21st Century Transportation Fuels Act

To amend title II of the Clean Air Act and title II of the Petroleum Marketing Practices Act with respect to high-octane fuels, and for other purposes. 1. Short title; table of contents (a) Short title This Act may be cited as the 21st Century Transportation Fuels Act (b) Table of contents The table of contents for this Act is as follows: Sec. 1. Short title; table of contents. Title I—High-Octane Fuel Sec. 101. High efficiency vehicles. Sec. 102. Octane disclosure. Sec. 103. 98 RON certification test fuel. Sec. 104. Octane sensitivity study. Sec. 105. Advertisement of price of 95 RON automotive fuel. Title II—Renewable fuels Subtitle A—Renewable fuel program Sec. 201. Updates and revisions to regulations. Sec. 202. Waivers. Sec. 203. Applicability. Sec. 204. State ethanol laws. Subtitle B—Ethanol waivers Sec. 211. Reid vapor pressure. Sec. 212. E20. Subtitle C—Fueling infrastructure Sec. 221. Performance standards for new E20 infrastructure. Title III—Vehicle Fuel Efficiency Sec. 301. Credits for exceeding average fuel economy standards. Sec. 302. Calculation of average fuel economy. Sec. 303. Rule of construction. I High-Octane Fuel 101. High efficiency vehicles (a) Requirements Part A of title II of the Clean Air Act ( 42 U.S.C. 7521 220. Octane specification (a) Applicability This section applies with respect to any motor vehicle (other than a motorcycle) that is introduced into commerce that— (1) is a light-duty vehicle or light-duty truck; (2) is a model year 2023 or later motor vehicle; and (3) uses gasoline for propulsion or any other operation of the motor vehicle, including the engine thereof. (b) Warranty requirements The manufacturer of a motor vehicle described in subsection (a) shall warrant to the ultimate purchaser and each subsequent purchaser that each such motor vehicle is designed— (1) to operate with gasoline containing up to and including 20 percent ethanol; and (2) to meet the design requirements under subsection (c). (c) Design requirements The manufacturer of a motor vehicle described in subsection (a) shall— (1) design each such motor vehicle— (A) to operate using gasoline that has a research octane number of 95 or higher; and (B) to improve fuel economy connected to the use of gasoline that has a research octane number of 95 or higher; and (2) incorporate into each such motor vehicle devices or elements of design (including physical or other barriers, devices, or technological systems) as are determined by the Administrator to be— (A) necessary to prevent the introduction of gasoline with a research octane number that is lower than 95 into such motor vehicle; and (B) technically and economically feasible. (d) Infrastructure requirements Any gasoline retailer selling gasoline for dispensing into motor vehicles described in subsection (a) shall incorporate into the retailer’s dispensing equipment such devices or elements of design as are determined by the Administrator to be— (1) necessary for compatibility with the motor vehicle design requirements under subsection (c)(2); and (2) technically and economically feasible. (e) Misfueling (1) Prohibitions against tampering and defeat devices for motor vehicles In lieu of applying section 203(a)(3) with respect to this section, the following shall apply: (A) No person shall— (i) remove or render inoperative any device or element of design installed on or in a motor vehicle pursuant to subsection (c)(2) prior to its sale and delivery to the ultimate purchaser; or (ii) knowingly remove or render inoperative any such device or element of design after such sale and delivery to the ultimate purchaser. (B) No person shall manufacture or sell, or offer to sell, or install, any part or component intended for use with, or as part of, any motor vehicle, where— (i) a principal effect of the part or component is to bypass, defeat, or render inoperative any device or element of design installed on or in a motor vehicle pursuant to subsection (c)(2); and (ii) the person knows or should know that such part or component is being offered for sale or installed for such use or put to such use. (2) Prohibitions against tampering and defeat devices for dispensing equipment (A) No person shall knowingly remove or render inoperative any device or element of design incorporated into dispensing equipment pursuant to subsection (d). (B) No person shall manufacture or sell, or offer to sell, or incorporate into, any part or component intended for use with, or as part of, any dispensing equipment, where— (i) a principal effect of the part or component is to bypass, defeat, or render inoperative any device or element of design incorporated into dispensing equipment pursuant to subsection (d); and (ii) the person knows or should know that such part or component is being offered for sale or incorporated for such use or put to such use. (3) Limitation on liability A manufacturer of a motor vehicle, or a gasoline retailer, that is in compliance with the requirements of this section and the requirements of the Petroleum Marketing Practices Act, shall not be liable under any provision of this Act or any other Federal, State, or local law, including common law, for damages— (A) to or caused by a motor vehicle described in subsection (a); and (B) that would not have occurred but for the introduction of gasoline with a research octane number that is lower than 95 into such motor vehicle. (f) Preemption (1) In general No State or any political subdivision thereof may adopt or continue in effect any provision of law or regulation with respect to the design of motor vehicles to operate using gasoline with a certain octane content, or the corresponding design of equipment for dispensing such gasoline into such motor vehicles, unless such provision of such law or regulation is the same as the corresponding provision in this section. (2) Investigative or enforcement actions A State or political subdivision thereof may provide for any investigative or enforcement action, remedy, or penalty (including procedural actions necessary to carry out such investigative or enforcement actions, remedies, or penalties) with respect to any provision of law or regulation permitted by paragraph (1). (g) Enforcement (1) Violations (A) Manufacturer Any manufacturer who violates subsection (b) or (c) shall be subject to a civil penalty of not more than $25,000. Any such violation shall constitute a separate offense with respect to each motor vehicle. (B) Gasoline retailer Any gasoline retailer who violates subsection (d) shall be subject to a civil penalty of not more than $2,500. Any such violation shall constitute a separate offense with respect to each dispensing equipment. (C) Misfueling (i) In general Any person who violates subsection (e) shall be subject to a civil penalty of not more than $2,500. (ii) Separate offenses Any such violation shall constitute a separate offense with respect to— (I) each motor vehicle, for purposes of paragraph (1)(A) of such subsection; (II) each dispensing equipment, for purposes of paragraph (2)(A) of such subsection; and (III) each part or component, for purposes of paragraph (1)(B) or (2)(B) of such subsection. (2) Civil actions; administrative assessment of certain penalties The provisions of subsections (b) and (c) of section 205 shall apply with respect to a violation of subsection (b), (c), (d), or (e) of this section to the same extent and in the same manner as such provisions apply with respect to a violation of section 203(a)(3). (h) Consultation (1) In general In promulgating regulations to carry out this section, the Administrator shall consult with persons to be regulated under this section. (2) Certain design requirements In promulgating regulations to carry out subsection (c)(2), the Administrator shall consult with the Secretary of Transportation in addition to the persons described in paragraph (1). (i) Rule of construction Nothing in this section shall be construed to relieve a person regulated under this section of any obligation to comply with requirements imposed by provisions of Federal law other than this section, except to the extent that such requirements are in conflict with this section. . (b) Definitions Section 216 of the Clean Air Act ( 42 U.S.C. 7550 (1) in paragraph (1), by striking and 208 208, and 220 (2) by adding at the end the following: (12) Research octane number The term research octane number . (c) Regulations (1) Promulgation The Administrator of the Environmental Protection Agency shall— (A) not later than 18 months after the date of enactment of this Act, propose regulations to carry out the amendments made by this section; and (B) not later than 36 months after such date of enactment, finalize regulations to carry out the amendments made by this section. (2) Failure to promulgate Beginning on the deadline in paragraph (1)(B) for finalizing regulations pursuant to such paragraph, until the Administrator finalizes such regulations, the Administrator is deemed— (A) to have determined under section 220(c)(2) of the Clean Air Act, as added by subsection (a) of this section, that each manufacturer of a motor vehicle subject to such section 220(c)(2) shall incorporate a restrictor assembly into the vehicle’s fuel filler tube so as to accept only a filling nozzle described in subparagraph (B); and (B) to have determined under section 220(d) of such Act that the diameter of each filling nozzle used by a gasoline retailer for dispensing gasoline with a research octane number of 95 or higher into a motor vehicle subject to such section 220(c) shall not exceed 0.77 inches. 102. Octane disclosure (a) High efficiency fuels Title II of the Petroleum Marketing Practices Act ( 15 U.S.C. 2821 206. High efficiency fuel and vehicle marketing requirements (a) Rule The Federal Trade Commission shall, by rule, and in consultation with persons to be regulated under this section, consumer advocates, and other stakeholders, as appropriate— (1) prescribe or revise requirements under this title relating to the certification, display, and representation of the automotive fuel rating of an automotive fuel as necessary to carry out— (A) the requirement under subsection (b); and (B) any determination made under subsection (c); (2) make the determination required under subsection (c); and (3) prescribe requirements under subsection (d). (b) Requirement The Federal Trade Commission shall require that, for purposes of this title, effective January 1, 2023, the automotive fuel rating of an automotive fuel with a research octane number of 95 or higher be determined only by the research octane number of such automotive fuel. (c) Determination The Federal Trade Commission shall determine whether, for purposes of this title, effective January 1, 2023, the automotive fuel rating of an automotive fuel with a research octane number that is lower than 95 should be determined only by the research octane number of such automotive fuel. (d) Labeling (1) In general The Federal Trade Commission shall prescribe requirements— (A) as the Federal Trade Commission determines necessary with respect to a display at the point of sale to ultimate purchasers of automotive fuel and a display on a motor vehicle to— (i) inform such ultimate purchaser of such automotive fuel and any purchaser or user of such motor vehicle, that a model year 2023 or later motor vehicle is only warrantied to use automotive fuel with a research octane number of 95 or higher; and (ii) provide a warning to such ultimate purchaser of such automotive fuel and any such purchaser or user of such motor vehicle, that the use of automotive fuel with a research octane number that is lower than 95 in a model year 2023 or later motor vehicle will result in reduced fuel economy, increased exhaust emissions, and possible engine damage; and (B) that are applicable to— (i) a manufacturer of a new motor vehicle (or an entity making a representation in connection with the sale of such motor vehicle) with respect to a display on such motor vehicle; and (ii) an automotive fuel retailer, with respect to a display at the point of sale to an ultimate purchaser of automotive fuel. (2) Considerations In prescribing requirements under paragraph (1), the Federal Trade Commission shall ensure that such requirements are designed to be— (A) understandable to— (i) the ultimate purchaser of automotive fuel; and (ii) any purchaser or user of a model year 2023 or later motor vehicle; and (B) cost-effective for automotive fuel retailers. (e) Deadlines The Federal Trade Commission shall— (1) not later than June 1, 2020, issue a proposed rule under subsection (a); and (2) not later than January 1, 2022, issue a final rule under subsection (a). . (b) Enforcement Section 203(e) of the Petroleum Marketing Practices Act ( 15 U.S.C. 2823(e) (1) by striking or a rule prescribed a rule prescribed (2) by striking of such section. of section 202, or a rule prescribed under section 206. (c) Table of contents amendment The table of contents for the Petroleum Marketing Practices Act ( 15 U.S.C. 2801 Sec. 206. High efficiency fuel and vehicle marketing requirements. . 103. 98 RON certification test fuel Not later than January 1, 2025, the Administrator of the Environmental Protection Agency shall take such actions as are necessary to allow the use of a certification test fuel with a research octane number of 98 for purposes of— (1) testing and certification under section 206(a) of the Clean Air Act ( 42 U.S.C. 7525(a) (2) testing and calculation procedures under section 32904(c) of title 49, United States Code, with respect to such motor vehicles. 104. Octane sensitivity study (a) Study (1) In general The Administrator shall seek to enter into appropriate arrangements with the Academy to— (A) conduct a comprehensive study of the octane sensitivity of automotive fuel with a research octane number of 95 or higher; and (B) submit reports described in subsection (b). (2) Contents In conducting the study under paragraph (1), the Academy shall examine— (A) the octane sensitivity of automotive fuel introduced into commerce for use in light-duty motor vehicles as of the date of enactment of this section; (B) the economic and technological feasibility and impacts of adjusting the octane sensitivity of automotive fuel with a research octane number of 95 or higher to increase automobile and fuel efficiency performance; (C) environmental and public health outcomes from increasing the octane sensitivity of automotive fuel with a research octane number of 95 or higher; and (D) the acceptability of the commercial marketplace, including refiners, automotive fuel retailers, manufacturers, and ultimate users, of increasing the octane sensitivity of automotive fuel with a research octane number of 95 or higher. (3) Information The Administrator shall provide the Academy, at its request, any information which the Academy determines necessary to conduct the study under paragraph (1). (b) Reports (1) Interim reports Not later than July 1, 2019, and every 6 months thereafter until a final report is submitted under paragraph (2), the Academy shall submit to Congress and the Administrator a report on the progress of the study conducted under subsection (a). (2) Final report Not later than December 31, 2021, the Academy shall submit to Congress and the Administrator a final report on the study conducted under subsection (a). (c) Definitions In this section: (1) Academy The term Academy (2) Administrator The term Administrator (3) Octane sensitivity The term octane sensitivity (4) Research octane number and motor octane number The terms research octane number motor octane number 15 U.S.C. 2821 105. Advertisement of price of 95 RON automotive fuel (a) In general It shall be unlawful for any person to sell or offer for sale, at retail, automotive fuel with a research octane number of 95 unless such person displays, in a manner specified in the rules promulgated under subsection (b), the total price per gallon of such fuel on any sign on which such person displays the price of the most-sold grade of automotive fuel of such person. (b) Rulemaking (1) In general Not later than 6 months after the date of the enactment of this Act, the Federal Trade Commission shall promulgate, in accordance with section 553 of title 5, United States Code, any rules necessary for the implementation and enforcement of this section. (2) Contents Such rules— (A) shall define retail most-sold (B) shall specify the manner in which the price of automotive fuel with a research octane number of 95 must be displayed in order to comply with subsection (a); and (C) shall be consistent with the requirements for declaring unfair acts or practices in section 5(n) of the Federal Trade Commission Act ( 15 U.S.C. 45(n) (c) Enforcement A violation of subsection (a) shall be treated as a violation of a rule defining an unfair or deceptive act or practice prescribed under section 18(a)(1)(B) of the Federal Trade Commission Act ( 15 U.S.C. 57a(a)(1)(B) 15 U.S.C. 41 (d) Sunset Effective January 1, 2029, this section is repealed. II Renewable fuels A Renewable fuel program 201. Updates and revisions to regulations (a) Regulations (1) Addition of conventional biofuel Clause (i) of section 211(o)(2)(A) of the Clean Air Act ( 42 U.S.C. 7545(o)(2)(A) (i) In general The Administrator shall by regulation require— (I) transportation fuel sold or introduced into commerce in the United States (except in noncontiguous States or territories), on an annual average basis, contains at least the applicable volume of renewable fuel, advanced biofuel, cellulosic biofuel, conventional biofuel, and biomass-based diesel, determined in accordance with subparagraph (B); and (II) renewable fuel produced from facilities that commenced construction after December 19, 2007 (the date of enactment of the Energy Independence and Security Act of 2007), achieves at least a 20-percent reduction in lifecycle greenhouse gas emissions compared to baseline lifecycle greenhouse gas emissions. . (2) Conforming amendments (A) Section 211(o)(2)(A) of the Clean Air Act ( 42 U.S.C. 7545(o)(2)(A) (B) Subparagraph (A) of section 211(o)(4) of the Clean Air Act ( 42 U.S.C. 7545(o)(4)(A) the last sentence of (C) Subparagraph (E) of section 211(o)(4) of the Clean Air Act ( 42 U.S.C. 7545(o)(4)(E) the last sentence of (b) Applicable volume of conventional biofuel Section 211(o)(2)(B)(i) of the Clean Air Act ( 42 U.S.C. 7545(o)(2)(B)(i) (V) Conventional biofuel (aa) In general For the purpose of subparagraph (A), of the volume of renewable fuel required under subclause (I), the applicable volume of conventional biofuel for the calendar years 2020 through 2022 shall be determined in accordance with the following table: Applicable volume of conventional biofuel Calendar year: (in billions of gallons) 2020 15 2021 15 2022 15. (bb) Applicability This subclause shall cease to apply on January 1, 2023. . (c) Other calendar years (1) In general Section 211(o)(2)(B) of the Clean Air Act ( 42 U.S.C. 7545(o)(2)(B) (ii) Subsequent calendar years For the purposes of subparagraph (A), the applicable volumes of advanced biofuel, cellulosic biofuel, and biomass-based diesel for each of calendar years 2023 through 2032 shall be— (I) determined by the Administrator not later than March 1 of such calendar year; and (II) subject to adjustment pursuant to the mid-year review under clause (iv)(II), equal to the actual volume of advanced biofuel, cellulosic biofuel, or biomass-based diesel, respectively, produced during the preceding calendar year, as determined under clause (iv)(I). (iii) Special rule for subsequent calendar years for biomass-based diesel The applicable volume of biomass-based diesel for each of calendar years 2020 through 2022 shall be determined in accordance with this subparagraph, as in effect on the day before the date of enactment of the 21st Century Transportation Fuels Act (iv) Determination of actual production (I) In general Not later than February 28 of a calendar year described in clause (ii), the Administrator shall, based on information from the Moderated Transaction System, determine— (aa) the actual volume produced during the preceding calendar year of advanced biofuel; and (bb) of such actual volume, the actual volume of each of cellulosic biofuel, biomass-based diesel, and other advanced biofuel. (II) Mid-year review Not later than September 1 of each calendar year described in clause (ii), the Administrator shall adjust the applicable volume requirement under clause (ii) for the calendar year for advanced biofuel, cellulosic biofuel, or biomass-based diesel to reflect any increase in production during that calendar year, based on information from the Moderated Transaction System. . (2) Conforming definition Section 211(o)(1) of the Clean Air Act ( 42 U.S.C. 7545(o)(1) (A) by redesignating subparagraphs (I) through (L) as subparagraphs (J) through (M), respectively; and (B) by inserting, after subparagraph (H), the following: (I) Moderated Transaction System The term Moderated Transaction System (i) the EPA Moderated Transaction System as defined in section 80.1401 of title 40, Code of Federal Regulations (or successor regulations); or (ii) any successor system. . (d) Definition of renewable biomass Subparagraph (J) of section 211(o)(1) of the Clean Air Act ( 42 U.S.C. 7545(o)(1) (1) in clause (i), by striking at any time prior to the enactment of this sentence (2) by amending clause (ii) to read as follows: (ii) Trees and tree residue from land, including land belonging to an Indian tribe or an Indian individual that is held in trust by the United States or subject to a restriction against alienation imposed by the United States. ; and (3) in clause (iv), by striking non-federal 202. Waivers Subject to section 203(c) of this Act, section 211(o)(7) of the Clean Air Act ( 42 U.S.C. 7545(o)(7) (1) in subparagraph (A), by striking the national quantity of renewable fuel the national quantity of advanced biofuel, cellulosic biofuel, or biomass-based diesel (2) by striking subparagraphs (D), (E), and (F). 203. Applicability (a) Applicable calendar years Except as provided in subsections (b) through (e), the amendments made by this subtitle apply with respect to calendar year 2020 and subsequent calendar years. Section 211(o) of the Clean Air Act ( 42 U.S.C. 7545(o) (b) Regulations The Administrator of the Environmental Protection Agency shall— (1) not later than 180 days after the date of enactment of this Act, shall promulgate the regulations required by paragraph (2)(A)(i) of section 211(o) of the Clean Air Act ( 42 U.S.C. 7545(o) (2) not later than January 1, 2021, shall promulgate the regulations required by such paragraph (2)(A)(i) respecting the requirements under such section 211(o) applicable for calendar year 2023 and subsequent calendar years. (c) Waiver authority The amendments made by section 202 of this Act to section 211(o)(7) of the Clean Air Act ( 42 U.S.C. 7545(o)(7) (d) Definition The amendment made by section 201(d) of this Act to subparagraph (J) of section 211(o)(1) of the Clean Air Act ( 42 U.S.C. 7545(o)(1) (e) Repeals Effective January 1, 2033, subsections (o), (q), and (v) of section 211 of the Clean Air Act ( 42 U.S.C. 7545 204. State ethanol laws (a) In general No State or political subdivision of a State may prohibit or require any particular blend, concentration, or percentage of ethanol in any automotive fuel. (b) Exception This section does not restrict the authority of a State or political subdivision of a State to continue to enforce any such prohibition or requirement in effect prior to the date of enactment of this Act. B Ethanol waivers 211. Reid vapor pressure (a) Reid vapor pressure limitation Section 211(h) of the Clean Air Act ( 42 U.S.C. 7545(h) (1) in paragraph (4)— (A) in the matter preceding subparagraph (A), by inserting or more 10 percent (B) in subparagraph (C), by striking additional alcohol or (2) in paragraph (5)(A), by inserting or more 10 percent (b) Existing waivers Section 211(f)(4) of the Clean Air Act ( 42 U.S.C. 7545(f)(4) (1) by striking The Administrator, upon (A) The Administrator, upon (2) by adding at the end the following: (B) A fuel or fuel additive with respect to which a waiver has been granted in accordance with subparagraph (A) prior to January 1, 2017, and that meets all of the conditions of that waiver, other than the waiver’s limits for Reid vapor pressure, may be introduced into commerce if the fuel or fuel additive meets all other applicable Reid vapor pressure requirements. . 212. E20 Section 211(f)(4) of the Clean Air Act ( 42 U.S.C. 7545(f)(4) (C) The Administrator shall grant a waiver in accordance with subparagraph (A) with respect to a fuel with a concentration of ethanol that is— (i) not more than 20 percent; and (ii) more than 15 percent. . C Fueling infrastructure 221. Performance standards for new E20 infrastructure Section 9003 of the Solid Waste Disposal Act ( 42 U.S.C. 6991b (k) E20 retail dispenser systems (1) In general The Administrator shall, not later than 1 year prior to the effective date specified in paragraph (3), issue or revise, as necessary, performance standards for dispenser systems described in paragraph (2) to require that such dispenser systems be compatible with automotive fuel with a concentration of up to and including 20 percent ethanol by volume. (2) Dispenser systems This subsection applies with respect to dispenser systems that are— (A) on or after the effective date specified in paragraph (3), brought into use to dispense at retail automotive fuel from an underground storage tank; and (B) subject to regulation under sections 1910.106 and 1926.152 of title 29, Code of Federal Regulations (as in effect on the date of enactment of this subsection). (3) Effective date Standards issued or revised pursuant to paragraph (1) shall take effect on the later of— (A) January 1, 2023; and (B) the date on which the Administrator first grants a waiver pursuant to section 211(f)(4)(C) of the Clean Air Act. (4) Definitions In this subsection: (A) Automotive fuel The term automotive fuel 15 U.S.C. 2821(6) (B) Compatible; dispenser system The terms compatible dispenser system this subsection . III Vehicle Fuel Efficiency 301. Credits for exceeding average fuel economy standards Section 32903 of title 49, United States Code, is amended— (1) in subsection (a)— (A) by redesignating paragraphs (1) and (2) as subparagraphs (A) and (B), respectively, and moving their margins 2 ems to the right; (B) in the matter preceding subparagraph (A), as redesignated, by striking When (1) In general When ; (C) in paragraph (1)(B), as redesignated, by striking paragraph (1) subparagraph (A), (D) by adding at the end the following: (2) Model years 2016 through 2021 Notwithstanding paragraph (1)(B), beginning with model year 2016 and ending with model year 2021, a manufacturer may apply any credits earned after model year 2009 pursuant to paragraph (1), which have not been applied pursuant to paragraph (1)(A), to any model year beginning after the model year for which the credits are earned. ; (2) in subsection (b)(2)(B), by striking subsection (a)(1) of this section subsection (a)(1)(A) (3) in subsection (g)— (A) in paragraph (3)— (i) in subparagraph (A), by striking 2011 2010 (ii) in subparagraph (B), by striking 2017, 1.5 miles per gallon; and 2016, 1.5 miles per gallon; (iii) by striking subparagraph (C) and inserting the following: (C) for model years 2017 and 2018, 2.0 miles per gallon; (D) for model years 2019 through 2021, 4.0 miles per gallon; and (E) for model year 2022 and subsequent model years, 6.0 miles per gallon. ; and (B) in paragraph (5), by striking 2010 2009 302. Calculation of average fuel economy Section 32904(a) of title 49, United States Code, is amended by adding at the end the following: (3) For model years 2012 through 2025, if requested by a manufacturer, the average fuel economy calculated by the Administrator for the manufacturer’s passenger and nonpassenger automobiles shall include off-cycle technology fuel economy credits equivalent to the credits calculated by the Administrator for the off-cycle technology under the Administrator’s vehicle emissions standards for the same or closest model year, provided that the technology has a direct impact upon improving fuel economy performance. . 303. Rule of construction Nothing in this title or the amendments made by this title may be construed to direct or grant new authority to the Secretary of Transportation to modify a maximum feasible average fuel economy standard established under section 32902 of title 49, United States Code. The Secretary’s authority to establish and amend a maximum feasible average fuel economy standard as provided in such section is unaffected by this title and the amendments made by this title.

Summary: 21st Century Transportation Fuels Act This bill addresses provisions related to high-octane fuel, renewable fuels, and vehicle fuel efficiency. Among other things, the bill establishes a national octane standard that requires automobile manufacturers to design motor vehicles to operate using gasoline that has a research octane number of 95 or higher, addresses the limitations on Reid vapor pressure (a measure of gasoline's volatility) that are placed on gasoline during the summer ozone season, and revises requirements for calculating Corporate Average Fuel Economy (CAFE) credits earned by a passenger automobile manufacturer for exceeding minimal required CAFE standards in a particular model year.