US Code

Public Law 119-73 (01/23/2026)

49 U.S.C. § 32906

Maximum fuel economy increase for alternative fuel automobiles

(a)

In General .—

For each of model years 1993 through 2019 for each category of automobile (except an electric automobile or, beginning with model year 2016, an alternative fueled automobile that uses a fuel described in subparagraph (E) of section 32901(a)(1)), the maximum increase in average fuel economy for a manufacturer attributable to dual fueled automobiles is—
(1)
1.2 miles a gallon for each of model years 1993 through 2014;
(2)
1.0 miles per gallon for model year 2015;
(3)
0.8 miles per gallon for model year 2016;
(4)
0.6 miles per gallon for model year 2017;
(5)
0.4 miles per gallon for model year 2018;
(6)
0.2 miles per gallon for model year 2019; and
(7)
0 miles per gallon for model years after 2019.
(b)

Calculation .—

In applying subsection (a), the Administrator of the Environmental Protection Agency shall determine the increase in a manufacturer’s average fuel economy attributable to dual fueled automobiles by subtracting from the manufacturer’s average fuel economy calculated under section 32905(f) the number equal to what the manufacturer’s average fuel economy would be if it were calculated by the formula under section 32904(a)(1) by including as the denominator for each model of dual fueled automobiles the fuel economy when the automobiles are operated on gasoline or diesel fuel.

Pub. L. 103–272, § 1(e)108 Stat. 1067Pub. L. 109–58, title VII, § 772(b)119 Stat. 834Pub. L. 110–140, title I, § 109(a)121 Stat. 1505Pub. L. 113–291, div. A, title III, § 318(a)128 Stat. 3341(, , ; , , ; , , ; , (d), , , 3342.)

Historical and Revision Notes

Revised

Section

Source (U.S. Code)

Source (Statutes at Large)

32906(a)

15:2013(g)(1).

Oct. 20, 1972, Pub. L. 92–513, 86 Stat. 947, § 513(g)(1), (2)(A); added Oct. 14, 1988, Pub. L. 100–494, § 6(a), 102 Stat. 2449; Oct. 24, 1992, Pub. L. 102–486, § 403(5) (G)(i), (ii)(I), 106 Stat. 2877.

32906(b)

15:2013(g)(2)(A).

Editorial Notes

Amendments

Pub. L. 113–291, § 318(a)2014—Subsec. (a). , substituted “(except an electric automobile or, beginning with model year 2016, an alternative fueled automobile that uses a fuel described in subparagraph (E) of section 32901(a)(1))” for “(except an electric automobile)” in introductory provisions.

Pub. L. 113–291, § 318(d)Subsec. (b). , substituted “section 32905(f)” for “section 32905(e)”.

Pub. L. 110–1402007— amended section generally, substituting provisions relating to maximum increase in average fuel economy for each of model years 1993 through 2019 and calculation of each such increase for provisions relating to maximum increase for each of model years 1993 through 2010 and authorizing offsets if the Secretary of Transportation reduced the average fuel economy standard for passenger automobiles for any model year below 27.5 miles per gallon.

Pub. L. 109–58, § 772(b)(1)2005—Subsec. (a)(1)(A). , substituted “model years 1993–2010” for “the model years 1993–2004”.

Pub. L. 109–58, § 772(b)(2)Subsec. (a)(1)(B). , substituted “model years 2011–2014” for “the model years 2005–2008”.

Statutory Notes and Related Subsidiaries

Effective Date of 2007 Amendment

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