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: 11,384 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

With 11,384 miles on the clock, this 2025 BYD Seal U Boost has done roughly 3,200 more miles than a typical 2025 BYD Seal U. The AskCar estimate for this car is £23,408. It is priced at £23,199, which is £209 below that estimate. The AskCar estimate uses 853 UK dealer adverts for the BYD Seal U, with adjustments for age, mileage, trim, engine and other specifications. We have tracked this advert for 4 days. You can find this car at cinch in Northampton. 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: £209 (under 1%) under the AskCar estimate of £23,408.

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

AskCar first saw this 2025 BYD Seal U advertised 4 days ago. 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 31 October 2026 at £23,199. Its asking price has not changed.

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 3,200 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 4 November 2026.

The 3 closest to this car in mileage:

• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 11,291 miles. Price: £23,199, the same price as this car. Dealer: cinch in St Neots. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-22dafd81e109
• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 11,275 miles. Price: £22,511, £688 less than this car. Dealer: D. M. Keith in Leeds. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-57b9ad0e2f16
• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 11,083 miles. Price: £22,799, £400 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, under a mile from this car. Mileage: 8,945 miles. Price: £23,500, £301 more than this car. Dealer: Marshall BYD Northampton in Northampton. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-7dfc3f162598