Australian EV battery warranty comparison
EV battery warranty comparison Australia: Tesla, BYD, Kia, Hyundai and MG
Most new EVs sold in Australia include a separate high-voltage battery warranty, but the headline number does not tell the whole story. Time and kilometre limits, capacity-retention thresholds, model year, delivery date, exclusions and warranty transfer rules can all change the protection that actually applies.
Current snapshot
Major Australian EV battery warranties commonly sit around seven to eight years
As at September 2026, Tesla Australia lists eight-year Battery and Drive Unit coverage for current Model 3 and Model Y variants, with kilometre limits that vary by variant and a minimum 70% battery-capacity retention condition. BYD Australia lists eight years or 160,000 km for its traction battery and its current warranty document states a 70% capacity-retention guarantee.
Kia Australia states that its high-voltage EV battery capacity warranty is seven years or 150,000 km for pre-model-year-2027 vehicles and eight years or 160,000 km for model-year 2027 and later vehicles, with a 70% capacity threshold. Hyundai lists an eight-year/160,000 km high-voltage lithium-ion battery warranty. MG's current warranty information lists seven years/150,000 km for MG high-voltage batteries, subject to the applicable warranty terms.
- Tesla Model 3 / Model Y: 8 years; kilometre limit varies by variant; 70% minimum retention on listed current variants
- BYD traction battery: 8 years / 160,000 km; current warranty document states at least 70% capacity retention
- Kia HV EV battery: 7 years / 150,000 km for pre-MY27; 8 years / 160,000 km for MY27+; 70% threshold
- Hyundai high-voltage lithium-ion battery: 8 years / 160,000 km
- MG EV/Hybrid high-voltage battery: 7 years / 150,000 km under the current MG warranty page
Capacity retention
A battery warranty may cover defects and capacity loss differently
A battery can still operate normally while holding less energy than when new. Some manufacturers therefore publish a minimum capacity-retention threshold in addition to defect coverage.
A 70% threshold does not mean the manufacturer expects the battery to fall to 70%. It is a warranty condition that helps define when capacity loss may qualify for a remedy, subject to the full warranty terms and testing process.
Kilometres and dates
Model year and delivery date can change the applicable warranty
Do not apply today's warranty table to every used EV of the same badge. Tesla notes that coverage varies by delivery date, model and trim. Kia has different high-voltage battery capacity periods for pre-model-year-2027 and later vehicles.
When buying used, obtain the warranty document that applies to the specific VIN or delivery period and confirm the remaining time and kilometres with the manufacturer or authorised network.
Used EVs
Transferability can be as important as the headline warranty period
A long battery warranty is more useful to a second owner if the remaining coverage transfers with the vehicle and the warranty conditions have been maintained. Manufacturer rules differ, so transfer should be verified rather than assumed.
Keep service records, warranty repairs, recall work and battery-health documentation with the vehicle. Good records make it easier for both the manufacturer and a future buyer to understand the car's history.
Warranty vs insurance
Battery warranty and motor insurance solve different problems
A manufacturer warranty generally addresses defects and specified battery-performance conditions. Motor insurance responds to covered events under the insurance policy. Neither should be treated as a substitute for the other.
If an EV battery is damaged in a collision, flood or other event, the relevant insurance policy terms determine whether the resulting damage is covered. Gradual degradation or a manufacturing defect may instead fall within warranty, maintenance or consumer-law considerations.
Consumer rights
Australian Consumer Law can exist alongside a manufacturer's written warranty
The ACCC explains that consumer guarantees apply automatically and are separate from voluntary warranties offered by manufacturers. The existence or expiry of a written warranty does not by itself determine whether a consumer has rights under the Australian Consumer Law.
Whether a consumer guarantee provides a remedy depends on the circumstances. For a particular battery problem, keep diagnostic evidence and communicate with the seller or manufacturer using the facts of the issue rather than relying only on the headline warranty period.
Next steps
Continue with the next relevant EV question
These links move you from this topic into the next logical piece of EV research.
EV battery warranty database
Search Australian manufacturer battery warranty terms and source links.
→Used EV battery health checklistTrack the battery evidence worth collecting before buying a used EV.
→EV battery replacement costUnderstand the difference between degradation, repair, warranty and full-pack replacement.
→Common questions
Frequently asked questions
Which EV has the longest battery warranty in Australia?
Many major brands currently provide around eight years of high-voltage battery coverage, but kilometre limits and capacity conditions differ. Compare the warranty for the exact model year and variant rather than ranking brands on years alone.
What does 70% battery capacity retention mean?
It is a warranty threshold used by some manufacturers. If tested usable capacity falls below the stated threshold within the warranty period and the claim meets the warranty conditions, a remedy may apply under that manufacturer's terms.
Does an EV battery warranty transfer to the next owner?
Transfer rules differ by manufacturer and warranty. A used-EV buyer should confirm the remaining coverage for the specific vehicle rather than assuming it transfers automatically.
Is battery degradation covered by car insurance?
Gradual degradation is different from sudden accidental damage and should not be assumed to be an insured event. Check the insurance policy, manufacturer warranty and any applicable consumer-law rights.
Keep learning
Related EVITAL guides
Continue with closely related Australian EV information from the same topic cluster.
Next step
Check the manufacturer warranty that applies to the EV you are researching.
Use EVITAL's Australian warranty database as a research starting point, then verify the exact model, model year and warranty terms with the manufacturer.