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: 5,088 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 5,088 miles on the clock, this 2026 BYD Seal U Boost has done roughly 3,100 more miles than a typical 2026 BYD Seal U. The AskCar estimate for this car is £25,712. It is priced at £25,990, which is £278 above that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 853 BYD Seal U cars across different ages and specifications. We first saw this car advertised 20 days ago. Its asking price has since fallen by £300. 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: £278 (1%) over the AskCar estimate of £25,712.

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 20 days.

Price history

AskCar first saw this advert on 15 October 2026 at £26,290. Its asking price is now £25,990, £300 less. The latest price cut was seen on 24 October 2026.

Price changes recorded:

• 15 October 2026: £26,290
• 24 October 2026: £25,990

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 3,100 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, grey. Mileage: 5,103 miles. Price: £25,045, £945 less than this car. Dealer: Glyn Hopkin BYD Waltham Abbey in Waltham Abbey. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-4ca4bc786dce
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white. Mileage: 5,014 miles. Price: £23,799, £2,191 less than this car. Dealer: Halliwell Jones North Wales BYD in Conwy. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-6b5a03924a8a
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black. Mileage: 5,000 miles. Price: £24,765, £1,225 less than this car. Dealer: EMG Motor Group Spalding BYD in Spalding. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-1350af31af36

• 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, £500 more than this car. Dealer: SG Petch Darlington in Darlington. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-18af0734e0d2