A new car manufacturer’s warranty does not cover normal wear-and-tear items, routine maintenance, accident damage, non-OEM modifications, or damage from misuse or neglect. You are financially responsible for repairing or replacing these excluded components and addressing related failures.
Wear-and-tear items are the most common exclusions. These are parts designed to deteriorate with normal use and are considered a standard ownership cost. This includes brake pads and rotors, clutch discs, wiper blades, light bulbs, and tires. The warranty covers defects in materials or workmanship, not the natural consumption of these parts. For instance, a tire with a manufacturing flaw causing a bubble would be covered, but typical tread wear or a puncture from road debris is your responsibility. Industry contract analyses show exclusions for wear items approach 100% across all major automakers.
Scheduled maintenance is also explicitly excluded. This encompasses oil and filter changes, air filter replacements, cabin air filters, brake fluid flushes, coolant exchanges, and spark plug replacements. While some manufacturers offer complimentary maintenance plans for the first few years, these are separate programs, not the warranty itself. Neglecting this maintenance can even void your warranty coverage for related systems, such as engine damage from old oil.
Damage from external events or accidents falls outside the warranty's scope. This includes collisions, vandalism, fire, hail, flood, or animal strikes. Repairs for these issues are handled by your auto insurance policy. Similarly, damage from environmental factors like tree sap, acid rain, or industrial fallout is typically not covered, as it’s not a failure of the vehicle itself.
Any alterations or aftermarket parts can jeopardize coverage. Installing non-original equipment (like performance chips, lift kits, or certain audio systems) that directly causes a failure gives the manufacturer grounds to deny a claim. For example, an aftermarket cold air intake that causes a check engine light could lead to a denied powertrain claim. Using parts not meeting OEM specifications for fluids or filters can also create issues.
Finally, damage from misuse, negligence, or lack of care is not covered. This includes off-roading a non-off-road vehicle, using the car for commercial racing, failing to address recalls, or continuing to drive with obvious warning lights illuminated. Warranty administrators require proof the failure was due to a defect, not owner-induced damage.
The table below summarizes common exclusions:
| Non-Covered Category | Typical Items/Examples | Reason for Exclusion & Owner Responsibility |
|---|
| Normal Wear & Tear | Brake pads/rotors, tires, wiper blades, clutch, belts, hoses | Expected consumption; owner pays for replacement. |
| Routine Maintenance | Engine oil, filters, fluids, spark plugs, battery | Owner’s maintenance cost, per the owner’s manual schedule. |
| Accident/External Damage | Dents, paint scratches, broken glass from impact | Covered by auto insurance, not manufacturer defect. |
| Aftermarket Parts/Mods | Lift kits, performance tuners, non-OEM lighting | Can void warranty if deemed cause of failure; owner assumes risk. |
| Misuse/Neglect | Damage from overloading, racing, water submersion | Failure results from operation outside specified parameters. |
Always review your specific warranty document. Terms can vary, with some automakers offering longer coverage for certain wear items like brake pads. The core principle remains: the warranty is for unexpected breakdowns due to factory defects, not for the predictable costs of operating and maintaining a vehicle.
