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: 6,830 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

The advertised mileage for this 2025 BYD Seal U Boost is 6,830 miles. Its asking price of £24,122 is £268 below the AskCar estimate of £24,390. To work out the AskCar estimate, we analyse UK dealer adverts for 853 BYD Seal U cars across different ages and specifications. The dealer may accept less. This car has been on sale for at least 139 days, and its asking price is down £1,777. 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: £268 (1%) under the AskCar estimate of £24,390.

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

The dealer may accept less. This 2025 BYD Seal U has been on sale for at least 139 days, and its asking price has been cut by £1,777. 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 18 June 2026 at £25,899. Its asking price is now £24,122, £1,777 less. The latest price cut was seen on 17 October 2026.

Price changes recorded:

• 18 June 2026: £25,899
• 6 July 2026: £25,877
• 12 July 2026: £25,807
• 14 July 2026: £25,727
• 17 July 2026: £25,520
• 29 July 2026: £25,312
• 3 August 2026: £25,142
• 6 August 2026: £25,122
• 12 August 2026: £24,819
• 14 August 2026: £24,732
• 28 August 2026: £24,490
• 16 September 2026: £25,399
• 30 September 2026: £24,390
• 2 October 2026: £24,340
• 5 October 2026: £24,286
• 7 October 2026: £24,397
• 9 October 2026: £24,214
• 15 October 2026: £24,154
• 17 October 2026: £24,122

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 1,300 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, black. Mileage: 6,916 miles. Price: £23,600, £522 less than this car. Dealer: Vospers OMODA & Jaecoo Exeter in Exeter. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-eae15e4c2857
• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 6,735 miles. Price: £23,390, £732 less than this car. Dealer: Motor Village in Stoke-on-Trent. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-74867024bf9e
• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black. Mileage: 6,659 miles. Price: £23,795, £327 less than this car. Dealer: Pentagon Derby in Derby. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-91f092f770ce

• 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, £590 less than this car. Dealer: D M Keith Byd Keighley in Keighley. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-9d0dc3c97b1d