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: 4,057 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

At 4,057 miles, this 2025 BYD Seal U Boost has covered about 4,100 fewer miles than other 2025 BYD Seal U cars. Its asking price of £24,990 is £17 above the AskCar estimate of £24,973. 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 91 days, and its asking price is down £900. The seller is SG Petch Darlington, based in Darlington. 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: £17 (under 1%) over the AskCar estimate of £24,973.

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 91 days, and its asking price has been cut by £900. 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 5 August 2026 at £25,890. Its asking price is now £24,990, £900 less. The latest price cut was seen on 10 October 2026.

Price changes recorded:

• 6 August 2026: £25,890
• 8 September 2026: £25,490
• 10 October 2026: £24,990

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 4,100 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: 4,279 miles. Price: £23,490, £1,500 less than this car. Dealer: Snows BYD Southampton in Southampton. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-87b62d77ffb5
• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 3,745 miles. Price: £23,599, £1,391 less 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
• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 3,682 miles. Price: £23,690, £1,300 less than this car. Dealer: Snows BYD Newbury in Newbury. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-f384aec6057c

• The nearest: 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey, under a mile from this car. Mileage: 4,499 miles. Price: £25,290, £300 more than this car. Dealer: SG Petch Darlington in Darlington. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-1876f1cc67ff