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: 6,958 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: Grey
• CO2: 20 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2026 BYD Seal U Boost has covered 6,958 miles, around 4,500 more miles than is typical for its age. The AskCar estimate for this car is £25,284. It is priced at £24,200, which is £1,084 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 850 BYD Seal U cars across different ages and specifications. We first recorded this advert 4 days ago, and its asking price has since fallen by £700. 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 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,084 (4%) under the AskCar estimate of £25,284.

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 850 priced BYD Seal U adverts across different ages and specifications, as of 2 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 362 for sale on AskCar, as of 2 November 2026.

Time on sale

AskCar first saw this 2026 BYD Seal U advertised 4 days ago. About half of 2026 BYD Seal U cars are gone from sale within a month of being advertised: 140 of the 282 first advertised between 10 July 2026 and 29 September 2026.

Price history

AskCar first saw this advert on 29 October 2026 at £24,900. Its asking price is now £24,200, £700 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 29 October 2026: £24,900
• 31 October 2026: £24,200

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 4,500 miles higher than the median mileage of a 2026 BYD Seal U on AskCar.

Similar cars

246 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 2 November 2026.

The 3 closest to this car in mileage:

• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 7,000 miles. Price: £26,998, £2,798 more than this car. Dealer: D. M. Keith Cupra York in York. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-356efd5790af
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white. Mileage: 7,053 miles. Price: £27,489, £3,289 more than this car. Dealer: Desmond Motors Londonderry in Derry. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-8b16b47f86cb
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 6,832 miles. Price: £24,800, £600 more than this car. Dealer: Marshall BYD Peterborough in Peterborough. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-6caf8dc14820

• The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white, under a mile from this car. Mileage: 9,151 miles. Price: £23,799, £401 less than this car. Dealer: cinch in Peterborough. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-2b29ad67e171