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40 CFR § 86.001-23 - Required data.

---
identifier: "/us/cfr/t40/s86.001-23"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 86.001-23 - Required data."
title_number: 40
title_name: "Protection of Environment"
section_number: "86.001-23"
section_name: "Required data."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "C"
subchapter_name: "AIR PROGRAMS"
part_number: "86"
part_name: "CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND ENGINES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 7401-7671q."
cfr_part: "86"
---

# 86.001-23 Required data.

Section 86.001-23 includes text that specifies requirements that differ from § 86.098-23. Where a paragraph in § 86.098-23 is identical and applicable to § 86.001-23, this may be indicated by specifying the corresponding paragraph and the statement “[Reserved]. For guidance see § 86.098-23.”

(a)-(b)(1) [Reserved]. For guidance see § 86.098-23.

(b)(2) For light-duty vehicles and light-duty trucks, the manufacturer shall submit evaporative emission and/or refueling emission deterioration factors for each evaporative/refueling emission family-emission control system combination and all test data that are derived from testing described under § 86.001-21(b)(4)(i) designed and conducted in accordance with good engineering practice to assure that the vehicles covered by a certificate issued under § 86.001-30 will meet the evaporative and/or refueling emission standards in § 86.099-8 or § 86.001-9, as appropriate, for the useful life of the vehicle.

(b)(3) and (b)(4) [Reserved]. For guidance see § 86.098-23.

(c) *Emission data* (1) [Reserved]

(c)(2)-(e)(1) [Reserved]. For guidance see § 86.098-23.

(e)(2) For evaporative and refueling emissions durability, or light-duty truck or HDE exhaust emissions durability, a statement of compliance with paragraph (b)(2) of this section or § 86.098-23 (b)(1)(ii), (b)(3), or (b)(4) as applicable.

(3) For certification of vehicles with non-integrated refueling systems, a statement that the drivedown used to purge the refueling canister was the same as described in the manufacturer's application for certification. Furthermore, a description of the procedures used to determine the number of equivalent UDDS miles required to purge the refueling canisters, as determined by the provisions of § 86.001-21(b)(5)(v) and subpart B of this part. Furthermore, a written statement to the Administrator that all data, analyses, test procedures, evaluations and other documents, on which the above statement is based, are available to the Administrator upon request.

(f)-(g) [Reserved]

(h)-(m) [Reserved]. For guidance see § 86.098-23.

[61 FR 54887, Oct. 22, 1996, as amended at 62 FR 54720, Oct. 21, 1997; 79 FR 23687, Apr. 28, 2014]