2025 BYD Seal U 1.5 Boost

Overview

• Make: BYD
• Model: Seal U
• Trim: Boost
• Version: 1.5 18.3kWh Boost CVT FWD Euro 6 (s/s) 5dr (214 bhp)
• Year: 2025
• Mileage: 10,724 miles
• Fuel: Plug-in hybrid (petrol)
• Body: SUV, 5 doors, 5 seats
• Engine: 1.5 litres, 214 bhp
• Gearbox: Automatic (CVT)
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 20 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2025 BYD Seal U Boost has covered 10,724 miles, around 2,600 more miles than is typical for its age. The dealer is asking £22,477, which is £1,022 below the AskCar estimate of £23,499. To work out the AskCar estimate, we analyse UK dealer adverts for 853 BYD Seal U cars across different ages and specifications. It first appeared in our advert records today. The seller is D. M. Keith, based in Leeds. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,022 (4%) under the AskCar estimate of £23,499.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 853 priced BYD Seal U adverts across different ages and specifications, as of 4 November 2026.

A 2025 BYD Seal U with the 1.5 plug-in hybrid engine is typically advertised at £24,600: the median of the 497 for sale on AskCar, as of 4 November 2026.

Time on sale

AskCar first saw this 2025 BYD Seal U advertised today. About half of 2025 BYD Seal U cars are gone from sale within a month of being advertised: 605 of the 1,172 first advertised between 8 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 4 November 2026 at £22,477. Its asking price has not changed.

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 2,600 miles higher than the median mileage of a 2025 BYD Seal U on AskCar.

Similar cars

102 other 2025 BYD Seal U Boost 1.5 plug-in hybrid automatic SUVs are for sale at UK dealers, from £22,440 to £33,995, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white. Mileage: 10,721 miles. Price: £23,040, £563 more than this car. Dealer: D. M. Keith Cupra York in York. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-1e3b9c14a18f
• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 10,579 miles. Price: £23,532, £1,055 more than this car. Dealer: D M Keith Byd Keighley in Keighley. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-9d0dc3c97b1d
• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 11,083 miles. Price: £22,799, £322 more than this car. Dealer: D. M. Keith in Leeds. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-49ea02695cd5