BYD has strengthened the high-voltage battery warranty across its electric vehicle (EV) and plug-in hybrid (PHEV) range, extending cover to eight years or 250,000 kilometres (155,350 miles), whichever comes first. The change is designed to offer greater reassurance for both private and business users, particularly those running higher annual mileages.
While BYD’s battery warranty remains set at eight years and is still linked to a minimum 70% state of health, the key update is the mileage limit, which has now been increased to 155,350 miles, the imperial equivalent of roughly 250,000 km. This higher mileage cap is significant for fleet and salary sacrifice drivers, where vehicles can accumulate mileage far more quickly than typical private-use cars.
BYD says the updated terms respond directly to common concerns around long-term battery reliability and predictable operating costs. A stronger battery warranty can also support used values by making the ownership proposition more attractive to second and third owners, who often focus on remaining battery cover.
A particularly important element of the announcement is that the new battery warranty terms are retrospective. In practical terms, that means the improved eight-year or 250,000 km limit is not restricted to newly delivered vehicles. It is also being applied to previously sold BYD models already on the road, meaning existing owners benefit automatically from the improved mileage coverage without needing to take further action.
BYD’s press office has confirmed that the change was formally communicated at the launch of the Atto 2 DM-i in November, rather than through a standalone announcement at the time. The revised figure looks unusual in miles but is the 250k km equivalent.
Rob Van Weyenbergh, Head of Aftersales at BYD Belux, said the aim is to give customers confidence in the long-term ownership proposition, particularly for professional users. He added that a strong battery warranty helps underline BYD’s battery technology credentials while also supporting mobility and investment security for owners.
BYD also highlights that the revised mileage limit exceeds what it describes as a typical market benchmark of around eight years and 150,000 km or 93,000 miles for high-voltage batteries in EV and PHEV models. For business users, that additional mileage headroom could make a meaningful difference over a typical fleet lifecycle, particularly in roles involving heavier annual use.
The extended battery warranty sits within a wider warranty package across BYD’s range, which BYD summarises as follows: a general vehicle warranty of six years or 150,000 km, powertrain cover up to eight years or 150,000 km, and a 12-year bodywork warranty against rusting from the inside, with no mileage limit.
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