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: 8,566 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

This 2026 BYD Seal U Boost has covered 8,566 miles, around 4,800 more miles than is typical for its age. The AskCar estimate for this car is £24,549. It is priced at £24,200, which is £349 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 895 BYD Seal U cars across different ages and specifications. This car was first seen in our listings data today. The seller is Marshall BYD Maidstone, based in Maidstone. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 11 November 2026.

How we estimate prices and check cars

Price

Fair price: £349 (1%) under the AskCar estimate of £24,549.

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 895 priced BYD Seal U adverts across different ages and specifications, as of 11 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 389 for sale on AskCar, as of 11 November 2026.

Time on sale

AskCar first saw this 2026 BYD Seal U advertised today. About half of 2026 BYD Seal U cars are gone from sale within a month of being advertised: 181 of the 343 first advertised between 11 July 2026 and 8 October 2026.

Price history

AskCar first saw this advert on 11 November 2026 at £24,200. Its asking price has not changed.

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 4,800 miles higher than the median mileage of a 2026 BYD Seal U on AskCar.

Similar cars

269 other 2026 BYD Seal U Boost 1.5 plug-in hybrid automatic SUVs are for sale at UK dealers, from £22,455 to £35,595, as of 11 November 2026.

The 3 closest to this car in mileage:

• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black. Mileage: 8,595 miles. Price: £23,800, £400 less than this car. Dealer: Marshall BYD Peterborough in Peterborough. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-aab1a285d1ba
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black. Mileage: 8,685 miles. Price: £23,995, £205 less than this car. Dealer: Startin BYD (Redditch) in Redditch. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-826f39ac2faa
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 8,442 miles. Price: £27,594, £3,394 more than this car. Dealer: cinch in Ashford. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-dba8809b0b86

• The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue, under a mile from this car. Mileage: 2,510 miles. Price: £27,490, £3,290 more than this car. Dealer: Marshall BYD Maidstone in Maidstone. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-28c1c5405a76