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: 5,014 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

This 2026 BYD Seal U Boost has covered 5,014 miles, around 2,500 more miles than is typical for its age. The dealer is asking £23,799, which is £2,010 below the AskCar estimate of £25,809. To work out the AskCar estimate, we analyse UK dealer adverts for 850 BYD Seal U cars across different ages and specifications. Since we first spotted the advert 20 days ago, the asking price has dropped by £200. It is advertised by Halliwell Jones North Wales BYD in Llandudno Junction. 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: £2,010 (7%) under the AskCar estimate of £25,809.

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 20 days.

Price history

AskCar first saw this advert on 13 October 2026 at £23,999. Its asking price is now £23,799, £200 less. The latest price cut was seen on 27 October 2026.

Price changes recorded:

• 13 October 2026: £23,999
• 20 October 2026: £23,899
• 27 October 2026: £23,799

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 2,500 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, black. Mileage: 5,000 miles. Price: £24,995, £1,196 more than this car. Dealer: EMG Motor Group Spalding BYD in Spalding. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-1350af31af36
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 5,000 miles. Price: £26,499, £2,700 more than this car. Dealer: D. M. Keith in Leeds. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-d5ff9d5f4bf3
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black. Mileage: 5,088 miles. Price: £25,990, £2,191 more than this car. Dealer: SG Petch Darlington in Darlington. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-4794bd5752aa

• The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey, under a mile from this car. Mileage: 5,492 miles. Price: £24,399, £600 more than this car. Dealer: Halliwell Jones North Wales BYD in Conwy. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-0e01775087aa