40 CFR § 600.509-12 - Voluntary submission of additional data.

---
identifier: "/us/cfr/t40/s600.509-12"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 600.509-12 - Voluntary submission of additional data."
title_number: 40
title_name: "Protection of Environment"
section_number: "600.509-12"
section_name: "Voluntary submission of additional data."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "Q"
subchapter_name: "ENERGY POLICY"
part_number: "600"
part_name: "FUEL ECONOMY AND GREENHOUSE GAS EXHAUST EMISSIONS OF MOTOR VEHICLES"
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. 32901—23919q, Pub. L. 109-58."
regulatory_source: "41 FR 38685, Sept. 10, 1976, unless otherwise noted."
cfr_part: "600"
---


# 600.509-12 Voluntary submission of additional data.

(a) The manufacturer may optionally submit data in addition to the data required by the Administrator.

(b) Additional fuel economy and carbon-related exhaust emissions data may be submitted by the manufacturer for any vehicle configuration which is to be tested as required in § 600.507 or for which fuel economy and carbon-related exhaust emissions data were previously submitted under paragraph (c) of this section.

(c) Within a base level, additional fuel economy and carbon-related exhaust emissions data may be submitted by the manufacturer for any vehicle configuration which is not required to be tested by § 600.507.

[75 FR 25713, May 7, 2010]