---
kind: "section"
citation: "40 C.F.R. § 1036.503"
title: "40"
number: "1036.503"
heading: "Engine data and information to support vehicle certification for NHTSA."
url: "https://uscodex.org/cfr/40/1036.503"
---

# §1036.503. Engine data and information to support vehicle certification for NHTSA.


See [§ 1036.505](/cfr/40/1036.505.md) for engine data and information required to support vehicle certification.


## Notes

### Amendments

[91 FR 7779, Feb. 18, 2026]

### Authority

Authority: 42 U.S.C. 7401—7671q.

### Source

Source: 88 FR 4487, Jan. 24, 2023, unless otherwise noted.

### Amendments

[91 FR 7779, Feb. 18, 2026]