---
kind: "unit"
title: "40"
title_heading: "Protection of Environment"
key: "chI/subchC/part86"
level: "part"
label: "Part 86"
heading: "Control of Emissions from New and In-Use Highway Vehicles and Engines"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/40/chI-subchC-part86"
sections_count: 351
---

# Part 86 — Control of Emissions from New and In-Use Highway Vehicles and Engines

Title 40 C.F.R. — Protection of Environment › Chapter I — Environmental Protection Agency › Subchapter C — Air Programs

## Sections

- [§86.1. Incorporation by reference.](/cfr/40/86.1.md)
- [§86.1931-86.1999. Reserved](/cfr/40/86.1931-86.1999.md)

## Contents

- [Subpart A — General Provisions for Heavy-Duty Engines and Heavy-Duty Vehicles](/cfr/40/chI-subchC-part86-subpartA.md)
- [Subpart B — Emission Regulations for 1977 and Later Model Year New Light-Duty Vehicles and New Light-Duty Trucks and New Otto-Cycle Complete Heavy-Duty Vehicles; Test Procedures](/cfr/40/chI-subchC-part86-subpartB.md)
- [Subpart C — Emission Regulations for 1994 and Later Model Year Gasoline-Fueled New Light-Duty Vehicles, New Light-Duty Trucks and New Medium-Duty Passenger Vehicles; Cold Temperature Test Procedures](/cfr/40/chI-subchC-part86-subpartC.md)
- [Subpart D — Subpart D [Reserved]](/cfr/40/chI-subchC-part86-subpartD.md)
- [Subpart E — Emission Regulations for 1978 and Later New Motorcycles, General Provisions](/cfr/40/chI-subchC-part86-subpartE.md)
- [Subpart F — Emission Regulations for 1978 and Later New Motorcycles; Test Procedures](/cfr/40/chI-subchC-part86-subpartF.md)
- [Subpart G — Selective Enforcement Auditing of New Light-Duty Vehicles, Light-Duty Trucks, and Heavy-Duty Vehicles](/cfr/40/chI-subchC-part86-subpartG.md)
- [Subpart H-I — I [Reserved]](/cfr/40/chI-subchC-part86-subpartH-I.md)
- [Subpart J — Fees for the Motor Vehicle and Engine Compliance Program](/cfr/40/chI-subchC-part86-subpartJ.md)
- [Subpart K — Selective Enforcement Auditing of New Heavy-Duty Engines](/cfr/40/chI-subchC-part86-subpartK.md)
- [Subpart L — Nonconformance Penalties for Gasoline-Fueled and Diesel Heavy-Duty Engines and Heavy-Duty Vehicles, Including Light-Duty Trucks](/cfr/40/chI-subchC-part86-subpartL.md)
- [Subpart M — Subpart M [Reserved]](/cfr/40/chI-subchC-part86-subpartM.md)
- [Subpart N — Exhaust Test Procedures for Heavy-duty Engines](/cfr/40/chI-subchC-part86-subpartN.md)
- [Subpart O-R — Subparts O-R [Reserved]](/cfr/40/chI-subchC-part86-subpartO-R.md)
- [Subpart S — General Compliance Provisions for Control of Air Pollution From New and In-Use Light-Duty Vehicles, Light-Duty Trucks, and Heavy-Duty Vehicles](/cfr/40/chI-subchC-part86-subpartS.md)
- [Subpart T — Manufacturer-Run In-Use Testing Program for Heavy-Duty Diesel Engines](/cfr/40/chI-subchC-part86-subpartT.md)