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: 4,796 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

At 4,796 miles, this 2025 BYD Seal U Boost has covered about 3,500 fewer miles than other 2025 BYD Seal U cars. Priced at £24,495, it is advertised £548 below the AskCar estimate of £25,043. The AskCar estimate draws on 850 BYD Seal U adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 56 days ago. Its asking price has since fallen by £1,300. The seller is Hartwell Watford, based in Watford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £548 (2%) under the AskCar estimate of £25,043.

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 850 priced BYD Seal U adverts across different ages and specifications, as of 2 November 2026.

A 2025 BYD Seal U with the 1.5 plug-in hybrid engine is typically advertised at £24,700: the median of the 484 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2025 BYD Seal U has been on sale for at least 56 days.

Price history

AskCar first saw this advert on 7 September 2026 at £25,795. Its asking price is now £24,495, £1,300 less. The latest price cut was seen on 28 October 2026.

Price changes recorded:

• 7 September 2026: £25,795
• 10 October 2026: £25,495
• 28 October 2026: £24,495

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 3,500 miles lower than the median mileage of a 2025 BYD Seal U on AskCar.

Similar cars

97 other 2025 BYD Seal U Boost 1.5 plug-in hybrid automatic SUVs are for sale at UK dealers, from £14,999 to £33,995, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 4,791 miles. Price: £24,495, the same price as this car. Dealer: Pentagon BYD Burton in Burton upon Trent. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-ca7f7505a025
• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 4,802 miles. Price: £24,200, £295 less than this car. Dealer: Marshall BYD Swindon in Swindon. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-70ce624ae04e
• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 4,836 miles. Price: £24,998, £503 more than this car. Dealer: Arnold Clark Linwood Motorstore / BYD in Linwood. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-73dc8f2e79e3

• The nearest: 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue, 16 miles from this car. Mileage: 4,560 miles. Price: £24,999, £504 more than this car. Dealer: Hartwell Dunstable in Dunstable. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-15b534392d3c