2026 BYD Seal U 1.5 Boost

Price: £23,400. Fair price: £547 (2%) under the AskCar estimate of £23,947, our expected asking price for this car from its model, age, mileage and specification, drawing on 914 priced BYD Seal U adverts on AskCar as of 12 November 2026.

AskCar lists 933 used BYD Seal U from 163 UK dealerships, as of 12 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: 11,567 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 is advertised with 11,567 miles, approximately 7,700 above the typical mileage for its age. Priced at £23,400, it is advertised £547 below the AskCar estimate of £23,947. The AskCar estimate draws on 914 BYD Seal U adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We have tracked this advert today. The seller is Marshall BYD Canterbury, based in Canterbury. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 12 November 2026.

How we estimate prices and check cars

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

Price

Fair price: £547 (2%) under the AskCar estimate of £23,947.

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 914 priced BYD Seal U adverts across different ages and specifications, as of 12 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 400 for sale on AskCar, as of 12 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: 178 of the 341 first advertised between 13 July 2026 and 9 October 2026.

Price history

AskCar first saw this advert on 12 November 2026 at £23,400. Its asking price has not changed.

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 7,700 miles higher than the median mileage of a 2026 BYD Seal U on AskCar.

Similar cars

275 other 2026 BYD Seal U Boost 1.5 plug-in hybrid automatic SUVs are for sale at UK dealers, from £22,599 to £35,595, as of 12 November 2026.

The 3 closest to this car in mileage:

  • 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 11,586 miles. Price: £23,400, the same price as this car. Dealer: Marshall BYD Canterbury in Canterbury. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-eb84beea513a
  • 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white. Mileage: 11,590 miles. Price: £22,799, £601 less than this car. Dealer: D. M. Keith in Leeds. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-bf29c9d88603
  • 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white. Mileage: 11,537 miles. Price: £23,400, the same price as this car. Dealer: Marshall BYD Maidstone in Maidstone. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-ec5bf05e563a
  • The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white, under a mile from this car. Mileage: 3,785 miles. Price: £24,599, £1,199 more than this car. Dealer: cinch in Canterbury. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-0c74706cefde

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

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Photos

1 photo of this car is on its AskCar page.

As of 12 November 2026, AskCar lists 596,362 cars and vans from 12,840 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.