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: 9,403 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 9,403 miles on the clock, this 2026 BYD Seal U Boost has done roughly 7,400 more miles than a typical 2026 BYD Seal U. The AskCar estimate for this car is £24,584. It is priced at £23,995, which is £589 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 853 BYD Seal U cars across different ages and specifications. The dealer may accept less. This car has been on sale for at least 98 days, and its asking price is down £2,395. The seller is Evans Halshaw BYD Mansfield, based in Mansfield. 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: £589 (2%) under the AskCar estimate of £24,584.

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

The dealer may accept less. This 2026 BYD Seal U has been on sale for at least 98 days, and its asking price has been cut by £2,395. 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 July 2026 at £26,390. Its asking price is now £23,995, £2,395 less. The latest price cut was seen on 29 October 2026.

Price changes recorded:

• 29 July 2026: £26,390
• 25 September 2026: £24,750
• 1 October 2026: £25,780
• 7 October 2026: £24,770
• 15 October 2026: £24,550
• 22 October 2026: £24,070
• 29 October 2026: £23,995

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 7,400 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: 9,416 miles. Price: £25,299, £1,304 more than this car. Dealer: Gates of Harlow in Harlow. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-31b659c4f0b5
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 9,443 miles. Price: £27,489, £3,494 more than this car. Dealer: Desmond Motors Londonderry in Derry. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-770aeb6498df
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white. Mileage: 9,275 miles. Price: £23,799, £196 less than this car. Dealer: cinch in Peterborough. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-14c3bb3455ba

• The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey, 9 miles from this car. Mileage: 4,384 miles. Price: £25,295, £1,300 more than this car. Dealer: Pentagon BYD Nottingham in Nottingham. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-7443d75a45c8