Truth in Lending Act (TILA): Federal legislation that requires full disclosure of credit terms and costs in vehicle financing transactions. Mandatory compliance required if the sale involves financing arrangements.

FTC Used Car Rule: Federal regulation requiring 'Buyer's Guide' display on used vehicles and mandating specific disclosures about warranty coverage and terms of sale.

Magnuson-Moss Warranty Act: Federal law governing consumer product warranties, requiring clear and detailed disclosure of warranty terms and conditions in vehicle sales.

Federal Odometer Act: Federal legislation requiring accurate disclosure of vehicle mileage and written documentation for vehicles less than 10 years old.

State Vehicle Sales Laws: State-specific legislation covering vehicle sales, including titling requirements, registration procedures, lemon laws, and warranty provisions. Varies by jurisdiction.

State Consumer Protection Laws: State-level regulations protecting consumers from unfair and deceptive practices in vehicle sales, including specific disclosure requirements.

State Contract Laws: Fundamental state laws governing contract formation, enforcement, and statute of frauds requirements for vehicle sales agreements.

DMV Regulations: State Department of Motor Vehicles rules governing vehicle transfer of title, registration procedures, and required documentation for vehicle sales.

Uniform Commercial Code (UCC): Article 2 of the UCC governing sale of goods, including specific provisions for vehicle sales and warranty terms.

Environmental Regulations: Federal and state environmental requirements, including emissions standards compliance and other environmental considerations for vehicle sales.