2026 BYD Seal U 1.5 Boost

Price: £24,300. Fair price: £305 (1%) over the AskCar estimate of £23,995, our expected asking price for this car from its model, age, mileage and specification, drawing on 865 priced BYD Seal U adverts on AskCar as of 10 November 2026.

AskCar lists 886 used BYD Seal U from 161 UK dealerships, as of 10 November 2026.

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: 11,984 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: Black
  • CO2: 20 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

This 2026 BYD Seal U Boost has covered 11,984 miles, around 9,000 more miles than is typical for its age. Its asking price of £24,300 is £305 above the AskCar estimate of £23,995. To work out the AskCar estimate, we analyse UK dealer adverts for 865 BYD Seal U cars across different ages and specifications. It first appeared in our advert records today. The seller is Marshall BYD Northampton, based in Northampton. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 10 November 2026.

How we estimate prices and check cars

Marshall BYD Northampton is rated 4.4 out of 5 on Google.

Price

Fair price: £305 (1%) over the AskCar estimate of £23,995.

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 865 priced BYD Seal U adverts across different ages and specifications, as of 10 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 367 for sale on AskCar, as of 10 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: 171 of the 332 first advertised between 10 July 2026 and 7 October 2026.

Price history

AskCar first saw this advert on 10 November 2026 at £24,300. Its asking price has not changed.

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 9,000 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 £22,462 to £35,595, as of 10 November 2026.

The 3 closest to this car in mileage:

  • 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black. Mileage: 12,038 miles. Price: £23,800, £500 less than this car. Dealer: Marshall BYD Peterborough in Peterborough. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-a968590d2d5a
  • 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white. Mileage: 12,039 miles. Price: £23,300, £1,000 less than this car. Dealer: Marshall BYD Peterborough in Peterborough. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-afd1ab77ee16
  • 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 12,062 miles. Price: £22,599, £1,701 less than this car. Dealer: D. M. Keith in Doncaster. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-21f75d081d33
  • The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey, under a mile from this car. Mileage: 11,738 miles. Price: £23,499, £801 less than this car. Dealer: cinch in Northampton. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-2eccdffc538a

Browse all BYD Seal U cars for sale · 2026 BYD Seal U price guide

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Photos

21 photos of this car are on its AskCar page.

As of 10 November 2026, AskCar lists 591,054 cars and vans from 12,888 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.