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: 3,301 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 3,301 miles on the clock. Its asking price of £24,700 is £1,311 below the AskCar estimate of £26,011. The AskCar estimate draws on 850 BYD Seal U adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 42 days ago. Its asking price has since fallen by £1,300. 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 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,311 (5%) under the AskCar estimate of £26,011.

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 850 priced BYD Seal U adverts across different ages and specifications, as of 2 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 362 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2026 BYD Seal U has been on sale for at least 42 days.

Price history

AskCar first saw this advert on 21 September 2026 at £26,000. Its asking price is now £24,700, £1,300 less. The latest price cut was seen on 29 October 2026.

Price changes recorded:

• 21 September 2026: £26,000
• 23 September 2026: £25,700
• 25 September 2026: £25,300
• 2 October 2026: £25,100
• 8 October 2026: £24,900
• 17 October 2026: £24,800
• 29 October 2026: £24,700

Mileage and MOT

MOT: first test not yet due.

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

Similar cars

246 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 2 November 2026.

The 3 closest to this car in mileage:

• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 3,309 miles. Price: £24,799, £99 more than this car. Dealer: cinch in Peterborough. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-3df74ef383ef
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black. Mileage: 3,440 miles. Price: £25,495, £795 more than this car. Dealer: Pentagon BYD Burton in Burton upon Trent. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-0d11eb2061a8
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 3,065 miles. Price: £25,290, £590 more than this car. Dealer: Swansway Garages BYD Crewe in Crewe. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-56fe7205020d

• The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black, under a mile from this car. Mileage: 7,990 miles. Price: £24,000, £700 less than this car. Dealer: Marshall BYD Maidstone in Maidstone. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-17b4cf2359f1