McDonald's advertising has been accused of being unethical in several ways:
1) Using misleading or false information to promote products without disclosing defects or side effects.
2) Stereotyping women as sex symbols rather than focusing on the products.
3) Making unverified claims about products' quality or benefits without evidence.
The Federal Trade Commission regulates deceptive advertising and considers an ad deceptive if around 20% of consumers are misled by claims not supported by facts. Complaints trigger investigations including consumer surveys to determine if ads mislead audiences. Unethical tactics can include surrogate advertising, puffery, exaggeration, women stereotyping, and improper brand comparisons.