Magnuson-Moss Warranty Act: Claims, Remedies, and Filing

The Magnuson-Moss Warranty Act is the 1975 federal law that gives you a right to sue when a manufacturer or seller fails to honor a written warranty, implied warranty, or service contract on a consumer product.¹ Often called the federal lemon law, it covers cars, appliances, electronics, HVAC systems, and just about anything else bought for personal or household use. Its two most important features are ones most consumers never learn about: it stops manufacturers from stripping away implied warranties whenever they give you any written warranty, and it lets the court order the manufacturer to pay your attorney’s fees if you win.

What the Act Covers

A “consumer product” under the Act is any tangible personal property normally used for personal, family, or household purposes, including items attached to or installed in real property like a furnace or a built-in dishwasher.² Vehicles, boats, computers, appliances, power tools, and their individual components all qualify. If a manufacturer warrants the compressor inside your refrigerator or the transmission in your car separately from the product as a whole, that component warranty falls under the Act too.

Three types of obligations trigger its protections:

Written warranties — any written promise that a product is free of defects or will meet a specified performance level for a set period.¹
Implied warranties — unwritten promises created by state law, most importantly the implied warranty of merchantability, which guarantees the product is fit for its ordinary purpose.
Service contracts — written agreements to maintain or repair a consumer product over a fixed period, commonly sold as “extended warranties.”²

Used products are covered if they carry an active warranty when sold. A certified pre-owned vehicle with a manufacturer-backed warranty, or a used appliance sold with a dealer service contract, qualifies. Products sold “as-is” with no warranty of any kind generally fall outside the Act’s reach, because there is no warranty obligation to enforce.

Full Versus Limited Warranties

Every written warranty on a consumer product must be labeled either “Full” or “Limited.”³ The label matters because a full warranty comes with federal minimum standards that give you stronger rights.

A full warranty must:⁴

Fix defects at no charge within a reasonable time.
Not shorten the duration of implied warranties.
Not exclude or limit consequential damages unless the exclusion appears conspicuously on the face of the warranty.
Give you a choice between a full refund and a free replacement if the product still has defects after a reasonable number of repair attempts.

A limited warranty is anything that falls short of those standards, and most warranties consumers see are limited. A limited warranty can restrict repair to certain parts, cap the warrantor’s liability, or require you to pay shipping costs. It can also limit the duration of implied warranties to the length of the written warranty. What it cannot do is disclaim implied warranties entirely.

The Implied Warranty Floor

Here is where the Act quietly reshapes the deal in your favor. If a supplier gives you any written warranty, or sells you a service contract within 90 days of purchase, that supplier cannot disclaim or modify implied warranties on the product.⁵ A manufacturer might offer a narrow written warranty covering only the motor in a washing machine, but because that written warranty exists, the manufacturer cannot strip away the broader implied warranty that the entire machine will work as a washing machine should.

Under a full warranty, implied warranties cannot be limited in duration at all. Under a limited warranty, the seller may restrict implied warranty duration to match the written warranty period, but may never eliminate implied warranties outright.⁶ Every product sold with any written warranty or service contract carries a floor of implied warranty protection that the seller cannot sign away.

Tie-In and “Warranty Void” Restrictions

The Act bans warrantors from requiring you to buy specific brand-name parts or use a particular repair service to keep your warranty intact, unless those parts or services are provided free of charge.⁶ A car manufacturer cannot void your warranty simply because you used an independent mechanic or an aftermarket oil filter.

The FTC has taken direct aim at “warranty void if removed” stickers and similar tactics, warning several major companies that seal-based warranty restrictions are illegal.⁷ If you’ve opened a device, replaced a component with a third-party part, or peeled off a tamper sticker, your warranty is not automatically void. The manufacturer has to prove that the specific modification or part you used actually caused the defect before denying coverage.

When You Have a Valid Claim

A claim ripens when a warrantor fails to live up to its warranty obligations and the product still has a defect after a reasonable opportunity to fix it. The federal statute does not set a specific number of repair attempts or days out of service. It uses the flexible standard of “a reasonable number of attempts” to remedy the defect.⁴

Don’t confuse that with state lemon law thresholds. Many state lemon laws use bright-line rules, commonly three or four repair attempts for the same defect, or 30 cumulative days out of service. The federal Act deliberately leaves the question flexible. Courts weigh the nature of the defect, how long repairs took, and whether the warrantor acted in good faith. In some cases, as few as two failed attempts have been enough.

You also have to hold up your end. Refusing to bring the product in for service, or ignoring the warranty’s repair procedures, can undermine your claim. The Act is designed to give both sides a fair shot at fixing the problem before litigation.

Documenting the Problem

Once repair attempts start failing, treat your paperwork like evidence. Every written warranty must disclose the warrantor’s identity, what parts are covered, what the warrantor will do about defects, what you must do, and the step-by-step procedure for getting warranty service.⁸ Compare what the warranty promises against what actually happened.

Keep every repair order and service receipt showing dates, symptoms reported, parts replaced, and work performed. Hold on to your purchase receipt. Log your calls with the manufacturer or dealer, including names and what you were told. If the product was out of service for days or weeks waiting on parts, note those gaps.

In complicated cases — intermittent defects, disputed causes, sophisticated electronics — an independent expert inspection can decide the outcome. An automotive engineer or certified mechanic can explain why the defect is serious and not something routine maintenance would fix. Expert testimony matters most when the manufacturer argues the problem came from how you used the product rather than a manufacturing flaw.

Informal Dispute Resolution

Check your warranty for an informal dispute settlement mechanism. If one exists, the Act generally requires you to use it before filing suit.⁹ These mechanisms are regulated by the FTC and must reach a decision within 40 days of receiving your dispute, though extensions are allowed in certain situations.¹⁰ The decision can include repair, replacement, refund, reimbursement for expenses, or compensation for damages. If it goes against you, or if the manufacturer ignores a decision in your favor, you can go to court.

Where to File

State Court

You can file a Magnuson-Moss claim in any state court of competent jurisdiction with no minimum dollar threshold.⁹ For many consumers, this is the practical choice. Depending on the value of the product and your state’s limits, small claims court may even be an option, with most small claims courts accepting cases in the range of $5,000 to $12,500. Most claims on lower-value products like appliances and electronics land in state court.

Federal Court

Federal district court comes with a higher bar. The total amount in controversy must be at least $50,000, excluding interest and costs, and each individual claim must be worth at least $25.⁹ Class actions filed in federal court under the Act must name at least 100 plaintiffs. Federal court is typically reserved for vehicle claims and other high-value products, or organized class actions involving a widespread defect.

How It Fits With State Lemon Laws

The Act does not replace state lemon laws, and you don’t have to pick one. The federal and state laws coexist, and an experienced attorney will evaluate your situation under both to see which route gets the best result.

State lemon laws tend to have clearer, mechanical triggers: a set number of repair attempts, a set number of days in the shop, a defined window after purchase. When your facts fit those triggers, state law is often faster. The federal Act is broader. It covers products that many state lemon laws exclude, including boats, RVs, motorcycles, appliances, and electronics, and it covers used products sold with a warranty, while most state lemon laws only apply to new vehicles. If you fall outside your state’s requirements but your product came with a warranty that wasn’t honored, the federal Act is likely your remedy.

What You Can Recover

When you win, the court can award damages and equitable relief for the warrantor’s failure to meet its obligations.⁹ Under a full warranty, the refund-or-replacement remedy is built into the statute: after a reasonable number of failed repair attempts, you can choose a refund of the purchase price or a free replacement.⁴ Refunds may be reduced by a reasonable depreciation amount based on your actual use before the defect surfaced.

Under a full warranty, the warrantor cannot exclude or limit consequential damages unless the exclusion appears conspicuously on the face of the warranty.⁴ Consequential damages cover the real-world costs the defective product caused you: towing bills, rental car expenses, lost wages, hotel stays if a broken RV strands you on a trip. Under a limited warranty, the warrantor can exclude these damages if the exclusion is clearly stated.

Attorney’s Fees

Fee-shifting is what makes the Act enforceable in practice. A prevailing consumer may recover attorney’s fees based on actual time expended, plus court costs and litigation expenses.⁹ The award is discretionary — the court decides whether it’s appropriate — but in practice, fee-shifting is granted in the overwhelming majority of successful cases. Without it, most consumers couldn’t justify hiring a lawyer to fight over a $30,000 car or a $2,000 appliance. Many lemon law attorneys take cases on contingency specifically because this provision exists.

Don’t Wait Too Long

The Act does not set its own filing deadline. The statute of limitations from the state where the breach occurred applies.⁶ Most states set a four-year deadline for breach of warranty claims, measured from the date of purchase, though some states run it from the date the breach was discovered. Waiting too long after repeated repair failures is the single most common way consumers lose claims they would otherwise win. If you’re past two or three failed repair attempts and the product is still broken, talk to an attorney sooner rather than later.

1
Office of the Law Revision Counsel. 15 USC Chapter 50 – Consumer Product Warranties
2
Office of the Law Revision Counsel. 15 USC 2301 – Definitions
3
Office of the Law Revision Counsel. 15 USC 2303 – Designation of Written Warranties
4
Office of the Law Revision Counsel. 15 USC 2304 – Federal Minimum Standards for Warranties
5
Office of the Law Revision Counsel. 15 USC 2308 – Implied Warranty Restrictions
6
Federal Trade Commission. Businessperson’s Guide to Federal Warranty Law
7
Federal Trade Commission. FTC Staff Warns Companies That It Is Illegal to Condition Warranty Coverage on the Use of Specified Parts or Services
8
Office of the Law Revision Counsel. 15 USC 2302 – Rules Governing Contents of Warranties
9
Office of the Law Revision Counsel. 15 USC 2310 – Remedies in Consumer Disputes
10
eCFR. 16 CFR 703.5 – Operation of the Mechanism