BYD Warranty: UK vs Australia, Side by Side
Short answer: a new BYD has a 6-year vehicle warranty and an 8-year high-voltage battery warranty in both the UK and Australia. The distance limits differ — 155,000 miles (250,000 km) for the battery in the UK since January 2026, 160,000 km in Australia — and in both markets the battery is guaranteed to keep at least 70% of its original health. Here are the two side by side, plus what changes for used and imported cars.
| Cover | United Kingdom | Australia |
|---|---|---|
| Vehicle | 6 years / 93,750 miles (150,000 km) | 6 years / 150,000 km, bumper to bumper |
| High-voltage battery | 8 years / 155,000 miles (250,000 km), at least 70% state of health | 8 years / 160,000 km, at least 70% state of health |
| Drive unit (motor and controller) | 8 years / 93,750 miles (150,000 km) | 8 years / 160,000 km |
| Body anti-perforation | 12 years, unlimited mileage | Within the 6-year vehicle warranty |
| Roadside assistance | Included for 6 years | 12 months from delivery, then renewable |
| Cars sold earlier | Battery extension also applied to existing cars (January 2026) | Terms backdated to cars delivered since August 2022 |
Cars sold through the official BYD network only; commercial and fleet vehicles can have different terms. Some older BYD UK documents still show 125,000 miles for the battery — the higher limit applies from January 2026. Confirm the cover on a specific car with a BYD dealer using its VIN.
BYD warranty in the UK
Every new BYD sold in the UK gets a 6-year / 93,750-mile vehicle warranty covering mechanical and electrical parts, an 8-year / 93,750-mile warranty on the drive unit and 12 years of anti-perforation cover on the body. In January 2026 BYD raised the battery limit for the UK and Europe to 8 years or 155,000 miles (250,000 km), with at least 70% state of health guaranteed, and applied it to existing cars as well as new ones. The same terms are listed across the current range — Dolphin Surf, Dolphin, Atto 2, Atto 3, Seal, Seal U DM-i, Sealion 7, Seal 6 DM-i and Seal 6 DM-i Touring — including the plug-in hybrids.
BYD warranty in Australia
In April 2025 BYD simplified its Australian warranty into one 6-year / 150,000 km bumper-to-bumper cover, folding in parts that used to have shorter terms, such as touchscreens, lights and shock absorbers. The high-voltage battery and the drive unit are covered for 8 years / 160,000 km. The new terms were backdated to every car delivered since the Atto 3 launch in August 2022, although owners who had already paid for repairs were not reimbursed. BYD took over Australian distribution from EVDirect in July 2025; existing warranties carry on from the original delivery date.
What the 70% battery-health guarantee means
Every lithium battery loses some capacity with age. BYD guarantees the pack keeps at least 70% of its original state of health (SOH) within the warranty period — if it falls below that, it is a warranty claim. Gradual loss above 70% is treated as normal ageing. SOH is read with a dealer diagnostic tool, so ask for a battery health report before you buy a used BYD.
Does the BYD warranty transfer to a new owner?
In most cases, yes. BYD UK says the warranty transfers to the new owner when the car is sold, and in Australia the remaining cover also stays with the car. The clock runs from the original delivery date — not from the day you buy it — so that start date decides how much warranty a used BYD really has left. Ask a BYD dealer to look it up by VIN, and ask the seller for the service record, because missed servicing can void the cover.
What voids the BYD warranty and what isn't covered
The usual exclusions apply in both countries: wear items such as tyres, brake pads and wiper blades; accident, hail and flood damage; misuse, including overloading and racing; non-approved modifications or non-genuine parts and fluids; and faults caused by missed servicing or ignored warning lights. In Australia BYD dropped the requirement to service at a BYD dealer in 2025, but the car must still be serviced on schedule — keep every invoice.
Grey imports and privately imported BYDs
A BYD brought into the UK or Australia outside the official network — a private import from China, a grey-market car or one bought at auction overseas — is usually not covered by the local distributor, and Chinese-market cars carry different warranty terms. Before you buy one, decode the VIN to confirm where and when it was built, and ask a local BYD dealer whether the car is in their warranty system. If it isn't, assume you will pay for repairs yourself.
How to check the warranty on a specific BYD
Find the 17-character VIN at the base of the windscreen, on the driver's door pillar or on the registration papers. Decode it to confirm the model and build date, then give it to a BYD dealer to confirm the warranty start date, the cover remaining and any open recalls. On a used car, also ask for the service history and a battery health report.
BYD warranty by model
The terms above apply across the range, but each model has its own details — battery sizes, plug-in hybrid versions, recalls and naming differences between markets. Model-by-model guides:
FAQ
How long is the BYD warranty?
6 years on the vehicle and 8 years on the high-voltage battery in both the UK and Australia. The vehicle limit is 93,750 miles (150,000 km) in the UK and 150,000 km in Australia; the battery limit is 155,000 miles (250,000 km) in the UK and 160,000 km in Australia, whichever comes first.
Is the BYD battery warranty 8 years?
Yes. BYD guarantees at least 70% state of health for 8 years — up to 155,000 miles (250,000 km) in the UK and 160,000 km in Australia.
Does the BYD warranty transfer to a second owner?
In most cases, yes. BYD UK says the warranty transfers to the new owner, and the remaining cover is counted from the car's original delivery date. A BYD dealer can confirm the start date from the VIN.
Does the BYD warranty cover battery degradation?
Only if the battery falls below 70% state of health within the warranty period. Normal, gradual capacity loss above that level is not covered.
What voids the BYD warranty?
Missing scheduled services or not keeping the records, non-approved modifications, non-genuine parts or fluids, misuse such as overloading or racing, and ignoring warning lights. Accident, hail and flood damage and wear items such as tyres and brake pads aren't covered either.
How do I check if my BYD battery is still under warranty?
Give the VIN to a BYD dealer. They can confirm the original delivery date — when the 8-year battery cover started — and read the battery's state of health. A fall below 70% health within 8 years and the distance limit (155,000 miles in the UK, 160,000 km in Australia) is a warranty claim.
Do I have to service my BYD at a BYD dealer?
In Australia, no — since 2025 you can use another workshop as long as the car is serviced on schedule and you keep the invoices. In the UK, follow BYD's service schedule with approved parts and fluids and keep the records; check with your dealer before using an independent garage.
Is a grey-import BYD covered by warranty?
Usually not by the local distributor. Check the VIN with a local BYD dealer before buying, and budget for repairs if the car isn't in their system.
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