N.M. Code R. § 12.2.4.11
“Over invoice/under invoice” discount claims: It is an unfair or deceptive trade practice for a dealer to use the term “invoice” or “invoice price” in advertising unless the term is used in reference to the manufacturer’s or distributor’s total invoice price on a vehicle and the advertisement clearly and conspicuously includes one or both of the following disclosures:
B. “the factory invoice refers to the manufacturer’s or distributor’s total invoice price”.
[5-1-98; Recompiled 10/15/01]