49 CFR § 531.2 - Purpose.

---
identifier: "/us/cfr/t49/s531.2"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 531.2 - Purpose."
title_number: 49
title_name: "Transportation"
section_number: "531.2"
section_name: "Purpose."
chapter_name: "NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
part_number: "531"
part_name: "PASSENGER AUTOMOBILE AVERAGE FUEL ECONOMY STANDARDS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 32902, delegation of authority at 49 CFR 1.95."
regulatory_source: "87 FR 26070, May 2, 2022, unless otherwise noted."
cfr_part: "531"
---


# 531.2 Purpose.

The purpose of this part is to increase the fuel economy of passenger automobiles by establishing minimum levels of average fuel economy for those vehicles.