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: 10,721 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: White
• CO2: 20 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 10,721 miles on the clock, this 2025 BYD Seal U Boost has done roughly 2,700 more miles than a typical 2025 BYD Seal U. Priced at £23,222, it is advertised £279 below the AskCar estimate of £23,501. To work out the AskCar estimate, we analyse UK dealer adverts for 859 BYD Seal U cars across different ages and specifications. The dealer may accept less. This car has been on sale for at least 98 days. The seller is D. M. Keith Cupra York, based in York. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £279 (1%) under the AskCar estimate of £23,501.

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 859 priced BYD Seal U adverts across different ages and specifications, as of 5 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 495 for sale on AskCar, as of 5 November 2026.

Time on sale

The dealer may accept less. This 2025 BYD Seal U has been on sale for at least 98 days. About half of 2025 BYD Seal U cars are gone from sale within a month of being advertised: 611 of the 1,181 first advertised between 8 July 2026 and 2 October 2026.

Price history

AskCar first saw this advert on 30 July 2026 at £24,046. Its asking price is now £23,222, £824 less.

Price changes recorded:

• 31 July 2026: £24,046
• 2 August 2026: £24,027
• 3 August 2026: £24,021
• 4 August 2026: £24,024
• 9 August 2026: £23,962
• 10 August 2026: £23,950
• 12 August 2026: £23,928
• 13 August 2026: £23,897
• 14 August 2026: £23,889
• 15 August 2026: £23,868
• 18 August 2026: £23,847
• 19 August 2026: £23,842
• 20 August 2026: £23,800
• 21 August 2026: £23,790
• 3 September 2026: £23,290
• 4 September 2026: £23,590
• 8 September 2026: £23,706
• 17 September 2026: £23,290
• 24 September 2026: £22,990
• 7 October 2026: £22,790
• 8 October 2026: £23,227
• 9 October 2026: £23,214
• 16 October 2026: £23,862
• 17 October 2026: £23,336
• 25 October 2026: £23,604
• 27 October 2026: £23,348
• 28 October 2026: £23,569
• 29 October 2026: £23,338
• 30 October 2026: £23,223
• 31 October 2026: £23,118
• 3 November 2026: £23,040
• 5 November 2026: £23,222

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 2,700 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 5 November 2026.

The 3 closest to this car in mileage:

• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 10,724 miles. Price: £22,477, £745 less than this car. Dealer: D. M. Keith in Leeds. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-c204fbdd6124
• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 10,579 miles. Price: £23,532, £310 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, £423 less than this car. Dealer: D. M. Keith in Leeds. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-49ea02695cd5

• The nearest: 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey, 33 miles from this car. Mileage: 3,745 miles. Price: £23,599, £377 more than this car. Dealer: D. M. Keith BYD Hull in Kingston upon Hull. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-2878bc989733