2026 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: 2026
• Mileage: 12,179 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 2026 BYD Seal U Boost has covered 12,179 miles, around 8,300 more miles than is typical for its age. The dealer is asking £23,200, which is £661 below the AskCar estimate of £23,861. To work out the AskCar estimate, we analyse UK dealer adverts for 914 BYD Seal U cars across different ages and specifications. We first recorded this advert 1 day ago, and its asking price has since fallen by £500. The seller is Marshall BYD Ashford, based in Ashford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 12 November 2026.

How we estimate prices and check cars

Price

Fair price: £661 (2%) under the AskCar estimate of £23,861.

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 914 priced BYD Seal U adverts across different ages and specifications, as of 12 November 2026.

A 2026 BYD Seal U with the 1.5 plug-in hybrid engine is typically advertised at £27,000: the median of the 400 for sale on AskCar, as of 12 November 2026.

Time on sale

AskCar first saw this 2026 BYD Seal U advertised 1 day ago. About half of 2026 BYD Seal U cars are gone from sale within a month of being advertised: 178 of the 341 first advertised between 13 July 2026 and 9 October 2026.

Price history

AskCar first saw this advert on 11 November 2026 at £23,700. Its asking price is now £23,200, £500 less. The latest price cut was seen on 12 November 2026.

Price changes recorded:

• 11 November 2026: £23,700
• 12 November 2026: £23,200

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 8,300 miles higher than the median mileage of a 2026 BYD Seal U on AskCar.

Similar cars

275 other 2026 BYD Seal U Boost 1.5 plug-in hybrid automatic SUVs are for sale at UK dealers, from £22,599 to £35,595, as of 12 November 2026.

The 3 closest to this car in mileage:

• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 12,180 miles. Price: £26,995, £3,795 more than this car. Dealer: The Car Group UK in Havering. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-7962b7086dbf
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black. Mileage: 12,160 miles. Price: £27,489, £4,289 more than this car. Dealer: Desmond Motors Londonderry in Derry. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-b9fc50dccc0a
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white. Mileage: 12,223 miles. Price: £23,299, £99 more than this car. Dealer: cinch in Peterborough. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-547936686630

• The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey, under a mile from this car. Mileage: 8,733 miles. Price: £23,799, £599 more than this car. Dealer: cinch in Ashford. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-5dafcefb154c