BYD has extended its Blade Battery warranty in the European Economic Area (EEA) to eight years or 250,000 km, whichever comes first, according to the company’s January 2026 announcement. BYD says the revised cover applies both to new purchases and to existing owners. The stated battery condition is a minimum 70% state of health under the extended EEA cover.
This is not a single Europe-wide figure for every market. BYD’s UK warranty page lists battery cover as eight years or 200,000 km (125,000 miles). The EEA announcement and the UK policy should therefore be treated as separate regional documents, rather than converting the 250,000 km figure into a UK entitlement.
Which warranty limit applies to the vehicle
The first check is the market in which the vehicle is covered. BYD’s 250,000 km statement is expressly described as EEA Blade Battery cover. The UK document gives a different distance limit: 200,000 km, equivalent to 125,000 miles. These figures are warranty limits, not range claims, battery-life predictions or a promise that a battery will reach a particular degradation level at a specific mileage.
Owners should also distinguish the battery warranty from other parts of the vehicle warranty. The supplied BYD material supports the revised Blade Battery duration, mileage limit and 70% state-of-health condition; it does not establish that every vehicle component receives the same coverage or that every European market uses identical contractual wording.
How to verify an existing owner’s position
BYD says the revised EEA cover applies to existing owners, so an owner does not need to assume that the announcement is limited to cars purchased after the change. However, the available announcement does not provide a vehicle-by-vehicle eligibility tool, a revised certificate or a detailed claim procedure. It also does not state how the 70% state-of-health measurement is performed or which conditions apply when a claim is assessed.
- Identify the applicable market. Check whether the vehicle is covered under the EEA policy or the separate UK warranty wording. Do not use the UK 200,000 km limit to describe an EEA vehicle, or the EEA 250,000 km statement to assume UK coverage.
- Keep the vehicle’s mileage and ownership records available. The published limits are eight years or a specified distance, and the revised EEA cover is stated to include existing owners.
- Ask a local BYD dealer for the vehicle-specific interpretation. BYD Europe directs owners to a local dealer for detailed warranty information. This is the appropriate route to confirm how the updated cover is recorded for an individual vehicle and how a battery state-of-health concern would be assessed.
The 70% threshold is the central technical condition published with the EEA extension. It should not be read as a guarantee that the vehicle will display a particular battery-health percentage in its owner interface, because the supplied material does not specify the measurement method. Nor does the announcement say that a battery below the threshold is automatically replaced without an inspection or other warranty checks.
What to confirm before making a warranty claim
Before relying on the extended cover, ask the local dealer to confirm three points in writing where possible: the vehicle’s applicable regional policy, whether its mileage and age fall within the eight-year and distance limits, and how BYD will verify the 70% state-of-health requirement. UK owners should ask specifically about the 200,000 km (125,000-mile) limit shown on BYD UK’s warranty page, while EEA owners should refer to the 250,000 km announcement and local dealer guidance.
The verified next step is therefore regional confirmation, not a battery-health estimate: contact a local BYD dealer and request the detailed warranty information for the vehicle. For EEA owners, BYD’s stated revised condition is eight years or 250,000 km with a minimum 70% state of health; for UK owners, the published distance limit is eight years or 200,000 km (125,000 miles).
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