40 C.F.R. § 85.2303

Duration of model year.

Last amended: 2017Year: 2026Length: 45 wordsOfficial source

Cite as 40 C.F.R. § 85.2303 (2026)

A specific model year must always include January 1 of the calendar year for which it is designated and may not include a January 1 of any other calendar year. Thus, the maximum duration of a model year is one calendar year plus 364 days.
40 C.F.R. § 85.2303: Duration of model year. | Justis AI