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: 7,565 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: Blue
• CO2: 20 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2025 BYD Seal U Boost is advertised with 7,565 miles on the clock. The dealer is asking £22,995, which is £1,356 below the AskCar estimate of £24,351. To work out the AskCar estimate, we analyse UK dealer adverts for 850 BYD Seal U cars across different ages and specifications. The dealer may accept less. This car has been on sale for at least 83 days, and its asking price is down £2,500. The seller is Pentagon Warrington, based in Warrington. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,356 (5%) under the AskCar estimate of £24,351.

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 850 priced BYD Seal U adverts across different ages and specifications, as of 2 November 2026.

A 2025 BYD Seal U with the 1.5 plug-in hybrid engine is typically advertised at £24,700: the median of the 484 for sale on AskCar, as of 2 November 2026.

Time on sale

The dealer may accept less. This 2025 BYD Seal U has been on sale for at least 83 days, and its asking price has been cut by £2,500. About half of 2025 BYD Seal U cars are gone from sale within a month of being advertised: 588 of the 1,146 first advertised between 8 July 2026 and 29 September 2026.

Price history

AskCar first saw this advert on 11 August 2026 at £25,495. Its asking price is now £22,995, £2,500 less. The latest price cut was seen on 30 October 2026.

Price changes recorded:

• 11 August 2026: £25,495
• 2 September 2026: £24,395
• 9 September 2026: £24,195
• 23 September 2026: £23,995
• 30 September 2026: £23,495
• 16 October 2026: £23,395
• 22 October 2026: £23,495
• 30 October 2026: £22,995

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 700 miles lower than the median mileage of a 2025 BYD Seal U on AskCar.

Similar cars

97 other 2025 BYD Seal U Boost 1.5 plug-in hybrid automatic SUVs are for sale at UK dealers, from £14,999 to £33,995, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 7,492 miles. Price: £24,499, £1,504 more than this car. Dealer: Hartwell Reading in Reading. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-61b38461d10c
• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 7,429 miles. Price: £23,600, £605 more than this car. Dealer: Marshall BYD Canterbury in Canterbury. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-d9f08de2e254
• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 7,369 miles. Price: £24,019, £1,024 more than this car. Dealer: Vertu BYD Gloucester in Gloucester. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-20dc76ea5259

• The nearest: 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white, 22 miles from this car. Mileage: 1,645 miles. Price: £24,490, £1,495 more than this car. Dealer: Swansway Garages BYD Crewe in Crewe. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-48ab8d35d356