### Question
How is the "clean-fuel vehicle" defined?


### Answer
The term **clean-fuel vehicle** is defined in *42 U.S.C. § 7581* as follows -

> a vehicle in a class or category of vehicles which has been certified to meet for any model year the clean-fuel vehicle standards applicable under this part for that model year to clean-fuel vehicles in that class or category

#### Citation:
  - *42 U.S.C. § 7581*
  - Heading: **SUBCHAPTER I-PROGRAMS AND ACTIVITIES > Subchapter Referred to in Other Sections > Part Referred to in Other Sections**

