{"data":{"id":"us/16-cfr-309.12","jurisdiction":"us","citation":"16 CFR 309.12","heading":"Recordkeeping.","body":"You must keep for one year records of how you determined fuel ratings. The records must be available for inspection by Federal Trade Commission staff members, or by people authorized by FTC.","path":["Title 16—Commercial Practices","CHAPTER I—FEDERAL TRADE COMMISSION","SUBCHAPTER C—REGULATIONS UNDER SPECIFIC ACTS OF CONGRESS","PART 309—LABELING REQUIREMENTS FOR ALTERNATIVE FUELS AND ALTERNATIVE FUELED VEHICLES","Subpart B—Requirements for Alternative Fuels"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-16.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:29Z","sha256":"351c140ec238876a9d092fea994ec947ad77bc87f82158344b671f7c70a35fd5","source_id":"us-cfr","stale":true,"prev":"us/16-cfr-309.11","next":"us/16-cfr-309.13"},"notice":"GroundRules: Original legal text. Not legal advice."}