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: 12,740 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

With 12,740 miles on the clock, this 2026 BYD Seal U Boost has done roughly 10,700 more miles than a typical 2026 BYD Seal U. Its asking price of £23,899 is £144 below the AskCar estimate of £24,043. The AskCar estimate draws on 853 BYD Seal U adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this car for sale 6 days ago. It is advertised by cinch in Northampton. 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: £144 (under 1%) under the AskCar estimate of £24,043.

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 6 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 29 October 2026 at £23,899. Its asking price has not changed.

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 10,700 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, black. Mileage: 12,727 miles. Price: £23,399, £500 less than this car. Dealer: cinch in St Neots. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-9ecc8fbbb4f2
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 12,765 miles. Price: £22,742, £1,157 less than this car. Dealer: D. M. Keith in Leeds. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-d56821b729f4
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white. Mileage: 12,831 miles. Price: £23,300, £599 less than this car. Dealer: Marshall BYD Canterbury in Canterbury. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-16c965f94019

• The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black, under a mile from this car. Mileage: 8,314 miles. Price: £23,900, the same price as this car. Dealer: Marshall BYD Northampton in Northampton. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-15ab27190f5f