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Warranty for Semi Trucks: What You Need to Know

A row of semi trucks parked in a line

What is it and why is it important?

Warranties for semi trucks are contractual agreements that assure truck owners regarding the repair or replacement of faulty components or systems on used trucks within a specified period after purchase.

They are crucial in commercial truck industry, ensuring the reliability, performance, and longevity of semi trucks.

Warranties offer a safety net and essential protection for owners by covering repair costs for defects in materials or workmanship, reducing financial risks associated with unexpected breakdowns or repairs.

In the context of semi trucks, warranties serve as a form of quality assurance, reflecting manufacturers’ confidence in their products and providing peace of mind to truck owners.

Understanding warranty terms and coverage is essential for truck owners to make informed decisions, manage maintenance schedules effectively, and protect their investment in the vehicle.

Additionally, warranties encourage manufacturers to maintain high standards of quality and customer satisfaction, fostering trust and loyalty within the trucking industry.

Semi trucks lined up on a parking lot at logistics warehouse

Types of Warranties for Semi Trucks

Manufacturer's Warranty

1. What manufacturer's warranty covers

A single truck manufacturer’s warranty typically covers defects in materials and workmanship for a certain period after the purchase of the semi truck.

This means that if there are any issues with the truck that are due to faults in manufacturing or materials used, the manufacturer will repair or replace the affected parts under right warranty and at no additional cost to the owner.

The coverage of truck warranties may include engine components, transmission, axles, suspension, and other parts of truck warranties, covering major equipment and systems of the truck.

2. Duration and limitations of manufacturer's warranty

The duration of a manufacturer’s warranty can vary depending on the most used commercial truck manufacturer and the specific model of the semi truck.

It typically lasts for the second or third year for a limited time period or until a certain mileage threshold is reached, whichever comes first.

There are often limitations and exclusions in the manufacturer’s warranty.

For example, certain components may be covered for a shorter period compared to others, and regular wear and tear-items may not be covered.

Moreover, the comprehensive warranty program may require the truck owner to adhere to specific maintenance schedules and use approved replacement parts.

3. Advantages and disadvantages of relying solely on manufacturer's warranty


  • Peace of mind: Owners have assurance that major defects will be addressed by the manufacturer during the warranty period.
  • Cost savings: Repair or replacement of covered components are typically provided at no extra cost, which can save truck owners significant expenses.
  • Brand reputation: Manufacturers often strive to maintain a positive reputation by standing behind their products and providing good warranty support.


  • Limited coverage: Manufacturer’s warranties may not cover all potential issues or failures that could arise with the semi truck.
  • Restrictions: Owners may be required to perform maintenance at specific service centers or adhere to strict guidelines to maintain warranty coverage.
  • Expired coverage: Once the manufacturer’s warranty expires, the owner is responsible for all repair and maintenance costs, which can be significant for semi trucks.
  • Lack of customization: Manufacturer’s warranties are typically standard and may not fully address the unique needs or usage patterns of individual truck owners.

Extended Warranty

1. Definition and purpose of extended warranties

An extended warranty is a service contract offered by a third-party provider or sometimes by the original equipment manufacturer, which has extra protection and extends the coverage beyond the original manufacturer’s warranty period.

The purpose of an extended warranty is to cover repair costs and provide additional protection and peace of mind to the owner of the semi truck against unexpected repair costs that may arise after the manufacturer’s warranty expires.

Extended warranties are essentially insurance policies that cover certain repairs and replacements for a specified duration, typically extending covered repairs and engine replacement for several years or additional mileage beyond the manufacturer’s warranty.

2. Coverage provided by extended warranties

The coverage provided by extended warranties can vary significantly depending on the provider and the specific terms of the warranty contract.

Generally, extended warranties cover repairs and replacements of the most major components and systems of the semi truck that may fail due to defects in materials or workmanship.

Coverage may include engine components, transmission, drivetrain, electrical systems, and sometimes even certain wear and tear items.

Some extended warranties offer additional benefits such as warranty programs such as roadside assistance, towing services, other warranty programs, and rental vehicle reimbursement during repairs.

3. Factors to consider before purchasing an extended warranty

  • Cost vs. Coverage: Evaluate the cost of the extended warranty compared to the potential savings in repair costs. Consider whether the coverage provided justifies the expense of the warranty.
  • Coverage Details: Carefully review the terms and conditions of the extended warranty contract, including what is covered, what is excluded, and any limitations or restrictions.
  • Provider Reputation: Research the reputation and reliability of the warranty provider. Choose a reputable company with a history of honoring claims and providing excellent customer service.
  • Deductibles and Limits: Understand any deductibles, co-payments, or coverage limits associated with the extended warranty. Determine if the deductible and coverage limits are reasonable and acceptable.
  • Transferability and Cancellation: Check if the extended warranty is transferable if you sell the truck and whether it can be canceled or refunded if no longer needed.
  • Maintenance Requirements: Be aware of any maintenance requirements specified in the extended warranty contract. Failure to adhere to maintenance schedules may void the warranty coverage.
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Exclusions and limitations in warranty coverage

While warranties provide valuable protection, they often come with exclusions and limitations that truck owners should be aware of.

Exclusions may include damage caused by accidents, misuse, neglect, or improper maintenance practices.

Certain components of major equipment or systems may have limited coverage or may not be covered at all under the warranty.

Warranty coverage may be voided if the truck is modified or altered in a way that affects its performance or safety.

Maintenance requirements such as using specified fluids, adhering to service intervals, and performing repairs at authorized service centers may also be stipulated in the warranty contract.

How understanding warranty coverage can save money and prevent headaches for truck owners

Understanding the terms and conditions of warranty coverage allows truck owners to make informed decisions about maintenance and repair procedures.

By adhering to maintenance requirements outlined in the warranty, owners can prevent warranty claims from being denied due to neglect or improper maintenance practices.

Awareness of coverage limitations helps owners anticipate potential repair costs that may not be covered under warranty and budget accordingly.

Proper documentation and record-keeping of maintenance and repair activities can help expedite warranty claims processing and ensure that warranty coverage is honored.

Understanding truck warranty options and coverage empowers truck owners to take proactive measures to address issues covered under warranty protection before they escalate into more costly problems.

Overall, a thorough understanding of warranty coverage helps truck owners maximize the value of their warranties, minimize out-of-pocket expenses for repairs, and ensure the longevity and reliability of their vehicles.

Close up of truck

Tips for Maximizing Warranty Benefits

Regular maintenance and servicing requirements

Regular maintenance and servicing are crucial for maximizing warranty benefits and ensuring the longevity and reliability of semi trucks.

Follow the manufacturer’s recommended maintenance schedule outlined in the owner’s manual to keep the truck in optimal condition.

Adhere to service intervals for oil changes, filter replacements, tire rotations, brake inspections, and other routine maintenance tasks.

Regular maintenance helps prevent premature wear and tear on critical components throughout, reduces the risk of unexpected breakdowns, and ensures that the truck operates efficiently.

Documentation and record-keeping practices

Maintain detailed records of all maintenance and repair activities performed on the semi truck’s age throughout, including dates, mileage, services performed, and parts replaced.

Keep receipts, invoices, and service records organized and easily accessible for future reference.

Documentation provides evidence of compliance with warranty maintenance requirements and helps support warranty claims if issues arise.

Proper record-keeping also shares equipment repair costs and facilitates communication with service technicians and warranty providers, ensuring accurate diagnosis and resolution of problems.

Understanding warranty terms and conditions

Read and understand the terms and conditions of the warranty coverage provided by the manufacturer or third-party warranty provider.

Familiarize yourself with the scope of coverage, including what is covered, what is excluded, and any limitations or restrictions.

Pay attention to warranty duration, mileage limits, and any specific maintenance requirements stipulated in the warranty contract.

Be aware of the process for filing warranty claims, including documentation requirements, claim submission procedures, and timelines for claim resolution.

Clarify any uncertainties or ambiguities in the warranty terms with the manufacturer or warranty provider to avoid misunderstandings or disputes later on.