CFR›Title 40›Chapter I›Part 1066›Subpart F ContainsSection 1066.501CorpusDaily eCFRDisplayed edition2026-04-27Last updated2026-04-27 Subpart F—Electric Vehicles and Hybrid Electric Vehicles Sections 1066.501 § 1066.501 Overview. Previous E Subpart E—Preparing Vehicles and Running an Exhaust Emission Test Next G Subpart G—Calculations