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: 5,045 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: Blue
• CO2: 20 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 5,045 miles on the clock, this 2025 BYD Seal U Boost has done roughly 3,100 fewer miles than a typical 2025 BYD Seal U. Priced at £25,512, it is advertised £665 above the AskCar estimate of £24,847. The AskCar estimate uses 853 UK dealer adverts for the BYD Seal U, with adjustments for age, mileage, trim, engine and other specifications. This car was first seen in our listings data 21 days ago. The seller is Vertu BYD Gloucester, based in Gloucester. 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: £665 (2%) over the AskCar estimate of £24,847.

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 21 days.

Price history

AskCar first saw this advert on 14 October 2026 at £25,512. Its asking price has not changed.

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 3,100 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, white. Mileage: 5,020 miles. Price: £24,490, £1,022 less than this car. Dealer: Swansway Garages BYD Crewe in Crewe. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-ed5e33f5ac30
• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 5,012 miles. Price: £24,102, £1,410 less than this car. Dealer: Vertu BYD Morpeth in Morpeth. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-829d76432cbd
• 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 5,193 miles. Price: £24,695, £817 less than this car. Dealer: Stoneacre in Wigan. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-e05fd193115d

• The nearest: 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey, under a mile from this car. Mileage: 7,369 miles. Price: £24,019, £1,493 less than this car. Dealer: Vertu BYD Gloucester in Gloucester. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-20dc76ea5259