Glossary

Magnuson-Moss Warranty Act

A federal law that governs written warranties on consumer products and lets buyers sue when a company breaks a written or implied warranty.

The Magnuson-Moss Warranty Act, 15 U.S.C. 2301 and following sections, is the main federal law on consumer product warranties. It does not force companies to offer a warranty, but if they do offer a written one, the Federal Trade Commission's rules require them to disclose its terms clearly, label it "full" or "limited," and make it available before the sale. The Act also limits a seller's ability to disclaim implied warranties, such as the basic promise that a product works for its ordinary purpose, when it offers a written warranty or a service contract.

The Act gives consumers a right to sue for breach of warranty and lets courts award attorneys' fees to a winning consumer, which makes small claims worth bringing. There are limits on federal court access. Under 15 U.S.C. 2310(d)(3), a Magnuson-Moss claim can go to federal court only if each individual claim is at least $25, the total amount in controversy is at least $50,000, and, for a class action, there are at least 100 named plaintiffs. Cases that do not meet those thresholds can still be filed in state court.

Many defect class actions include a Magnuson-Moss count alongside state warranty and consumer protection claims. Typical targets include appliances that fail early, vehicles with known defects, and companies that void warranties if customers use third-party parts or repair shops. The FTC has said that conditioning a warranty on using a particular brand of parts is generally prohibited unless the part is provided free.

Keep your receipt, warranty, and repair records. See the Magnuson-Moss Warranty Act explainer, the LG refrigerator lawsuit, and our lemon law guide.

Sources.

Statutes, court rules, appellate opinions, and bar publications we relied on. See our editorial standards.

  1. 1.15 U.S.C. 2310, Remedies in consumer disputes (Cornell LII)
  2. 2.FTC: Businessperson's Guide to Federal Warranty Law