Emissions Warranties for 1995 and
Newer Light-duty Cars and Trucks
under 8,500 Pounds Gross Vehicle
Weight Rating (GVWR)
Federally required emission control warranties protect you, the
vehicle owner, from the cost of repairs for certain emission
related failures that result from manufacturer defects in materials
and workmanship or that cause your vehicle to exceed federal emis-
sion standards. Manufacturers have been required by federal law to
provide emission control coverage for vehicles since 1972. There are
two federal emission control warranties discussed in this fact sheet:
(A) "Performance Warranty" and (B) "Design and Defect Warranty".
This fact sheet explains each warranty in detail, provides you with
a list of some of the parts covered under these warranties, explains
the procedures for making an emissions warranty claim, and answers
some of the most commonly asked questions about emissions war-
ranties. Finally, we will give you some tips on how to prevent future
emission-related failures and maintain the longevity of your vehicle's
engine.
A. Perform a nee Warranty
The Performance Warranty covers repairs which are required during the first 2 years
or 24,000 miles of vehicle use (whichever first occurs) because the vehicle failed an
emission test. Specified major emission control components are covered for the first
8 years or 80,000 miles (whichever first occurs). If you are a resident of an area with
an Inspection and Maintenance (I/M) program that meets federal guidelines, you are
eligible for this warranty protection provided that:
&EPA
United States
Environmental Protection
Agency
Office of Transportation and Air Quality
EPA-420-F-15-035
October 2015
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• Your car or light-duty truck fails an approved emissions test; and
• Your vehicle is less than 2 years old and has less than 24,000 miles (up to 8 years/80,000
miles or certain components); and
• Your state or local government requires that you repair the vehicle; and
• The test failure does not result from misuse of the vehicle or a failure to follow the manu
facturers' written maintenance instructions; and
• You present the vehicle to a warranty-authorized manufacturer representative, along
with evidence of the emission test failure, during the warranty period.
During the first 2 years/24,000 miles (whichever first occurs), the Performance Warranty covers
any repair or adjustment which is necessary to make your vehicle pass an approved, locally-
required emission test and as long as your vehicle has not exceeded the warranty time or mileage
limitations and has been properly maintained according to the manufacturer's specifications,
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» B. Design and Defect Warranty
The Design and Defect Warranty covers repair of emission related parts which become defective
during the warranty period. The Design and Defect warranty for model year 1995 and newer
light-duty cars and trucks is outlined below,
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C/J Design and Defect Warranty Coverage for 1995 and newer light-duty vehicles:
• Emission control and emission related parts are covered for the first 2 years or 24,000
miles of vehicle use (whichever first occurs); and
• Specified major emission control components are covered for the first 8 years or 80,000
miles of vehicle use (whichever first occurs).
According to federal law, an emission control or emission related part, or a specified major
emission control component, that fails because of a defect in materials or workmanship, must
be repaired or replaced by the vehicle manufacturer free of charge as long as the vehicle has not
exceeded the warranty time or mileage limitations for the failed part.
Design and Defect Warranty coverage may vary depending on the type of vehicle you have (e.g.,
heavy-duty trucks, motorcycles or recreational vehicles have different time and mileage require-
ments). In addition, manufacturers can voluntarily offer warranty coverage beyond the federally
mandated warranty coverage of the first 2 years or 24,000 miles. To determine the length of
C]J warranty coverage that applies to your vehicle, look for the emissions warranty information in
your owner's manual or warranty booklet. If you own a California vehicle, you may be entitled
to additional warranty coverage.
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The owner's manual or warranty booklet will also provide you with guidance on the procedures
for obtaining warranty coverage. If you have questions about the emissions warranties on your
vehicle or need help in filing a warranty claim, contact your local car dealer or the manufactur-
er's zone or regional representative listed in your owner's manual or warranty booklet.
What Emission Control and Emission Related Parts Are Covered by
The Design and Defect Warranty?
An emission control part is any part installed with the primary purpose of controlling emissions.
An emission related part is any part that has an effect on emissions. Listed below are some examples
of parts or systems which fall under these definitions. A more complete list can be found in your
owner's manual/warranty booklet. If any of the parts listed below fail to function or function
improperly because of a defect in materials or workmanship, causing your vehicle to exceed federal
emission standards, they should be repaired or replaced under the emissions warranty if your vehicle
is less than 2 years old and has been driven less than 24,000 miles. One manufacturer may use
more parts than another, so the following list is not complete for all vehicles,
Emission Control Parts
1. Exhaust Gas Conversion Systems: oxygen sensor, thermal reactor, catalytic converter,
dual-walled exhaust pipe
2. Exhaust Gas Recirculation System: EGR valve, thermal vacuum switch, EGR solenoid,
EGR spacer plate, EGR backpressure transducer, sensor and switches use to control EGR
flow
3. Evaporative Emission Control System: purge valve, fuel filler cap, purge solenoid, vapor
storage canister and filter
4. Positive Crankcase Ventilation (PCV) System: PCV valve, PCV solenoid
5. Air Injection System: Air pump, diverter, bypass, or gulp valve, reed valve, anti-backfire
or deceleration valve
6. Early Fuel Evaporative (EFE) System: EFE valve, thermal vacuum switch, heat riser valve
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7. Fuel Metering System: electronic control module (unit) or EFI air flow meter, computer
O command module or mixture control unit, deceleration controls, electronic choke, fuel
injectors, fuel injection units and fuel altitude compensator sensor, bars or rails for EFI
or TBI systems, mixture settings on sealed fuel mixture control solenoid, diaphragm or
^ other systems, fuel metering components that achieve closed/other feedback control
^*-* sensors/loop operation switches and valves
8. Air Induction System: thermostatically controlled air cleaner, air box
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9. Ignition Systems: electronic spark advance timing advance/retard systems, high energy
electronic ignition
10. Miscellaneous Parts: hoses, gaskets, brackets, clamps and other accessories used in the
above systems
Emission Related Parts
These are examples of other parts of your vehicle which have a primary purpose other than emis'
sions control but which nevertheless have significant effects on your vehicle's emissions. If any
of these parts fail to function or function improperly, your vehicle's emissions may exceed federal
standards. Therefore, when any of the parts of the following systems are defective in materials or
workmanship and have failed in a way that would be likely to cause your vehicle's emissions to
exceed federal standards, they should be repaired or replaced under the emissions warranty:
1. Fuel Injection System: fuel distributor
2. Air Induction System: turbocharger, intake manifold
3. Exhaust System: exhaust manifold
4. Ignition System: distributor, spark plugs, ignition wires and coil
5. Miscellaneous Parts: hoses, gaskets, brackets, clamps, and other accessories used in the
above systems,
What Are Specified Major Emission Control Components?
There are three specified major emission control components, covered for the first 8 years or
80,000 miles of vehicle use (whichever first occurs) on 1995 and newer vehicles:
• Catalytic converters
• The electronic emissions control unit or computer (ECU)
• The onboard emissions diagnostic device or computer (OBD)
Catalytic converters are critical emission control components that have been installed on most
Ocars and trucks manufactured since 1975. Since engines don't burn fuel completely during the
combustion process, the exhaust contains a significant amount of harmful pollutants such as
carbon monoxide, hydrocarbons, and oxides of nitrogen. The catalytic converter aids the
^T conversion of these pollutants to less harmful substances such as carbon dioxide, water vapor,
- , nitrogen, and oxygen before the exhaust is expelled into the environment,
The electronic emissions control unit or computer monitors certain powertrain functions and
controls various operating parameters to help the vehicle run efficiently and with the low-
est possible emissions. Ignition, transmission function, air injection, exhaust gas recirculation
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(EGR), engine operating temperature and fuel system parameters are some of the systems
monitored and/or controlled by the electronic emissions control unit.
The onboard emissions diagnostic device monitors the operation of a vehicle's emission
control system and alerts the driver with a dashboard light when malfunctions occur. The
system will record where the problem is occurring and assist automotive technicians in diagnos-
ing and repairing emission control malfunctions. Since some emission control malfunctions do
not have an adverse effect on vehicle performance, they can go undetected by the driver for
quite some time. The onboard diagnostic device will help catch malfunctions early, preventing
a significant output of harmful exhaust emissions from your vehicle, and possibly in time to be
covered by the emissions control warranty. Often this "device" is part of the electronic control
unit mentioned above.
In the future, there may be other parts or components that qualify for this coverage. Check your
owner's manual or warranty book for possible additional coverage.
How Long Do the Emissions Warranties Apply to Individual Parts of
My Vehicle?
For 1995 and newer model year vehicles, emission control and emission related parts are war-
ranted for the first 2 years or 24,000 miles of vehicle use (whichever first occurs). Specified
major emission-control components are warranted for the first 8 years or 80,000 miles of vehicle
use (whichever first occurs).
Parts with a stated replacement interval, such as, "replace at 15,000 miles or 12 months," are
warranted up to the first replacement point only.
How Do I Know Whether I Am Entitled to Coverage Under the Emis-
sions Warranties?
If you or a qualified automotive technician can show that an emission control or emission
related component, or a specified major, emission-control component, is defective, the repair
or replacement of the part is probably covered under the Design and Defect warranty. If your
vehicle failed a federally approved emissions test and has not exceeded the time and mileage
limitations for the Performance warranty, any repairs or adjustments necessary for your vehicle
to pass should be covered by the manufacturer if the failure was not caused by improper mainte-
nance or abuse. When you believe you have identified a defective part, or your vehicle fails an
emission test, you should follow the procedures for making a warranty claim as identified by the
manufacturer in your owner's manual or warranty booklet. When taking your vehicle in to have
repairs performed under the Performance Warranty, be sure to have with you a copy of the I/M
/i \ test report as proof of your emissions test failure,
/""^J May I Have My Regular Repair Facility Perform Warranty Repairs?
^^^/ If you plan to have the manufacturer pay for a repair under either of the emissions warranties,
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you must take the vehicle to a facility authorized by the vehicle manufacturer for repair to give
them the opportunity to diagnose and repair it. Note that if your regular repair facility is not
authorized by the vehicle manufacturer, they are not obligated to advise you of parts that are
covered under warranty. Before giving your automotive technician the "go ahead" to perform
repairs, check your owner's manual/warranty booklet for possible warranty coverage.
Do the Emissions Warranties Apply to Used Vehicles?
Yes. It does not matter if you bought your vehicle new or used from a dealer or anyone else. As
long as the vehicle has not exceeded the warranty time or mileage limitations, these warranties
apply.
IMPORTANT NOTE: Before buying a used vehicle, be sure that all of the emission control
components as originally installed by the manufacturer are present and functioning properly. If
emission control components are missing or have been tampered with, or the configuration of
the exhaust system has been changed, the emissions warranties on this vehicle may be void. In
addition, if you live in an area with an I/M program, the vehicle will probably not pass inspec-
tion and you will incur the expense of parts or repairs necessary for the vehicle to pass,
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>T\ Can Any Portion of An Emissions Warranty Repair Be Charged to Me?
If you have valid warranty claim, you cannot be charged for any costs associated with the
diagnosis or repair of the problem, including labor charges, parts, or miscellaneous items that
are necessary to complete the repair. For example, if a manufacturer agrees to replace a catalytic
converter under the emissions warranty, you should not be charged for the diagnosis of the bad
converter, or any pipes, brackets, adjustments, or labor needed to complete the replacement.
What Reasons Can the Manufacturer Use to Deny a Warranty Claim?
If your vehicle is within the age and mileage limits for the applicable emissions warranty, the
manufacturer can only deny coverage if evidence shows that you have failed to properly main-
tain and use your vehicle, causing the part or emission test failure. Some examples of misuse and
malmaintenance include the following:
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• vehicle abuse such as off-road driving or overloading; or
• tampering with emission control parts or systems, including removal or intentional dam-
age of such parts or systems; or
• improper maintenance, including failure to follow maintenance schedules and instruc
/i \ tions specified by manufacturer, or use of replacement parts which are not equivalent to
^^ the originally installed parts.
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What Should I Do If My First Attempt to Obtain Warranty Coverage Is
Denied?
If your first attempt to receive emissions warranty coverage is denied, you should do the following:
1. Ask for a detailed explanation, in writing as to why emissions warranty coverage was
denied; and
2. Ask for the name(s) of the person(s) involved in the decision to deny coverage, including
anyone from the manufacturer's regional or zone office; and
3. Ask for the name(s) of the person(s) with the manufacturer you should contact to appeal
the denial of coverage under the emissions warranty,
4. Contact and, if necessary, write to the person mentioned above requesting coverage and
giving the basis for your request. Repeat and continue the appeal process until you are
satisfied or have exhausted all means of appeal,
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What If the Dealer Claims That My Vehicle Can Pass the I/M Test With-
out Repair?
The law does not require that you fail every I/M test in order to trigger the warranty. If a valid
test shows that you have an emission problem or there is a defective part, you should get it fixed,
rf\ while your vehicle is still within the warranty period. Otherwise, you might fail a future test
because of the same problem and have to pay for the repair yourself. If you doubt your original
test results or the dealer's results or diagnosis, you can always get another opinion from another
dealer or your I/M program.
How Can Maintenance Affect My Emission Warranty Coverage?
Performance and the cost of scheduled maintenance are your responsibility. You may either
perform scheduled maintenance yourself or have a qualified repair facility perform it for you.
If a part fails as a direct result of your vehicle not being properly maintained or being used in a
manner inconsistent with the manufacturer's recommendations, or a part fails as a result of the
vehicle being involved in an accident, the manufacturer may not be required to repair or replace
the failed part under warranty. For example, failure to replace the spark plugs at the intervals
specified in the maintenance schedule can lead to misfiring and eventual damage to your cata-
lytic converter - a very expensive part to replace. If the maintenance is not performed properly
as recommended, the manufacturer may deny warranty coverage.
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To ensure maximum air pollution reduction from the emission control system, as well as to ensure
continued warranty coverage, better gas mileage and performance, and longer vehicle life, you
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should have all maintenance performed as recommended by the manufacturer's schedule. A
list of scheduled maintenance for your vehicle can be found in the owner's manual or warranty
booklet.
Do I Have to Show Any Maintenance Receipts Before I Can Make an
Emissions Warranty Claim?
No. Proof of maintenance is not required in order to obtain coverage under the emissions war-
ranty if an emission control or emission related component, or a specified major emission con
trol component, is found to be defective in materials or workmanship. However, when it is likely
that the lack of proper maintenance has caused the particular part to fail, you may be asked to
show that scheduled maintenance was performed.
If you perform scheduled maintenance yourself, you should keep a detailed log of work per
formed and any receipts for parts purchased to perform the maintenance. In some instances, you
may be asked to qualify your ability to perform such maintenance. Vehicles should always be
maintained according to manufacturers' specifications,
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Are Dealers the Only Persons Allowed to Perform Scheduled Mainte-
nance Recommended by the Manufacturer?
No. Scheduled maintenance may be performed by anyone who has the knowledge and ability
to perform the maintenance and repair. You may even maintain the vehicle yourself, as long as
rf\ the maintenance is performed according to the manufacturer's instructions provided with the
vehicle.
For your protection, before taking your vehicle to a repair facility to have any maintenance
performed, check your maintenance booklet and make a list of the scheduled maintenance to be
performed at that time. We suggest that you present this list to your auto technician as opposed
to merely asking for a "tune-up" or a "12,000 miles servicing." Your receipt should list all the
maintenance performed and should be kept for your records.
If you maintain the vehicle yourself, you should keep receipts for parts and a maintenance log to
verify your work.
If I Need Replacement Parts, Must I Use the Vehicle Manufacturer's
Parts Only?
No. A manufacturer cannot require the use of any specific brand of parts in the maintenance of
your vehicle. However, the manufacturer can require you to use parts that are of equal quality to
the original parts.
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Agency (EPA) is authorized to investigate the failure of manufacturers to comply with the
terms of these warranties. If you have followed the manufacturer's procedures (including those
for appeals) for making a warranty claim as set out in your owner's manual or warranty booklet,
have received a written denial and you are not satisfied with the manufacturer's determination,
you may submit a letter to EPA at the following address. It should provide details of the situa-
tion including the basis for the claim, a copy of the written denial, copies of your letters to the
manufacturers, and copies of any receipts for emission control parts and repairs you have paid
for:
U.S. Environmental Protection Agency
Office of Transportation and Air Quality
Compliance Division, Light'Duty Vehicle Group
Attn: Warranty Complaints
2000 Traverwood Drive
Ann Arbor, MI 48105
Other sources of assistance may be your local or State consumer protection agency or office of
the Attorney General. You also should be aware that low-cost or free legal assistance may be
available through a local legal aid office, the State bar association, or a law school clinic staffed
by law students,
In Summary
If an emission control or emission related part, or a specified major emission control component
C/J is defective, or if your vehicle fails an I/M test, and your vehicle is within the time and mileage
limitations for emissions warranty coverage:
• Present a warranty claim to an authorized warranty representative,
^^T • If your warranty claim is denied:
• Ask for the reason for denial, in writing,
• Follow the appeal procedures in your owner's manual,
• If you are not satisfied with the manufacturer's decision:
• Contact the EPA, which will investigate the denial of a valid emissions
warranty complaint,
• Keep This With Your Vehicle for Future Reference,
For More Information
For further information on emissions warranties, please contact us at:
U.S. Environmental Protection Agency
Office of Transportation and Air Quality
Compliance Division, Light-Duty Vehicle Group
Attn: Warranty Complaints
2000 Traverwood Drive
Ann Arbor, MI 48105
Email: complianceinfo@epa.gov
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