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: 10,272 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

This 2025 BYD Seal U Boost has covered 10,272 miles, around 2,100 more miles than is typical for its age. Priced at £24,495, it is advertised £1,011 above the AskCar estimate of £23,484. The AskCar estimate uses 865 UK dealer adverts for the BYD Seal U, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this car for sale today. 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 10 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,011 (4%) over the AskCar estimate of £23,484.

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 865 priced BYD Seal U adverts across different ages and specifications, as of 10 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 508 for sale on AskCar, as of 10 November 2026.

Time on sale

AskCar first saw this 2025 BYD Seal U advertised today. About half of 2025 BYD Seal U cars are gone from sale within a month of being advertised: 646 of the 1,224 first advertised between 11 July 2026 and 7 October 2026.

Price history

AskCar first saw this advert on 10 November 2026 at £24,495. Its asking price has not changed.

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 2,100 miles higher than the median mileage of a 2025 BYD Seal U on AskCar.

Similar cars

106 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 10 November 2026.

The 3 closest to this car in mileage:

• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black. Mileage: 10,248 miles. Price: £23,998, £497 less than this car. Dealer: Arnold Clark Ayr BYD in Prestwick. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-d0dffe8ba288
• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 10,240 miles. Price: £23,698, £797 less than this car. Dealer: Arnold Clark Shiremoor Motorstore / MG / BYD / Vanstore in Shiremoor. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-d6a2f7eff82c
• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 10,156 miles. Price: £22,779, £1,716 less than this car. Dealer: D. M. Keith in Doncaster. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-e26488449008

• The nearest: 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white, under a mile from this car. Mileage: 4,796 miles. Price: £24,495, the same price as this car. Dealer: Hartwell Watford in Watford. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-966bbe91fbf0