Car Warranties: The Basics

Learn about express and implied automobile warranties and how to enforce them.

Reviewed by , Attorney University of Denver Sturm College of Law
Updated 8/30/2024

An "automobile warranty" is a promise by a manufacturer or dealer that it will repair or replace defects in your car or that your car will be of a certain quality for a specified period of time. Warranties aren't just for new cars and aren't always in writing. In some cases, even used cars purchased "as is" are covered by warranties.

If you take the time to find out what warranties come with your car, what repairs those warranties cover, and how to enforce your warranties, you might save yourself a significant amount of money when your car needs repair.

Express Warranties for Vehicles

"Express warranties" are specific promises to repair your car or statements about the quality of your car that are written or orally communicated to you by the manufacturer or seller. An express warranty can also be created through promises in advertisements.

Example of an Express Warranty

For example, an ad claiming that "This car is made of pure steel!" is an express warranty that the automobile is made of steel. If you discover that the car is made of plastic, you can demand that the warrantor take the car back because it has breached the warranty.

Manufacturer's Warranty

All new cars come with a manufacturer's warranty that covers most repairs for a specified period of time. Some used cars also come with an express warranty.

Example of a Manufacturer's Warranty

For example, if a car is less than a year or two old, the manufacturer's warranty might still be in effect. Or, the seller may offer a warranty that covers certain systems or repairs.

Implied Warranties for Cars

"Implied warranties" aren't written or spoken but automatically apply when you purchase a car (unless the car is sold "as is"). The two types of implied warranties are the implied warranty of merchantability and the implied warranty of fitness.

Implied Warranty of Merchantability

The "implied warranty of merchantability" assures that an automobile will work as expected, given its age and condition. This usually means that the car is in average condition for the price paid and is fit for safe and reliable transportation. It doesn't guarantee a perfect car.

Implied Warranty of Fitness

The "implied warranty of fitness" applies when you buy an automobile with a specific purpose in mind. If you make the seller aware of your purpose for the car—for example, to climb your steep driveway—and rely on the seller's judgment to select a suitable car, the implied warranty of fitness guarantees that the car will work for that purpose.

In most states, implied warranties last forever. In a few states, however, the length of the implied warranty is the same as that of any express warranty that comes with the automobile.

Secret Warranties

Many automobile manufacturers have "secret warranty" or "warranty adjustment" programs. Under these programs, the manufacturer will do free repairs on vehicles with persistent problems, even after the warranty expires, to avoid a recall and bad press. According to the Center for Auto Safety, at any given time, there are approximately 500 secret warranty programs available through automobile manufacturers.

Unfortunately, manufacturers don't advertise these programs. So, a car owner often won't know about the available relief unless they complain about a problem and demand that the manufacturer repair it after the warranty has expired. In a few states, manufacturers have to tell eligible consumers about secret warranty programs—usually within 90 days of adopting the program.

"As Is" Vehicle Sales

If a used car is sold "as is," the implied warranties don't apply. So, you must pay for all repairs that aren't covered by an express warranty, even if the car breaks down on the way home from the dealership.

Limitations on As Is Vehicle Sales

However, just because the seller says the sale is "as is" doesn't always mean it is. State and federal laws don't allow "as is" sales in certain situations, like when:

  • There is an express written warranty.
  • You buy a service contract from the seller within 90 days after purchasing the car.
  • A state law explicitly prohibits or limits "as is" sales.
  • The seller doesn't strictly comply with state law requirements for selling the car "as is."
  • The seller does not provide conspicuous notice that the sale is "as is."

Enforcing Your Car Warranty Rights

Usually, you must notify the manufacturer if you think your car doesn't live up to the promises in the warranty. If you keep using the car without notifying the manufacturer of the defect, you might lose your right to enforce the warranty.

Notify the Manufacturer

So, notify the manufacturer as soon as you discover a defect, and do it again in writing if the manufacturer ignores you the first time you complain. Usually, notifying an authorized dealer constitutes notice to the manufacturer—but check your Owner's Manual to make sure.

All warranties require that you give the manufacturer an opportunity to fix the defect.

Keep Good Records

Always keep written records of your communications with the manufacturer or dealer, even if it's only a note of the time and day you talked on the phone, who you talked to, and what was said. This will help protect you if you ever have to go to court or arbitration.

Limitations

Not every problem or defect will qualify as a "breach of warranty." It depends on the terms of the warranty and the severity of the problem.

Also, most warranties have time limits. If you discover the problem after the warranty has expired, you'll probably be out of luck. However, there is an exception to this rule: If the car was repaired during the warranty period by someone authorized by the seller, the manufacturer must extend your original warranty by the amount of time the car was in the repair shop.

Talk to a Lawyer

If the seller refuses to honor your warranty, you might be able to cancel the sale. But the rules for doing this are complicated. You'll probably need to consult with a lawyer.

Learn More

To learn more about purchasing a used or new car, get Nolo's Encyclopedia of Everyday Law, by the editors of Nolo. This handy guide contains hundreds of answers to the average American's most frequently asked legal questions.

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