republic-os/legal/us/code/title-49/chapter-329/section-32903.md

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LegalText	49 U.S.C. § 32903	Credits for exceeding average fuel economy standards	us	united_states_code	code_section	49	TRANSPORTATION	329	AUTOMOBILE FUEL ECONOMY	32903	49 U.S.C. § 32903	current	119-100	2026-06-26	official	https://uscode.house.gov/download/releasepoints/us/pl/119/100/xml_usc49@119-100.zip	/us/usc/t49/s32903	data/legal/raw/us/code/title-49/usc49.xml	b0ae98445a86d3f8ffe8681b8df1464442c69b13da16b3edebb39faca9b354f2	0786acdd244d8f42c5a8e8ed1ec2a8dcb47dd0e02a286752710a20745702a4fb	9f0567eb47b02e22bf8a2fb35a530d6cc8d442c07e69e2e330bc0b315f0d2d37	2026-07-04	official	legal us-code

49 U.S.C. § 32903 - Credits for exceeding average fuel economy standards

Text

(a) Earning and Period for Applying Credits.— When the average fuel economy of passenger automobiles manufactured by a manufacturer in a particular model year exceeds an applicable average fuel economy standard under subsections (a) through (d) of section 32902 (determined by the Secretary of Transportation without regard to credits under this section), the manufacturer earns credits. The credits may be applied to—

(1) any of the 3 consecutive model years immediately before the model year for which the credits are earned; and

(2) to the extent not used under paragraph (1) 11 So in original. Probably should be followed by a comma. any of the 5 consecutive model years immediately after the model year for which the credits are earned.

(b) Period of Availability and Plan for Future Credits.— (1) Except as provided in paragraph (2) of this subsection, credits under this section are available to a manufacturer at the end of the model year in which earned.

(2) (A) Before the end of a model year, if a manufacturer has reason to believe that its average fuel economy for passenger automobiles will be less than the applicable standard for that model year, the manufacturer may submit a plan to the Secretary of Transportation demonstrating that the manufacturer will earn sufficient credits under this section within the next 3 model years to allow the manufacturer to meet that standard for the model year involved. Unless the Secretary finds that the manufacturer is unlikely to earn sufficient credits under the plan, the Secretary shall approve the plan. Those credits are available for the model year involved if—

(i) the Secretary approves the plan; and

(ii) the manufacturer earns those credits as provided by the plan.

(B) If the average fuel economy of a manufacturer is less than the applicable standard under subsections (a) through (d) of section 32902 after applying credits under subsection (a)(1) of this section, the Secretary of Transportation shall notify the manufacturer and give the manufacturer a reasonable time (of at least 60 days) to submit a plan.

(c) Determining Number of Credits.— The number of credits a manufacturer earns under this section equals the product of—

(1) the number of tenths of a mile a gallon by which the average fuel economy of the passenger automobiles manufactured by the manufacturer in the model year in which the credits are earned exceeds the applicable average fuel economy standard under subsections (a) through (d) of section 32902; times

(2) the number of passenger automobiles manufactured by the manufacturer during that model year.

(d) Applying Credits for Passenger Automobiles.— The Secretary of Transportation shall apply credits to a model year on the basis of the number of tenths of a mile a gallon by which the manufacturer involved was below the applicable average fuel economy standard for that model year and the number of passenger automobiles manufactured that model year by the manufacturer. Credits applied to a model year are no longer available for another model year. Before applying credits, the Secretary shall give the manufacturer written notice and reasonable opportunity to comment.

(e) Applying Credits for Non-Passenger Automobiles.— Credits for a manufacturer of automobiles that are not passenger automobiles are earned and applied to a model year in which the average fuel economy of that class of automobiles is below the applicable average fuel economy standard under section 32902(a) of this title, to the same extent and in the same way as provided in this section for passenger automobiles.

(f) Credit Trading Among Manufacturers.— (1) In general.— The Secretary of Transportation may establish, by regulation, a fuel economy credit trading program to allow manufacturers whose automobiles exceed the average fuel economy standards prescribed under section 32902 to earn credits to be sold to manufacturers whose automobiles fail to achieve the prescribed standards such that the total oil savings associated with manufacturers that exceed the prescribed standards are preserved when trading credits to manufacturers that fail to achieve the prescribed standards.

(2) Limitation.— The trading of credits by a manufacturer to the category of passenger automobiles manufactured domestically is limited to the extent that the fuel economy level of such automobiles shall comply with the requirements of section 32902(b)(4), without regard to any trading of credits from other manufacturers.

(g) Credit Transferring Within a Manufacturer’s Fleet.— (1) In general.— The Secretary of Transportation shall establish by regulation a fuel economy credit transferring program to allow any manufacturer whose automobiles exceed any of the average fuel economy standards prescribed under section 32902 to transfer the credits earned under this section and to apply such credits within that manufacturer’s fleet to a compliance category of automobiles that fails to achieve the prescribed standards.

(2) Years for which used.— Credits transferred under this subsection are available to be used in the same model years that the manufacturer could have applied such credits under subsections (a), (b), (d), and (e), as well as for the model year in which the manufacturer earned such credits.

(3) Maximum increase.— The maximum increase in any compliance category attributable to transferred credits is—

(A) for model years 2011 through 2013, 1.0 mile per gallon;

(B) for model years 2014 through 2017, 1.5 miles per gallon; and

(C) for model year 2018 and subsequent model years, 2.0 miles per gallon.

(4) Limitation.— The transfer of credits by a manufacturer to the category of passenger automobiles manufactured domestically is limited to the extent that the fuel economy level of such automobiles shall comply with the requirements under section 32904(b)(4), without regard to any transfer of credits from other categories of automobiles described in paragraph (6)(B).

(5) Years available.— A credit may be transferred under this subsection only if it is earned after model year 2010.

(6) Definitions.— In this subsection:

(A) Fleet.— The term “fleet” means all automobiles manufactured by a manufacturer in a particular model year.

(B) Compliance category of automobiles.— The term “compliance category of automobiles” means any of the following 3 categories of automobiles for which compliance is separately calculated under this chapter:

(i) Passenger automobiles manufactured domestically.

(ii) Passenger automobiles not manufactured domestically.

(iii) Non-passenger automobiles.

(h) Refund of Collected Penalty.— When a civil penalty has been collected under this chapter from a manufacturer that has earned credits under this section, the Secretary of the Treasury shall refund to the manufacturer the amount of the penalty to the extent the penalty is attributable to credits available under this section.

(Pub. L. 103–272, § 1(e), July 5, 1994, 108 Stat. 1061; Pub. L. 110–140, title I, § 104(a), Dec. 19, 2007, 121 Stat. 1501.)

Notes

Historical and Revision Notes RevisedSectionSource (U.S. Code)Source (Statutes at Large) 32903(a)15:2002(l)(1)(B), (4).Oct. 20, 1972, Pub. L. 92–513, 86 Stat. 947, § 502(l); added Oct. 10, 1980, Pub. L. 96–425, § 6(b), 94 Stat. 1826. 32903(b)(1)15:2002(l)(1)(A). 32903(b)(2)15:2002(l)(1)(C). 32903(c)15:2002(l)(1)(D). 32903(d)15:2002(l)(1)(E). 32903(e)15:2002(l)(2). 32903(f)15:2002(l)(3). In this section, various forms of the words “apply credits” are substituted for various forms of “credits are available to be taken into account” to be more concise and to make more clear the distinction between when credits are available and to what years they may be applied. In subsection (a), before clause (1), the text of 15:2002(l)(4) is omitted as surplus because of 49:322(a). The words “any adjustment under subsection (d) of this section” are omitted because 15:2002(d) is omitted from the revised title as executed. The words “calculated under subparagraph (C)” (which apparently should be “calculated under subparagraph (D)”) are omitted as surplus. In clauses (1) and (2), the words “with respect to the average fuel economy of that manufacturer” are omitted as surplus. The words “year for which the credits are earned” are substituted for “year in which such manufacturer exceeds such applicable average fuel economy standard” to eliminate unnecessary words. Subsection (b)(1) is substituted for 15:2002(l)(1)(A) to eliminate unnecessary words. In subsection (b)(2)(A) is substituted for 15:2002(l)(1)(C)(i)–(iii) to eliminate unnecessary words. In subsection (e), the words “as provided in this section for passenger automobiles” are substituted for “as provided for under paragraph (1)” for clarity. The text of 15:2002(l)(2) (last sentence) is omitted as expired.

Editorial Notes

Amendments2007—Subsec. (a). Pub. L. 110–140, § 104(a)(1), substituted “subsections (a) through (d) of section 32902” for “section 32902(b)–(d) of this title” in introductory provisions. Subsec. (a)(2). Pub. L. 110–140, § 104(a)(2), substituted “paragraph (1)” for “clause (1) of this subsection,” and “5 consecutive” for “3 consecutive”. Subsecs. (b)(2)(B), (c)(1). Pub. L. 110–140, § 104(a)(1), substituted “subsections (a) through (d) of section 32902” for “section 32902(b)–(d) of this title”. Subsecs. (f) to (h). Pub. L. 110–140, § 104(a)(3), (4), added subsecs. (f) and (g) and redesignated former subsec. (f) as (h).

Statutory Notes and Related Subsidiaries

Effective Date of 2007 AmendmentAmendment by Pub. L. 110–140 effective on the date that is 1 day after Dec. 19, 2007, see section 1601 of Pub. L. 110–140, set out as an Effective Date note under section 1824 of Title 2, The Congress.