CFR›Title 49›Subtitle B›Chapter V›Part 545›49 CFR 545.3 Citation49 CFR 545.3CorpusDaily eCFRDisplayed edition2026-09-17Last updated2026-09-17 § 545.3 Applicability.This subpart applies to manufacturers of motor vehicles. Previous 545.2 § 545.2 Purpose. Next 545.4 § 545.4 Response to inquiries.