---
kind: "unit"
title: "49"
title_heading: "Transportation"
key: "subtB/chV/part525"
level: "part"
label: "Part 525"
heading: "Exemptions from Average Fuel Economy Standards"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/49/subtB-chV-part525"
sections_count: 12
---

# Part 525 — Exemptions from Average Fuel Economy Standards

Title 49 C.F.R. — Transportation › Subtitle B — Other Regulations Relating to Transportation › Chapter V — National Highway Traffic Safety Administration, Department of Transportation

## Sections

- [§525.1. Scope.](/cfr/49/525.1.md)
- [§525.2. Purpose.](/cfr/49/525.2.md)
- [§525.3. Applicability.](/cfr/49/525.3.md)
- [§525.4. Definitions.](/cfr/49/525.4.md)
- [§525.5. Limitation on eligibility.](/cfr/49/525.5.md)
- [§525.6. Requirements for petition.](/cfr/49/525.6.md)
- [§525.7. Basis for petition.](/cfr/49/525.7.md)
- [§525.8. Processing of petitions.](/cfr/49/525.8.md)
- [§525.9. Duration of exemption.](/cfr/49/525.9.md)
- [§525.10. Renewal of exemption.](/cfr/49/525.10.md)
- [§525.11. Termination of exemption; amendment of alternative average fuel economy standard.](/cfr/49/525.11.md)
- [§525.12. Public inspection of information.](/cfr/49/525.12.md)