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: 5,308 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: Grey
• CO2: 20 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 5,308 miles, this 2026 BYD Seal U Boost has covered about 2,800 more miles than other 2026 BYD Seal U cars. The AskCar estimate for this car is £25,729. It is priced at £24,400, which is £1,329 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 850 BYD Seal U cars across different ages and specifications. We first recorded this advert 45 days ago, and its asking price has since fallen by £1,000. The seller is Marshall BYD Peterborough, based in Peterborough. 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: £1,329 (5%) under the AskCar estimate of £25,729.

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 45 days.

Price history

AskCar first saw this advert on 18 September 2026 at £25,400. Its asking price is now £24,400, £1,000 less. The latest price cut was seen on 29 October 2026.

Price changes recorded:

• 18 September 2026: £25,400
• 19 September 2026: £25,800
• 25 September 2026: £24,900
• 2 October 2026: £24,800
• 8 October 2026: £24,600
• 17 October 2026: £24,500
• 29 October 2026: £24,400

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 2,800 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: 5,492 miles. Price: £24,399, the same price as this car. Dealer: Halliwell Jones North Wales BYD in Conwy. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-0e01775087aa
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 5,103 miles. Price: £25,045, £645 more 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, black. Mileage: 5,088 miles. Price: £25,990, £1,590 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, white, under a mile from this car. Mileage: 9,151 miles. Price: £23,799, £601 less than this car. Dealer: cinch in Peterborough. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-2b29ad67e171