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: 12,039 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 12,039 miles, this 2026 BYD Seal U Boost has covered about 10,000 more miles than other 2026 BYD Seal U cars. The dealer is asking £23,300, which is £842 below the AskCar estimate of £24,142. To work out the AskCar estimate, we analyse UK dealer adverts for 853 BYD Seal U cars across different ages and specifications. Since we first spotted the advert 6 days ago, the asking price has dropped by £800. The seller is Marshall BYD Peterborough, based in Peterborough. 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: £842 (3%) under the AskCar estimate of £24,142.

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 2026 BYD Seal U with the 1.5 plug-in hybrid engine is typically advertised at £27,000: the median of the 366 for sale on AskCar, as of 4 November 2026.

Time on sale

AskCar first saw this 2026 BYD Seal U advertised 6 days ago. About half of 2026 BYD Seal U cars are gone from sale within a month of being advertised: 151 of the 300 first advertised between 10 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 29 October 2026 at £24,100. Its asking price is now £23,300, £800 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 29 October 2026: £24,100
• 31 October 2026: £23,300

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 10,000 miles higher than the median mileage of a 2026 BYD Seal U on AskCar.

Similar cars

254 other 2026 BYD Seal U Boost 1.5 plug-in hybrid automatic SUVs are for sale at UK dealers, from £22,742 to £35,595, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black. Mileage: 12,038 miles. Price: £23,800, £500 more than this car. Dealer: Marshall BYD Peterborough in Peterborough. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-a968590d2d5a
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black. Mileage: 12,071 miles. Price: £23,590, £290 more than this car. Dealer: Swansway Garages BYD Chester in Chester. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-afc98895f1cf
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black. Mileage: 12,160 miles. Price: £27,489, £4,189 more than this car. Dealer: Desmond Motors Londonderry in Derry. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-b9fc50dccc0a

• The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white, under a mile from this car. Mileage: 9,275 miles. Price: £23,799, £499 more than this car. Dealer: cinch in Peterborough. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-14c3bb3455ba