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: 12,223 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 12,223 miles, around 9,800 more miles than is typical for its age. The AskCar estimate for this car is £24,114. It is priced at £23,399, which is £715 below that estimate. The AskCar estimate uses 854 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 3 days ago. The seller is cinch, based in Peterborough. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £715 (2%) under the AskCar estimate of £24,114.

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 854 priced BYD Seal U adverts across different ages and specifications, as of 6 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 372 for sale on AskCar, as of 6 November 2026.

Time on sale

AskCar first saw this 2026 BYD Seal U advertised 3 days ago. About half of 2026 BYD Seal U cars are gone from sale within a month of being advertised: 161 of the 316 first advertised between 10 July 2026 and 3 October 2026.

Price history

AskCar first saw this advert on 3 November 2026 at £23,399. Its asking price has not changed.

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 9,800 miles higher than the median mileage of a 2026 BYD Seal U on AskCar.

Similar cars

255 other 2026 BYD Seal U Boost 1.5 plug-in hybrid automatic SUVs are for sale at UK dealers, from £22,582 to £35,595, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black. Mileage: 12,160 miles. Price: £27,489, £4,090 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, black. Mileage: 12,071 miles. Price: £23,590, £191 more than this car. Dealer: Swansway Garages BYD Chester in Chester. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-384e3fbe07eb
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 12,062 miles. Price: £22,599, £800 less than this car. Dealer: D. M. Keith in Doncaster. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-21f75d081d33

• 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, £400 more than this car. Dealer: cinch in Peterborough. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-14c3bb3455ba