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: 12,843 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: Blue
• CO2: 20 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 12,843 miles, this 2026 BYD Seal U Boost has covered about 10,800 more miles than other 2026 BYD Seal U cars. Priced at £22,742, it is advertised £1,286 below the AskCar estimate of £24,028. To work out the AskCar estimate, we analyse UK dealer adverts for 853 BYD Seal U cars across different ages and specifications. The asking price is now £2,006 lower than when we first recorded the advert 59 days ago. It is for sale at D. M. Keith in Doncaster. 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: £1,286 (5%) under the AskCar estimate of £24,028.

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

This 2026 BYD Seal U has been on sale for at least 59 days.

Price history

AskCar first saw this advert on 6 September 2026 at £24,748. Its asking price is now £22,742, £2,006 less. The latest price cut was seen on 3 November 2026.

Price changes recorded:

• 6 September 2026: £24,748
• 8 September 2026: £24,338
• 11 September 2026: £24,278
• 15 September 2026: £24,225
• 18 September 2026: £24,167
• 20 September 2026: £23,944
• 21 September 2026: £24,081
• 24 September 2026: £23,862
• 25 September 2026: £23,803
• 29 September 2026: £23,691
• 2 October 2026: £23,789
• 3 October 2026: £23,684
• 5 October 2026: £23,605
• 8 October 2026: £23,678
• 9 October 2026: £23,567
• 11 October 2026: £23,537
• 12 October 2026: £23,538
• 13 October 2026: £23,531
• 14 October 2026: £23,561
• 15 October 2026: £23,549
• 16 October 2026: £23,527
• 17 October 2026: £23,415
• 20 October 2026: £23,394
• 22 October 2026: £23,386
• 28 October 2026: £22,915
• 3 November 2026: £21,840
• 4 November 2026: £22,742

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 10,800 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, white. Mileage: 12,831 miles. Price: £23,300, £558 more than this car. Dealer: Marshall BYD Canterbury in Canterbury. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-16c965f94019
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white. Mileage: 12,916 miles. Price: £23,300, £558 more than this car. Dealer: Marshall BYD St Neots in St Neots. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-7c1a2f1810e0
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 12,765 miles. Price: £22,742, the same price as this car. Dealer: D. M. Keith in Leeds. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-d56821b729f4