{"data":{"id":"us/49-cfr-531.2","jurisdiction":"us","citation":"49 CFR 531.2","heading":"Purpose.","body":"The purpose of this part is to increase the fuel economy of passenger automobiles by establishing minimum levels of average fuel economy for those vehicles.","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER V—NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","PART 531—PASSENGER AUTOMOBILE AVERAGE FUEL ECONOMY STANDARDS"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-49.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:34Z","sha256":"2f1898886c11b62e466a9498d8643e88ea286cb05ddff7d7c282952266a09863","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-531.1","next":"us/49-cfr-531.3"},"notice":"GroundRules: Original legal text. Not legal advice."}