[Code of Federal Regulations] [Title 49, Volume 5] [Revised as of October 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR531.4] [Page 95] TITLE 49--TRANSPORTATION OF TRANSPORTATION PART 531--PASSENGER AUTOMOBILE AVERAGE FUEL ECONOMY STANDARDS--Table of Contents Sec. 531.4 Definitions. (a) Statutory terms. (1) The terms average fuel economy, manufacture, manufacturer, and model year are used as defined in section 501 of the Act. (2) The terms automobile and passenger automobile are used as defined in section 501 of the Act and in accordance with the determination in part 523 of this chapter. (b) Other terms. As used in this part, unless otherwise required by the context-- (1) Act means the Motor Vehicle Information and Cost Savings Act, as amended by Pub. L. 94-163.