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: 10,643 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 10,643 miles on the clock, this 2026 BYD Seal U Boost has done roughly 7,800 more miles than a typical 2026 BYD Seal U. The AskCar estimate for this car is £24,191. It is priced at £23,499, which is £692 below that estimate. The AskCar estimate uses 821 UK dealer adverts for the BYD Seal U, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this advert 36 days ago, and its asking price has since fallen by £1,000. The seller is Hartwell Banbury, based in Banbury. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 8 November 2026.

How we estimate prices and check cars

Price

Fair price: £692 (2%) under the AskCar estimate of £24,191.

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 821 priced BYD Seal U adverts across different ages and specifications, as of 8 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 359 for sale on AskCar, as of 8 November 2026.

Time on sale

This 2026 BYD Seal U has been on sale for at least 36 days.

Price history

AskCar first saw this advert on 3 October 2026 at £24,499. Its asking price is now £23,499, £1,000 less. The latest price cut was seen on 8 November 2026.

Price changes recorded:

• 3 October 2026: £24,499
• 7 October 2026: £23,999
• 10 October 2026: £23,899
• 8 November 2026: £23,499

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 7,800 miles higher than the median mileage of a 2026 BYD Seal U on AskCar.

Similar cars

251 other 2026 BYD Seal U Boost 1.5 plug-in hybrid automatic SUVs are for sale at UK dealers, from £22,516 to £35,595, as of 8 November 2026.

The 3 closest to this car in mileage:

• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black. Mileage: 10,851 miles. Price: £23,500, the same price as 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, £584 more than this car. Dealer: Glyn Hopkin BYD East London in London. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-ad8397fdecfe
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white. Mileage: 10,431 miles. Price: £23,699, £200 more than this car. Dealer: cinch in Peterborough. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-e04075c1af62

• The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black, 23 miles from this car. Mileage: 8,314 miles. Price: £23,900, £401 more than this car. Dealer: Marshall BYD Northampton in Northampton. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-15ab27190f5f