2014—Subsec. (a). Pub. L. 113–291, § 318(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.

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

2007—Pub. L. 110–140 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.

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

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

Amendment 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.