PCP Price of Brand New vehicles only, this includes our retailer discount and BYD additional OEM support. ???? Warranty & Peace of Mind. Comprehensive Manufacturer Warranty; New BYD vehicles in the UK are backed by a 6-year/93,000 mile manufacturer’s warranty on the car’s basic components and electrical systems, giving long-term reassurance on ownership. Extended Battery & Drive Unit Warranty. The high-voltage lithium battery and key drivetrain components are covered for **up to 8 years or around **155,000 miles, whichever comes first. This battery warranty typically guarantees that the battery will retain at least 70 % of its original capacity over the warranty period. BYD also offers a 12-year bodywork anti-corrosion warranty against perforation due to rust, helping protect long-term structural integrity.