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: 2,620 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

This 2025 BYD Seal U Boost is advertised with 2,620 miles, approximately 5,500 below the typical mileage for its age. The dealer is asking £24,934, which is £215 below the AskCar estimate of £25,149. To work out the AskCar estimate, we analyse UK dealer adverts for 853 BYD Seal U cars across different ages and specifications. We first saw this car advertised 40 days ago. Its asking price has since fallen by £566. The seller is D M Keith Byd Keighley, based in Keighley. 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: £215 (under 1%) under the AskCar estimate of £25,149.

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

This 2025 BYD Seal U has been on sale for at least 40 days.

Price history

AskCar first saw this advert on 25 September 2026 at £25,500. Its asking price is now £24,934, £566 less. The latest price cut was seen on 21 October 2026.

Price changes recorded:

• 25 September 2026: £25,500
• 29 September 2026: £25,431
• 30 September 2026: £25,499
• 11 October 2026: £25,461
• 12 October 2026: £25,449
• 13 October 2026: £25,424
• 15 October 2026: £25,392
• 17 October 2026: £24,994
• 21 October 2026: £24,934

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 5,500 miles lower 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, blue. Mileage: 2,100 miles. Price: £23,475, £1,459 less than this car. Dealer: Lookers BYD Sheffield in Sheffield. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-73d59b5f98f7
• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 3,321 miles. Price: £23,500, £1,434 less than this car. Dealer: Sytner Select Swindon in Swindon. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-4c3690ff48ea
• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 1,893 miles. Price: £25,499, £565 more than this car. Dealer: Hartwell Dunstable in Dunstable. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-bc36c170f728

• The nearest: 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue, under a mile from this car. Mileage: 10,579 miles. Price: £23,532, £1,402 less than this car. Dealer: D M Keith Byd Keighley in Keighley. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-9d0dc3c97b1d