49 CFR § 537.3 - Applicability.

---
identifier: "/us/cfr/t49/s537.3"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 537.3 - Applicability."
title_number: 49
title_name: "Transportation"
section_number: "537.3"
section_name: "Applicability."
chapter_name: "NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
part_number: "537"
part_name: "AUTOMOTIVE FUEL ECONOMY REPORTS"
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. 32907; delegation of authority at 49 CFR 1.95."
regulatory_source: "87 FR 26087, May 2, 2022, unless otherwise noted."
cfr_part: "537"
---


# 537.3 Applicability.

This part applies to automobile manufacturers, except for manufacturers subject to an alternate fuel economy standard under 49 U.S.C. 32902(d).

[89 FR 52953, June 24, 2024]