Manufacturers and sellers are legally bound by the promises they make about their products.
When a company affirmatively represents that a product is safe, reliable, or suitable for a particular use—and that representation turns out to be false—California law allows injured consumers to bring a breach of express warranty claim.
In products-liability cases, express warranty claims often arise from marketing statements, labels, manuals, and sales representations that overstate safety or performance while downplaying real risks.
What Is an Express Warranty?
An express warranty is created when a seller makes a specific promise or factual representation about a product that becomes part of the basis of the bargain.
Under UCC § 2313, an express warranty may be created by:
- Affirmations of fact or promises about the product
- Descriptions of the product
- Samples or models shown to the buyer
Importantly, no special words like “warranty” or “guarantee” are required. If a reasonable consumer would rely on the statement in deciding to purchase or use the product, an express warranty may exist.
What Must Be Proven in an Express Warranty Claim?
To establish a breach of express warranty in a California products-liability case, a plaintiff generally must prove:
- The defendant made an express warranty about the product
- The product failed to conform to that warranty
- The plaintiff was harmed
- The failure to conform was a substantial factor in causing the harm
Unlike negligence, the focus is not on how carefully the product was made—but whether it performed as promised.
Common Sources of Express Warranties
Express warranties frequently arise from:
- Product packaging and labels
- Advertising and marketing materials
- Instruction manuals and owner’s guides
- Safety claims or performance assurances
- Sales pitches or written product descriptions
For example, statements that a product is “safe for everyday use,” “tested for consumer safety,” or “designed to prevent injury” may create enforceable warranties.
How Express Warranty Claims Apply in Product Injury Cases
In injury cases, breach of express warranty claims often involve:
- Products marketed as safe despite known hazards
- Safety features that do not function as promised
- Equipment promoted for a specific use that proves dangerous
- Consumer products sold with misleading safety assurances
If a product fails to meet the expectations created by the seller’s own representations—and that failure causes injury—liability may follow.
Express Warranty vs. Strict Liability
While express warranty and strict liability claims often overlap, they are distinct.
- Strict liability focuses on whether the product was defective
- Express warranty focuses on whether the product matched the seller’s promises
An express warranty claim can succeed even where a defendant argues that the product complied with industry standards, if it failed to live up to its own stated guarantees.
Why Express Warranty Claims Matter
Express warranty claims hold companies accountable for what they say, not just what they make.
They prevent manufacturers and sellers from overstating safety or performance to boost sales while shifting the risk of injury onto consumers.
In many products-liability cases, express warranty claims strengthen the overall case by tying injuries directly to the defendant’s own words.
How Express Warranty Fits Into California Products Liability Law
Breach of express warranty claims are commonly pleaded alongside:
- Strict liability
- Negligence
- Implied warranty claims
- Failure-to-warn theories
Together, these causes of action form a comprehensive framework for holding manufacturers accountable for dangerous or misleading products.
For a broader overview of California product-injury law, see our Products Liability Master Guide.
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Why Legal Representation Matters
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At WIN Trial Lawyers, our team fights to ensure that your recovery reflects the full extent of your suffering—not just your bills.
At WIN Trial Lawyers, we know how personal injury claims can be can be. Victims often face mounting medical bills, lost wages, and emotional trauma. Our team has successfully taken on insurance companies and third parties, recovering millions for injured clients.
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If you or a loved one has been injured, don’t face this alone. The sooner you act, the stronger your case will be.
