The basic meaning of breach

An express warranty creates an obligation that goods will conform to a particular factual representation made in connection with the sale.

A possible breach occurs when the delivered goods materially differ from:

• An affirmation of fact
• A product-performance promise
• A description or specification
• A sample
• A model or demonstration

The analysis begins with the exact promise. A buyer cannot usually establish breach merely by showing disappointment, inconvenience, or a general belief that the product should have been better.

Goods that do not match a factual promise

A seller may promise that goods possess a specific feature, material, condition, capability, or measurable performance level.

Possible examples include:

• A battery does not provide the stated operating duration.
• A device does not work with the specifically named system.
• A product lacks a promised component or function.
• Goods sold as new are actually refurbished or previously used.
• A machine cannot handle the stated load or output.

Testing should account for any disclosed conditions, tolerances, installation requirements, configurations, or measurement methods.

Goods that do not match their description

A product description may create an express warranty that the goods will conform to that description.

A breach issue may arise when:

• The material differs from the listing.
• The dimensions are materially incorrect.
• The capacity is lower than described.
• The wrong model or configuration is delivered.
• Required accessories or features are missing.
• The condition differs from the stated condition.

Preserve the version of the listing, invoice, specification, or package description that applied when the purchase was made.

Goods that do not match a sample or model

A sample or model may establish an expected product characteristic. A breach may arise when the delivered goods fail to conform to the characteristic represented by that sample or model.

Differences may involve:

• Material
• Color or finish
• Texture
• Construction
• Dimensions
• Controls or operation
• Included features

Some products permit natural or manufacturing variation. Review disclosed tolerances before concluding that any visible difference is a breach.

The product does not have to be completely broken

Express warranty claims often concern conformity rather than total product failure.

For example, a chair may remain usable but contain another material than the one promised. A storage device may function but provide materially less capacity than described. A replacement part may operate but fail to fit the named product.

A manufacturer defect warranty may focus on repairable defects, while a separate express warranty may concern whether the product was accurately described in the first place.

Materiality and minor differences

Not every small variation necessarily creates the same type of claim or remedy.

Relevant questions may include:

• Was the difference within a disclosed tolerance?
• Did the difference affect function or value?
• Was the characteristic important to the transaction?
• Can the problem be corrected?
• Did the buyer accept a substitution?
• Did the seller disclose the change before delivery?

A seemingly small difference may still matter when the promise involved safety, compatibility, regulatory compliance, authenticity, or a specifically requested feature.

Who may be responsible for the breach?

Responsibility commonly follows the party that made or adopted the disputed express warranty.

That party may be:

• The manufacturer
• The retailer
• A dealer
• A distributor
• An importer
• An online marketplace seller
• Another commercial seller

A retailer may make a promise that does not appear in the manufacturer's standard warranty. The manufacturer may dispute responsibility for that independent retailer statement.

Evidence of the express warranty

Evidence should preserve the exact representation and its connection to the transaction.

Useful records include:

• Advertisements and product-page screenshots
• Packaging and labels
• Technical specifications
• Emails, messages, and sales chats
• Invoices and purchase orders
• Photographs of samples or display models
• Witness information for spoken statements

Save the complete context, including footnotes, qualifications, selected variations, and model numbers.

Evidence that the goods did not conform

The claimant should document the difference objectively where possible.

Evidence may include:

• Photographs and video
• Measurements
• Capacity or performance tests
• Material analysis
• Inspection reports
• Diagnostic records
• Compatibility errors
• Expert findings

Use the testing conditions stated in the representation. A result measured under unrelated conditions may be less persuasive.

Notice of breach

Under the UCC framework, a buyer who has accepted goods generally must notify the seller of a claimed breach within a reasonable time after discovering or when the buyer should have discovered it.

Written notice should identify:

• The product and transaction
• The exact express warranty
• The nonconformity
• The discovery date
• The supporting evidence
• The requested response or remedy

State law determines how the notice rule applies. Prompt written notice creates a clearer record than relying only on telephone conversations.

Opportunity to inspect or cure

The seller or warrantor may request an opportunity to inspect the goods, verify the nonconformity, or attempt repair or replacement.

Before altering or disposing of the product:

• Photograph its condition.
• Preserve packaging and labels.
• Keep serial and model numbers.
• Retain removed parts where practical.
• Record any emergency repair.
• Request written inspection instructions.

Do not allow avoidable damage to continue merely to preserve a claim. Take reasonable steps to prevent additional loss.

Possible remedies

Potential remedies depend on the agreement, applicable state law, federal law where relevant, and the facts of the breach.

Possible outcomes may include:

• Repair
• Replacement
• Refund
• Price adjustment
• Credit
• Damages measured under applicable law

The agreement may limit the remedy to one or more options. A remedy limitation is different from a statement that no warranty existed.

Can acceptance prevent a breach claim?

Accepting or using goods does not automatically eliminate every warranty claim. However, acceptance, inspection, notice, repair, continued use, and product changes can affect available remedies.

Revocation of acceptance may be available in some circumstances involving substantial nonconformity, but it has separate legal requirements and timing rules.

Preserve evidence of when the nonconformity was discovered and why it was not identified earlier.

Breach of express warranty checklist

1. Identify the exact affirmation, promise, description, sample, or model.
2. Identify who made the warranty.
3. Connect it to the purchased goods.
4. Preserve the transaction records.
5. Document the product difference objectively.
6. Record the discovery date.
7. Provide prompt written notice.
8. Preserve the product for inspection.
9. Review disclaimers and remedy limitations.
10. State the requested remedy clearly.

Breach of express warranty: key takeaway

A breach of express warranty may occur when goods fail to conform to a factual promise, description, sample, or model that became part of the sales bargain.

The strongest claim identifies the warranty precisely, connects it to the transaction, documents the nonconformity, provides timely notice, and preserves the product and supporting evidence.

Related express warranty guides

Frequently asked questions