ordered Recalls.

Exclusions and Exemptions.

Enforcement Provisions and Prohibited Acts.

Emissions Warranty and Maintenance Instructions.

Voluntary In-use Testing.

Mandatory Greenhouse Gas Reporting (Extracts).

Part 600 - Appendices.

Fuel Economy - General Provisions.

Fuel Economy and Carbon-related Test Procedures.

Procedures for Calculating Fuel Economy Values.

Fuel Economy Labeling.

Dealer Availability of Fuel Economy Information.

Procedures for Determining Manufacturer's Average Fuel Economy.

Fuel Economy - Retrofit Devices.

Fees for Vehicle and Engine Compliance Programs.

Part 1036 - Appendices.

Overview and Applicability.

Emission Standards and Related Requirements.

Certifying Engine Families.

Testing Production Engines and Hybrid Powertrains.

In-use Testing.

Test Procedures.

Special Compliance Provisions.

Averaging, Banking, and Trading for Certification.

Definitions and Other Reference Information.

Appendices.

Overview and Applicability.

Emission Standards and Related Requirements.

Certifying Vehicle Families.

Testing Production Vehicles and Engines.

In-use Testing.

Test and Modeling Procedures.

Special Compliance Provisions.

Averaging, Banking, and Trading for Certification.

Definitions and Other Reference Information.

Overview and Applicability.

Emission Standards and Related Requirements.

Certifying Engine Families.

Testing Production-line Vehicles and Engines.

Test Procedures.

Compliance Provisions.

Averaging, Banking and Trading for Certification.

Definitions and Other Reference Information.

Applicability and General Provisions.

Equipment Specifications.

Measurement Instruments.

Calibrations and Verifications.

Engine Selection, Preparation and Maintenance.

Performing an Emission Test Over Specified Duty Cycles.

Calculations and Data Requirements.

Engine Fluids, Test Fuels, Analytical Gases and Other Calibration Standards.

Testing with Oxygenated Fuels.

Field Testing and Portable Emission Measurement Systems.

Definitions and Other Reference Information.

Methods for Unregulated and Special Pollutants.

Applicability and General Provisions.

Equipment, Measurement Instruments, Fuel, and Analytical Gas Specifications.

Dynamometer Specifications.

Coastdown.

Preparing Vehicles and Running an Exhaust Emission Test.

Electric Vehicles and Hybrid Electric Vehicles.

Calculations.

Cold Temperature Test Procedures.

Exhaust Emission Test Procedures for Motor Vehicles.

Evaporative Emission Test Procedures.

Definitions and Other Reference Material.

General Compliance Provisions for Engine Programs - Appendices.

General Compliance Provisions for Highway, Stationary and Non-road Programs - Applicability and Miscellaneous Provisions.

General Compliance Provisions for Highway, Stationary and Non-road Programs - Prohibited Actions and Related Requirements.

General Compliance Provisions for Highway, Stationary and Non-road Programs - Exemptions and Exclusions.

General Compliance Provisions for Highway, Stationary and Non-road Programs - Imports.

General Compliance Provisions for Highway, Stationary and Non-road Programs - Selective Enforcement Auditing.

General Compliance Provisions for Highway, Stationary and Non-road Programs - Reporting Defects and Recalling Engines/Equipment.

General Compliance Provisions for Highway, Stationary and Non-road Programs - Hearings.

Fuel Economy Standards Exemptions.

Relief Petitions Under the Fuel Efficiency Act.

Multistage Vehicle Manufacture.

Passenger Automobile Average Fuel Economy Standards.

Light Truck Fuel Economy Standards.

Manufacturers - Changes in Corporate Relationships.

Medium- and Heavy-duty Vehicle Fuel Efficiency Program.

Transfer and Trading of Fuel Economy Credits.

Automotive Fuel Economy Reports.

Manufacturing Incentives for Alternative Fuel Vehicles.

Fuel System Integrity of Hydrogen Vehicles.

Compressed Hydrogen Storage System Integrity.

Consumer Information.

California 2001-2014 Pollutant Standards and Test Procedures and 2009-2016 GHG Standards and Test Procedures for Passenger Cars, Light-duty Trucks and Medium-duty Vehicles.

California Exhaust Emission Standards and Test Procedures for 2004 and Subsequent Model Heavy-duty Otto-cycle Engines and Vehicles.

California Exhaust Emission Standards and Test Procedures for 2004 and Subsequent Model Heavy-duty Diesel Engines and Vehicles.

California Exhaust Emission Standards and Test Procedures for 2005-2008 Model Zero-emission Vehicles, and 2001-2008 Model Hybrid Electric Vehicles, in the Passenger Car, Light-duty Truck and Medium-duty Vehicle Classes.

California Exhaust Emission Standards and Test Procedures for 2009 through 2017 Model Zero-emission Vehicles and Hybrid Electric Vehicles, in the Passenger Car, Light-duty Truck and Medium-duty Vehicle Classes.

California 2015 and Subsequent Model Criteria Pollutant and 2017 and Subsequent Model Greenhouse Gas Exhaust Emission Standards and Test Procedures for Passenger Cars, Light-duty Trucks, and Medium-duty Vehicles.

California Exhaust Emission Standards and Test Procedures for 2018 and Subsequent Model Zero-emission Vehicles and Hybrid Electric Vehicles, in the Passenger Car, Light-duty Truck and Medium-duty Vehicle Classes.

California Assembly-line Test Procedures for 2001 and Subsequent Model-year Passenger Cars, Light-duty Trucks and Medium-duty Vehicles.

California Environmental Performance Label Specifications for 2009 and Subsequent Model Year Passenger Cars, Light-duty Trucks, and Medium-duty Passenger Vehicles.

California Evaporative Emission Standards and Test Procedures for 2001 Through 2025 Model Year Passenger Cars, Light-duty Trucks, Medium-duty Vehicles, and Heavy-duty Vehicles and 2001 and Subsequent Year Motorcycles.

California Evaporative Emission Standards and Test Procedures for 2026 and Subsequent Model Year Passenger Cars, Light-duty Trucks, Medium-duty Vehicles, and Heavy-duty Vehicles.

California Exhaust Emission Standards and Test Procedures for 1985 Through 2003 Model Heavy-duty Diesel Engines and Vehicles.

California Exhaust Emission Standards and Test Procedures for 1987 Through 2003 Model Heavy-duty Otto-cycle Engines and Vehicles.

Guidelines for Certification of 2003 and Subsequent Model-year Federally Certified Light-duty Motor Vehicles for Sale in California.

California New Vehicle Compliance Test Procedure.

California Refuelling Emission Standards and Test Procedures for 2001 and Subsequent Model Motor Vehicles.

California Test Procedures for 2026 and Subsequent Model Year Zero-emission Vehicles and Plug-In Hybrid Electric Vehicles, in the Passenger Car, Light-duty Truck and Medium-duty Vehicle Classes.

Motor Vehicle Emissions (Extracts).

Electric-powered Vehicles: Electric Powertrain Integrity Global Technical Regulation No. 20; Incorporation by Reference.

GHG Standards for Heavy-duty Vehicles - Phase 3.

Exemptions from Average Fuel Economy Standards; Passenger Automobile Average Fuel Economy Standards.

Fuel System Integrity of Hydrogen Vehicles; Compressed Hydrogen Storage System Integrity; Incorporation by Reference.

CAFE Standards for Model Years 2024-2026 Passenger Cars and Light Trucks.

Guidelines for Fuel Additive Waivers and Alcohol-gasoline Blend Waivers.

Tampering Enforcement Policy Memoranda - Reference Emission Control Equipment.

Public Hearing of Determination Mid-term Evaluation of GHG Years 2022-2025 LDV.

CAFE Environmental Impact Statement Model Year 2022-2025.

Release of MOVES4 Model for SIPS and Transportation Conformity.

Notice of Intent for Model Years 2027 and 2029 and Beyond.

CAFE Environmental Impact Statement Model Year 2022-2025.

Fuel System Integrity of Hydrogen Vehicles; Compressed Hydrogen Storage System Integrity; Incorporation by Reference.

Parts and Accessories Necessary for Safe Operation; Auxiliary Fuel Tanks.

California State Motor Vehicle Pollution Control Standards - Notices.

High Occupancy Vehicle (HOV) Exemption Rule Criteria for Low Emission/Energy Efficient Vehicles (Proposal).

Renewable Fuel Standard (RFS) Program: Standards for 2026 and 2027, Partial Waiver of 2025 Cellulosic Biofuel Volume Requirement, and Other Changes.

Regulatory Review - 2021.