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: 2,860 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

The advertised mileage for this 2026 BYD Seal U Boost is 2,860 miles. Its asking price of £25,799 is £207 below the AskCar estimate of £26,006. The AskCar estimate uses 853 UK dealer adverts for the BYD Seal U, with adjustments for age, mileage, trim, engine and other specifications. This car was first seen in our listings data 5 days ago. The seller is Gates Of Stevenage, based in Stevenage. 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: £207 (under 1%) under the AskCar estimate of £26,006.

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

AskCar first saw this 2026 BYD Seal U advertised 5 days ago. 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 30 October 2026 at £25,799. Its asking price has not changed.

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 900 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: 2,730 miles. Price: £24,899, £900 less than this car. Dealer: cinch in Northampton. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-2c6c45be3b4f
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white. Mileage: 2,729 miles. Price: £26,390, £591 more than this car. Dealer: SG Petch Darlington in Darlington. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-c9c4c1e2b71d
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 2,999 miles. Price: £27,995, £2,196 more than this car. Dealer: D. M. Keith in Leeds. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-69728428328c

• The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey, under a mile from this car. Mileage: 3,993 miles. Price: £28,499, £2,700 more than this car. Dealer: Gates Of Stevenage in Stevenage. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-806eb7391e8a