Sec. 216. As used in this part- 
       (1) The term "manufacturer" as used in sections  202, 203,
     206,  207,  and   208  means  any  person  engaged   in  the
     manufacturing or assembling of new motor vehicles, new motor
     vehicle   engines,  new  nonroad  vehicles  or  new  nonroad
     engines, or  importing such vehicles or  engines for resale,
     or who acts for and is under the control of  any such person
     in connection  with the distribution of  new motor vehicles,
     new  motor  vehicle engines,  new  nonroad  vehicles or  new
     nonroad  engines,  but shall  not  include  any dealer  with
     respect to  new motor  vehicles, new motor  vehicle engines,
     new nonroad vehicles or new nonroad engines received  by him
     in commerce.
       (2) The  term  "motor vehicle"  means  any  self-propelled
     vehicle designed  for transporting persons or  property on a
     street or highway.
       (3) Except with respect to vehicles or engines imported or
     offered for importation, the  term "new motor vehicle" means
     a  motor vehicle the equitable  or legal title  to which has
     never  been transferred  to an  ultimate purchaser;  and the
     term "new motor  vehicle engine"  means an engine  in a  new
     motor vehicle  or a  motor vehicle engine  the equitable  or
     legal  title  to which  has  never been  transferred  to the
     ultimate purchaser; and with respect to imported vehicles or
     engines,  such  terms  mean  a  motor  vehicle  and  engine,
     respectively,  manufactured  after the  effective date  of a
     regulation issued  under section 202 which  is applicable to
     such vehicle or engine (or which would be applicable to such
     vehicle or  engine had it been  manufactured for importation
     into the United States).
       (4) The term "dealer"  means any person who is  engaged in
     the  sale or the distribution  of new motor  vehicles or new
     motor vehicle engines to the ultimate purchaser.
       (5) The  term "ultimate purchaser" means,  with respect to
     any new motor vehicle or new motor vehicle engine, the first
     person who in good faith purchases such new motor vehicle or
     new engine for purposes other than resale.
       (6)  The term  "commerce" means  (A) commerce  between any
     place  in any State and  any place outside  thereof; and (B)
     commerce wholly within the District of Columbia.
       (7)  Vehicle  curb  weight, gross  vehicle  weight rating,
     light-duty  truck, light-duty  vehicle,  and loaded  vehicle
     weight.-  The terms  "vehicle curb  weight", "gross  vehicle
     weight  rating" (GVWR), "light-duty truck" (LDT), light-duty
     vehicle, and "loaded vehicle  weight" (LVW) have the meaning
     provided in regulations promulgated by the Administrator and
     in  effect  as  of  the  enactment  of  the  Clean  Air  Act
     Amendments  of   1990.  The  abbreviations   in  parentheses
     corresponding  to any  term  referred to  in this  paragraph
     shall have the same meaning as the corresponding term.
       (8) Test weight.- The term "test weight" and the abbrevia-
     tion  "tw" mean the vehicle  curb weight added  to the gross
     vehicle weight rating (gvwr) and divided by 2.
       (9) Motor  vehicle or engine part  manufacturer.- The term
     "motor  vehicle  or engine  part  manufacturer"  as used  in
     sections  207  and  208  means  any person  engaged  in  the
     manufacturing,  assembling  or  rebuilding  of  any  device,
     system,  part,  component  or  element of  design  which  is
     installed in or on motor vehicles or motor vehicle engines.
       (10) Nonroad engine.-  The  term "nonroad engine" means an
     internal combustion engine (including the  fuel system) that
     is not used in a motor vehicle or a vehicle  used solely for
     competition, or that is not subject to standards promulgated
     under section 111 or section 202.
       (11) Nonroad vehicle.-  The term "nonroad vehicle" means a
     vehicle that is powered by a  nonroad engine and that is not
     a motor vehicle or a vehicle used solely for competition.
[42 U.S.C. 7550]