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: 2,729 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: White
• CO2: 20 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2026 BYD Seal U Boost is 2,729 miles. Its asking price of £26,390 is £367 above the AskCar estimate of £26,023. The AskCar estimate draws on 853 BYD Seal U adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 32 days ago. Its asking price has since fallen by £100. The seller is SG Petch Darlington, based in Darlington. 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: £367 (1%) over the AskCar estimate of £26,023.

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

This 2026 BYD Seal U has been on sale for at least 32 days.

Price history

AskCar first saw this advert on 3 October 2026 at £26,490. Its asking price is now £26,390, £100 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 3 October 2026: £26,490
• 31 October 2026: £26,390

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 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, white. Mileage: 2,730 miles. Price: £24,899, £1,491 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: 2,670 miles. Price: £24,998, £1,392 less than this car. Dealer: Arnold Clark Stirling Volvo / GWM / BYD in Stirling. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-1dabac53ec2c
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 2,662 miles. Price: £26,700, £310 more than this car. Dealer: Glyn Hopkin BYD Ipswich in Ipswich. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-6d1cb52aee42

• The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue, under a mile from this car. Mileage: 2,464 miles. Price: £26,490, £100 more than this car. Dealer: SG Petch Darlington in Darlington. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-18af0734e0d2