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: 6,327 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 has covered 6,327 miles. Its asking price of £23,599 is £918 below the AskCar estimate of £24,517. The AskCar estimate uses 853 UK dealer adverts for the BYD Seal U, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 22 days ago, the asking price has dropped by £200. It is for sale at Halliwell Jones North Wales BYD in Llandudno Junction. 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: £918 (3%) under the AskCar estimate of £24,517.

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 22 days.

Price history

AskCar first saw this advert on 13 October 2026 at £23,799. Its asking price is now £23,599, £200 less. The latest price cut was seen on 27 October 2026.

Price changes recorded:

• 13 October 2026: £23,799
• 20 October 2026: £23,699
• 27 October 2026: £23,599

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 1,800 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: 6,368 miles. Price: £25,999, £2,400 more than this car. Dealer: Gates Of Stevenage in Stevenage. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-dab04d962aff
• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 6,384 miles. Price: £23,799, £200 more than this car. Dealer: cinch in St Neots. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-2181e374e819
• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 6,259 miles. Price: £22,490, £1,109 less than this car. Dealer: Swansway Garages BYD Crewe in Crewe. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-642695b43c37

• The nearest: 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue, under a mile from this car. Mileage: 4,511 miles. Price: £23,997, £398 more than this car. Dealer: Halliwell Jones North Wales BYD in Conwy. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-42e60796a161