eCFR.io
Daily eCFR

Subpart I—Exhaust Emission Test Procedures for Motor Vehicles

40 CFR Part 1066 Subpart I

Citation40 CFR Part 1066 Subpart I
ContainsSections 1066.801–1066.845
CorpusDaily eCFR
Displayed edition2026-06-29
Last updated2026-06-29

Subpart I—Exhaust Emission Test Procedures for Motor Vehicles

Sections

Section numbering in the official eCFR can be non-consecutive. Omitted section numbers are not treated here as reserved unless the source explicitly labels them that way.

Source79 FR 23823, Apr. 28, 2014, unless otherwise noted.