The Magnuson-Moss Warranty Act, codified beginning at 15 U.S.C. § 2301, is the federal law that governs written warranties on consumer products. It does not force any manufacturer to offer a warranty. What it does is regulate the warranties that are offered: how they must be labeled, what they must disclose, what they may not strip away, and what happens when the warrantor fails to honor them.
Two features make it disproportionately useful to consumers. First, a supplier that gives a written warranty cannot then disclaim the implied warranties that state law supplies. Second, a consumer who wins may recover attorney's fees and costs, which is what makes a $600 appliance dispute economically litigable at all.
What counts as a consumer product and a written warranty
A consumer product under the Act is tangible personal property normally used for personal, family, or household purposes. That reaches appliances, electronics, furniture, tools, and vehicles — including items also used commercially, so long as the normal use is personal. Real property is generally outside it, though components sold separately and attached to a home can qualify.
A written warranty is a written affirmation or promise that the product is defect-free or will meet a specified level of performance over a specified period, or a written undertaking to repair, replace, or refund if the product fails. What is not a written warranty: a description of the product, a statement of what the product does, or a separately purchased service contract. Service contracts are covered by the Act's disclosure provisions but are a different animal from a warranty, and their terms are usually governed primarily by state law.
Watch out: An extended "warranty" sold at checkout for an extra fee is almost always a service contract, not a warranty, because you paid separately for it. That distinction changes which rules apply and, in many states, which regulator oversees the seller.
Full versus limited: a label with legal content
Where the designation requirement applies, the warrantor must choose a side, and "full" is a demanding commitment. A full warranty must, at minimum, remedy the defective product without charge within a reasonable time; may not impose any limitation on the duration of implied warranties; may not exclude or limit consequential damages unless that exclusion appears conspicuously on the face of the warranty; and must give the consumer a choice of refund or replacement after a reasonable number of failed repair attempts. A full warranty also runs to anyone who owns the product during the warranty period, not just the original buyer.
Anything that falls short must be designated "limited." Most consumer warranties in the market are limited, which is not itself a problem — it is simply a signal to read the terms rather than assume them.
| Feature | Full warranty | Limited warranty |
|---|---|---|
| Cost of remedy | Free to the consumer | May charge for labor, shipping, or parts if disclosed |
| Implied warranty duration | Cannot be limited | May be limited to the written warranty's duration if reasonable and conspicuous |
| Who is covered | Any owner during the period | Often original purchaser only |
| After failed repairs | Consumer choice of refund or replacement | Determined by the warranty's own terms |
| Consequential damages | Excludable only by conspicuous disclosure | Excludable only by conspicuous disclosure |
The rule that does the most work
Implied warranties come from state commercial law, not from the federal statute. The implied warranty of merchantability means the goods are fit for the ordinary purposes such goods are used for; the implied warranty of fitness for a particular purpose arises when a seller knows the buyer's specific need and the buyer relies on the seller's judgment.
Ordinarily a seller can disclaim these — that is what "as is" or "all warranties disclaimed" language attempts to do. The federal Act blocks that move in one important circumstance: a supplier who gives a written warranty on a consumer product, or who sells a service contract within a defined window, may not disclaim or modify the implied warranties. It may limit their duration to the duration of a limited written warranty, but only if that limitation is reasonable, conspicuous, and stated in understandable language.
The practical effect is significant. A one-year limited written warranty does not shrink your rights to one year's worth of promises; it also imports an implied warranty of merchantability the seller cannot wipe out. Where a defect shows the product was never fit for ordinary use, that theory often outlasts fine-print exclusions in the written warranty itself.
Tie-in sales, "warranty void" stickers, and repairs
The Act prohibits conditioning warranty coverage on the consumer's use of a branded article or service, unless that item is provided free of charge or the FTC has granted a waiver. This is the "tie-in sales" rule, and it is the reason a manufacturer generally may not tell you that using third-party parts, fluids, or an independent repair shop voids the entire warranty.
What the manufacturer can do is decline to cover damage that a particular part or repair actually caused. The distinction is between blanket voiding, which the statute forbids, and causation, which is a legitimate defense. The FTC has taken enforcement positions against "warranty void if removed" stickers and similar blanket conditions; the agency's warranty rules and interpretations are collected in its rules library.
- The warranty document as delivered, including the full/limited designation and any exclusions
- Proof of purchase showing date, price, seller, and model or serial number
- Every service or repair request with dates, and the warrantor's written responses
- Photos or video of the defect, plus any error codes or diagnostic reports
- Receipts for parts, third-party repairs, shipping, and any charge the warrantor imposed
- Advertising or packaging claims about performance, which can create express warranties independent of the warranty card
Bringing the claim
- Give the warrantor a reasonable chance to cure. The Act contemplates a repair opportunity. Make the request in writing, describe the defect precisely, and keep the response.
- Check for a required dispute mechanism. If the warranty names an informal dispute settlement program and requires its use, resort to it first. Decisions are typically not binding on the consumer but are binding on the warrantor.
- Identify every warranty in play. The written warranty, any implied warranty, advertising promises, and — for vehicles — a state lemon law can all apply to the same defect at once.
- Pick the forum. Federal jurisdiction under the statute requires a substantial amount in controversy and, for class claims, a large number of named plaintiffs, so most individual cases belong in state court. Modest claims often fit in small claims court.
- Ask for fees. The statute allows a prevailing consumer to recover reasonable attorney's fees and costs based on actual time worked. Say so in the demand letter; it changes the arithmetic for the other side.
Practical step: Send one clear written demand that states the product, the purchase date, the defect, the repair history, the remedy you want, and a deadline. Attach the receipt and the warranty. Most warranty disputes that settle, settle at this stage — and the letter becomes exhibit one if they do not.
How it fits with other consumer claims
Warranty law rarely travels alone. Where the seller made false claims about the product, a state unfair and deceptive practices claim may add multiplied damages that the warranty statute does not provide. Where the product is a vehicle, state lemon law procedures often deliver a faster buyback than a general warranty suit. Where the purchase was financed and the account has gone to collections while you dispute the product, review your rights when a collector calls before paying anything.
Check the sales contract for an arbitration clause as well. Warranty claims are fully arbitrable, so the clause changes the forum rather than the right; the trade-offs appear in our guide to arbitration clauses and class-action waivers.
Quick answers
Does the Act give me a warranty if the product came with none?
No. The federal statute regulates warranties that are given; it does not require them. If a product came with no written warranty and the seller effectively disclaimed implied warranties under state law, your remedies may lie elsewhere — in deception, misrepresentation, or product safety law rather than warranty law.
Can a manufacturer refuse coverage because I used aftermarket parts?
Not as a blanket rule. Conditioning warranty coverage on branded parts or authorized service is prohibited unless those are supplied free or the FTC granted a waiver. The manufacturer may still deny a specific claim if it shows the aftermarket part or independent repair caused the failure. Keep receipts and part specifications so causation can be tested rather than assumed.
The warranty expired last month and the defect appeared last year. Am I out of luck?
Not necessarily. A defect reported during the warranty period is generally covered even if the repair happens later, which is why dated written reports matter. Separately, the implied warranty of merchantability has its own limitations period under state law, and a product that was never fit for ordinary use may support a claim beyond the written term.
Do I really get my attorney's fees paid?
The statute permits a prevailing consumer to recover reasonable fees and expenses based on time actually spent, unless the court finds an award inappropriate. It is not automatic and the amount is litigated. Still, fee-shifting is why many consumer warranty lawyers take modest cases, and it is the reason a written demand citing the statute gets a faster response than a phone call.
Where this leaves you
Read the warranty document before you read anything else: find the designation, the duration, the exclusions, and any required dispute program. Report defects in writing while coverage is live. Preserve receipts and repair records. Then treat the written warranty as a floor rather than a ceiling — the implied warranties underneath it are often the stronger claim, and the fee provision is what makes either of them worth pursuing. More consumer topics are collected in the consumer rights and civil claims pathway.