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: 11,068 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

With 11,068 miles on the clock, this 2026 BYD Seal U Boost has done roughly 8,200 more miles than a typical 2026 BYD Seal U. The AskCar estimate for this car is £24,121. It is priced at £23,900, which is £221 below that estimate. The AskCar estimate draws on 814 BYD Seal U adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. This car was first seen in our listings data 1 day ago. The seller is Marshall BYD Northampton, based in Northampton. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 9 November 2026.

How we estimate prices and check cars

Price

Fair price: £221 (under 1%) under the AskCar estimate of £24,121.

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 814 priced BYD Seal U adverts across different ages and specifications, as of 9 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 360 for sale on AskCar, as of 9 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: 168 of the 327 first advertised between 10 July 2026 and 6 October 2026.

Price history

AskCar first saw this advert on 8 November 2026 at £23,900. Its asking price has not changed.

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 8,200 miles higher than the median mileage of a 2026 BYD Seal U on AskCar.

Similar cars

252 other 2026 BYD Seal U Boost 1.5 plug-in hybrid automatic SUVs are for sale at UK dealers, from £22,469 to £35,595, as of 9 November 2026.

The 3 closest to this car in mileage:

• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white. Mileage: 11,103 miles. Price: £23,500, £400 less than this car. Dealer: Saxtons.co.uk in Chelmsford. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-a95cabb39e43
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black. Mileage: 10,851 miles. Price: £23,500, £400 less than this car. Dealer: Marshall BYD Peterborough in Peterborough. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-58f6a7e71cb0
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 10,851 miles. Price: £24,083, £183 more than this car. Dealer: Glyn Hopkin BYD East London in London. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-ad8397fdecfe

• The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black, under a mile from this car. Mileage: 8,314 miles. Price: £23,900, the same price as this car. Dealer: Marshall BYD Northampton in Northampton. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-15ab27190f5f