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: 8,136 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: Black
• CO2: 20 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 8,136 miles on the clock, this 2026 BYD Seal U Boost has done roughly 6,100 more miles than a typical 2026 BYD Seal U. The AskCar estimate for this car is £24,910. It is priced at £29,250, which is £4,340 above 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 99 days. The seller is Busseys BYD Norwich, based in Norwich. 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

Above the going rate: £4,340 (17%) over the AskCar estimate of £24,910.

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 99 days. 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 28 July 2026 at £29,250. Its asking price has not changed.

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 6,100 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: 8,129 miles. Price: £23,295, £5,955 less than this car. Dealer: Startin BYD (Redditch) in Redditch. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-e6bc4392f6c6
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 8,168 miles. Price: £24,499, £4,751 less than this car. Dealer: cinch in Ashford. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-c9f6cffbfaff
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black. Mileage: 8,058 miles. Price: £24,290, £4,960 less than this car. Dealer: Swansway Garages BYD Chester in Chester. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-33518145fd63

• The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue, 38 miles from this car. Mileage: 2,420 miles. Price: £26,203, £3,047 less than this car. Dealer: Glyn Hopkin BYD Ipswich in Ipswich. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-089336b18a7c