California Code, Health and Safety Code - HSC § 43706

(a) The state board shall petition the Federal Trade Commission, pursuant to Part 455 of Title 16 of the Code of Federal Regulations, for a limited exemption from the Federal Trade Commission's Buyer's Guide, to allow this state to incorporate into the Buyer's Guide utilized by motor vehicle dealers in this state, a smog index chart pursuant to subdivision (b) of Section 44254.

(b) Ninety days following approval by the Federal Trade Commission of a petition pursuant to subdivision (a), it shall be unlawful for any motor vehicle dealer licensed by the Department of Motor Vehicles to display or offer for sale any used vehicle unless there is affixed to the vehicle the Federal Trade Commission's Buyer's Guide as required by Part 455 of Title 16 of the Code of Federal Regulations which includes a smog index chart pursuant to subdivision (b) of Section 44254. Ninety days following the final disapproval by the Federal Trade Commission of a petition pursuant to subdivision (a), it shall be unlawful for any motor vehicle dealer licensed by the Department of Motor Vehicles to display or offer for sale any used vehicle unless there is attached, by a perforated attachment, to the Federal Trade Commission's Buyer's Guide as required by Part 455 of Title 16 of the Code of Federal Regulations, a smog index chart pursuant to subdivision (b) of Section 44254.

(c) Subdivisions (a) and (b) shall not apply to any vehicle sold by either (1) a dismantler after being reported for dismantling pursuant to Section 11520 of the Vehicle Code or (2) a salvage pool after obtaining a salvage certificate pursuant to Section 11515 of the Vehicle Code. Subdivisions (a) and (b) shall also not apply to any vehicle sold to a dealer or sold for the purpose of being legally wrecked or dismantled.