What Would Void A Car Warranty?

Published Date: October 4, 2023

What Would Void A Car Warranty

When you purchase a new car, one of the significant benefits is the warranty that comes with it. A car warranty offers peace of mind, ensuring that the manufacturer will cover the repair costs if something goes wrong. However, knowing that some actions and circumstances can void your car warranty is essential. Here, we will explore these actions and how to avoid them.

Things That Would Void A Car Warranty

Voiding a car warranty means the manufacturer or dealer will no longer honor the warranty terms, leaving you responsible for covering any repair or maintenance costs. Let’s take a look at some of the common mistakes that would void a car warranty.

Maintenance Issues

Extended auto warranties don’t cover any malfunction arising from poor maintenance. If you fail to carry out routine maintenance tasks as per the manufacturer’s instructions, the car warranty provider may deny your claim.

Common improper maintenance problems people face are:

  • Using the wrong lubricating fluid: Not using the correct kind of oil can cause failure of the rod and main bearings, among other issues. You have to use oils only from acceptable fluid makers as specified by your manufacturers.
  • Not performing regular filter, oil, tire, brake etc. changes: Not only should these be conducted as often as specified, but it would be best to get them done at service centers that save records.
  • Not getting regular inspections: They are valuable in determining how well your car performs and is maintained. Car inspections not only certify the state of your vehicle but also tell you how many miles need to be driven before an oil change and warn you about safety.
  • Not getting timely belt replacements: This is necessary as you cannot drive a car that has a worn-out belt.

Losing Receipts

Many don’t return to car dealerships for routine checks and maintenance work after purchasing the car. Indeed, third-party service centers like those associated with your extended car warranty company can offer better deals with the original parts.

However, saving receipts from such work becomes all the more important when you file claims. This helps to prove that the services were made according to the mileage intervals specified by the carmaker and that the correct oil and filters were used.

Aftermarket Modifications

In the past, if you have modified your car after buying it, your warranty could be canceled. But around 1975, a law called the Magnuson-Moss Warranty Act was created, and things got better. 

Now, you can change your car without losing your warranty. However, it’s essential to be careful because if your changes cause a specific problem, you can’t use your warranty to fix it.

Natural Disaster Damage

If your car encounters problems following exposure to a storm or sustains damage due to an accident, your auto warranty won’t be applicable. In these instances, you would typically turn to your car insurance to assist with the repair or replacement costs. 

Reckless Driving

Auto warranty claims can be denied if the car is used recklessly, like racing or off-roading. Reckless driving puts excessive strain on the vehicle, leading to faster wear and tear. This also includes overloading the car or not following traffic rules. 

Manufacturers may monitor racing events, using that data to reject warranty claims from reckless driving. Responsible driving within the vehicle’s intended usage is key to maintaining warranty coverage.

Salvage Titles

If a car has been overhauled after a severe accident or any other mangled situation, it will be issued a salvage title after restoration. But a car that has been salvaged will no longer be eligible for auto warranty coverage as the pre-existing conditions clause kicks in.

Therefore, you should be careful when purchasing a pre-owned car and check its history to find out whether it has a salvage title.

Tampering With Odometer And Other Misuses

Manipulating the odometer voids auto warranties tied to specific mileage limits, disrupting warranty coverage. Misuse of the vehicle, as defined by the warranty provider, can also lead to warranty cancellation. 

Thus, thoroughly understanding the warranty contract is crucial to prevent accidental misuse. Leveraging the manufacturer’s and extended warranties ensures comprehensive coverage and cost savings. Staying mindful of these aspects maximizes warranty benefits and responsible vehicle use.

Know more about the advantages and disadvantages of the auto warranty.

What If A Warranty Claim Is Denied?

If your warranty claim faces denial, taking proactive steps and engaging in effective communication is crucial. Begin by confirming that the repair was correctly documented and explained in the paperwork you submitted to the warranty company. 

Discuss with the mechanic or service advisor to ensure all necessary details were accurately conveyed, addressing any potential misunderstandings.

If the denial originates from the manufacturer, refer to your car’s manual for the customer advocacy number and promptly contact them to discuss the situation. Conversely, if it’s a third-party warranty, consider submitting the claim accompanied by a well-drafted letter outlining the validity of your claim. 

How To Keep Your Warranty Intact?

To ensure your warranty remains valid and prevent accidental nullification, adhere to these fundamental guidelines:

  • Follow Maintenance Schedule: Stick to the manufacturer’s prescribed maintenance schedules, showcasing responsible vehicle ownership through regular upkeep.
  • Utilize Approved Components and Liquids: Confirm that any replacements or repairs involve sanctioned parts and fluids as specified by the manufacturer. Usage of unauthorized components could annul your warranty.
  • Maintain Comprehensive Documentation: Keep thorough records of all maintenance and repairs, noting dates, services performed, and receipts. Well-documented records serve as proof of diligent care and maintenance.
  • Rely on Authorized Service Centers: Opt for authorized service centers for any repairs and maintenance covered by your warranty, steering clear of unauthorized establishments that could compromise your warranty.
  • Adhere to Usage Guidelines: Use your vehicle as intended, avoiding excessive loads or activities not within its design specifications. Complying with usage guidelines helps prevent undue strain on the vehicle.
  • Promptly Address Concerns: Address any identified issues promptly and report them to the manufacturer or warranty provider without delay. Swift action prevents the problem from worsening and potential denial of a claim.
  • Thoroughly Review the Warranty Terms: Carefully read and comprehend the terms outlined in your warranty. Familiarity with what is included and excluded ensures you do not inadvertently void it.
  • Regularly Inspect and Service Your Vehicle: Consistently maintain your vehicle through timely oil changes and inspections. Keeping accurate records of these services proves consistent upkeep.

By faithfully adhering to these directives, you can uphold the legitimacy of your warranty and access the protection and benefits it affords.


In conclusion, knowing the factors that can void your car warranty is essential for responsible car ownership. Neglecting maintenance, unauthorized modifications, reckless driving, and certain events like natural disasters can jeopardize your warranty coverage. Conversely, following the manufacturer’s guidelines can protect your warranty. Staying well informed helps you to fully utilize the benefits offered by your car warranty.


What Makes A Car Warranty Void?

A car warranty can be voided by factors such as improper maintenance, using unauthorized parts or fluids, exceeding mileage limits, engaging in reckless driving, or making unauthorized modifications or repairs.

Does Putting Oil In Car Void Warranty?

Simply putting oil in your car does not void the warranty. However, using incorrect or unauthorized oil types could affect warranty coverage. Adhering to manufacturer-recommended oil guidelines is crucial to maintain the validity of your warranty.

Does Exhaust Void Car Warranty?

If you change your car’s exhaust without asking the manufacturer, it might void your warranty. Changes can affect how your car works and how clean it is, which could break the warranty rules. Always check with the manufacturer before changing the exhaust to avoid losing your warranty accidentally.

Does Modifying A Car Void The Warranty?

Modifying a car can void the warranty, especially if the manufacturer did not approve or recommend the modifications. Alterations to the vehicle’s original specifications or components may impact its performance and safety, leading to warranty nullification.

How to Avoid an Extended Car Warranty Denied Claim?

To prevent a denied claim on your extended car warranty, maintain a detailed record of repairs, maintenance, and oil changes. Additionally, adhere to the recommended maintenance schedule, including critical tasks like oil changes, to keep your vehicle in good condition and ensure claim acceptance. 

bell icon