CFR›Title 49›Subtitle B›Chapter V›Part 529 ContainsSections 529.1–529.6CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 529—MANUFACTURERS OF MULTISTAGE AUTOMOBILES Sections 529.1 § 529.1 Scope and purpose. 529.2 § 529.2 Applicability. 529.3 § 529.3 Definitions. 529.4 § 529.4 Requirements for incomplete automobile manufacturers. 529.5 § 529.5 Requirements for intermediate manufacturers. 529.6 § 529.6 Requirements for final-stage manufacturers. AuthoritySec. 301, Pub. L. 94-163, 80 Stat. 901 (15 U.S.C. 2001); delegation of authority at 41 FR 25015, June 22, 1976.Source42 FR 38372, July 28, 1977, unless otherwise noted. Previous 526 Part 526—Petitions and Plans for Relief Under the Automobile Fuel Efficiency Act of 1980 Next 531 Part 531—Passenger Automobile Average Fuel Economy Standards