United States v. Hino Motors — criminal plea and civil resolution

Alleged conduct

Multi-year scheme to submit false emission-test data to EPA and CARB, obtaining engine certifications for engines that did not meet applicable standards.

Engines or vehicles affected

Approximately 105,000 U.S.-market heavy-duty diesel engines model years 2010–2019.

Manufacturer(s)

Hino Motors Ltd.

Year

2025

Agency / court

U.S. Department of Justice / U.S. EPA / California Air Resources Board

Vehicle class

heavy-duty diesel

Historical relevance

Manufacturer enforcement matter from 2025. Kept separate from independent-tuner criminal defendants; the two enforcement tracks arise under the same Clean Air Act provisions but do not share defendants, penalties, or clemency records.

Relationship to independent tuner enforcement

This is a manufacturer / OEM matter. It is not part of the individual-tuner criminal docket set and no pardon of an individual tuner defendant affects it. Cross-linkage exists only through shared statutory authority (Clean Air Act §§ 203, 205, 213) and the underlying defeat-device theory.