49 CFR § 537.6 - General content of reports.

---
identifier: "/us/cfr/t49/s537.6"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 537.6 - General content of reports."
title_number: 49
title_name: "Transportation"
section_number: "537.6"
section_name: "General content of reports."
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"
---


# 537.6 General content of reports.

(a) Pre-model year and mid-model year reports. Except as provided in paragraph (c) of this section, each pre-model year report and the mid-model year report for each model year must contain the information required by § 537.7(a).

(b) Supplementary report. Except as provided in paragraph (c) of this section, each supplementary report for each model year must contain the information required by § 537.7(a)(1) and (2), as appropriate for the vehicle fleets produced by the manufacturer, in accordance with § 537.8(b)(1) through (4) as appropriate.

(c) Exceptions. The pre-model year report, mid-model year report, and supplementary report(s) submitted by an incomplete automobile manufacturer for any model year are not required to contain the information specified in § 537.7(c)(4)(xv) through (xviii) and (c)(5). The information provided by the incomplete automobile manufacturer under § 537.7(c) shall be according to base level instead of model type or carline.