The 7 Most Common Mistakes That Can Void Your Electric Vehicle Warranty

Electric vehicles (EVs) have robust warranties to protect your investment and ensure trouble-free operation. However, some specific actions or oversights can inadvertently void your warranty. To help EV owners avoid costly mistakes, we’ve outlined the most common factors that could lead to warranty denial.

1. Unauthorized Repairs or Modifications

Repairs or modifications that cause damage can lead to a denied claim, especially on high voltage parts such as the battery, motor and inverter, which should only be serviced by trained technicians. In the US, though, the Magnuson-Moss Warranty Act means a manufacturer cannot void your warranty simply because you used an independent shop or aftermarket parts. To deny a claim, it has to show that the part or the work actually caused the failure.

Pro Tip: Read your warranty booklet before modifying the car, and leave high voltage work to a qualified technician.

2. Neglecting Scheduled Maintenance

EVs require less frequent maintenance than conventional vehicles, but skipping scheduled check-ups can still lead to warranty issues. Regular inspections, battery health checks, coolant system maintenance, and software updates are necessary to keep your warranty valid.

Pro Tip: Keep detailed records and receipts for every service, whether the work was done at a dealer, an independent shop or in your own garage.

3. Improper Charging Habits

Using incompatible or unauthorized chargers can damage your EV’s battery and void the battery warranty. For instance, consistently fast-charging your EV when not recommended or using substandard equipment can deteriorate battery health prematurely.

Pro Tip: Follow the manufacturer’s recommended charging guidelines and always use certified or approved charging equipment.

4. Accidental or Environmental Damage

Warranty coverage generally excludes damage caused by accidents, collisions, and extreme weather conditions such as flooding or fires. While insurance usually covers these incidents, failure to properly repair such damage using authorized channels can void remaining warranty coverage.

Pro Tip: Report accidents immediately to your insurer and dealership to ensure damage is properly documented and repaired.

5. Software Tampering or Unauthorized Diagnostics

EVs rely heavily on specialized software to manage and monitor system performance. Attempting to alter the vehicle’s software or using unauthorized diagnostic tools may compromise safety features and void your warranty.

Pro Tip: Always use authorized software updates and diagnostic services provided by your EV manufacturer or authorized technicians.

6. Improper Towing, Storage and Exposure

Improper long-term storage or prolonged exposure to extreme temperatures can degrade battery performance, leading to warranty issues. Manufacturers usually specify optimal storage conditions to maintain battery health.

Pro Tip: Store your EV in temperature-controlled environments when possible, and follow manufacturer guidelines if storing the vehicle for extended periods of time.

7. Ignoring Manufacturer Recalls

Ignoring a recall does not automatically void your warranty, and recall repairs are free whether or not the car is still under warranty. The risk is that damage caused by an unrepaired recall defect may be disputed, so it makes sense to get recall work done promptly.

Pro Tip: Regularly check for recall notices and promptly schedule recommended service visits.

Conclusion

Your EV warranty is a valuable safety net designed to protect your investment, but specific conditions must be met. You can ensure your warranty remains intact by avoiding unauthorized modifications, maintaining proper charging habits, keeping up with scheduled maintenance, addressing accidental damage through the proper channels, and adhering to recall notices.

Explore the extensive library of EV care guides available here on YOUCANIC for additional support and maintenance resources.

EV Warranties by Make

Here are typical EV battery and powertrain warranty coverages (by year and mileage) for popular EV models currently available in the U.S.:

1. Tesla

• Battery & Drive Unit Warranty:
  • Model S/X: 8 years or 150,000 miles (minimum 70% retention for some models)
  • Model 3/Y Long Range & Performance: 8 years or 120,000 miles (minimum 70% retention)
  • Model 3/Y Standard Range: 8 years or 100,000 miles (minimum 70% retention)

2. Chevrolet

• Bolt EV / Bolt EUV:
  • Battery Warranty: 8 years or 100,000 miles (minimum 60% retention)
  • Electric Powertrain: 8 years or 100,000 miles

3. Nissan

• Leaf:
  • Battery Warranty: 8 years or 100,000 miles against excessive capacity loss (below approximately 66.25% retention)

4. Hyundai

• Ioniq 5, Kona Electric:
  • Battery Warranty: 10 years or 100,000 miles
  • Electric Powertrain Warranty: 10 years or 100,000 miles

5. Kia

• EV6, Niro EV:
  • Battery Warranty: 10 years or 100,000 miles
  • Electric Powertrain Warranty: 10 years or 100,000 miles

6. Volkswagen

• ID.4:
  • Battery Warranty: 8 years or 100,000 miles (minimum 70% retention)

7. Ford

• Mustang Mach-E / F-150 Lightning:
  • Battery Warranty: 8 years or 100,000 miles (minimum 70% retention)
  • Electric Powertrain Warranty: 8 years or 100,000 miles

8. BMW

• BMW i4, iX, i7:
  • Battery Warranty: 8 years or 100,000 miles (minimum 70% retention)

9. Audi

• Audi e-tron / Q4 e-tron:
  • Battery Warranty: 8 years or 100,000 miles (minimum 70% retention)

10. Mercedes-Benz

• EQB, EQE, EQS:
  • Battery Warranty: 10 years or 155,000 miles (minimum 70% retention)

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