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: 4,414 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 4,414 miles on the clock, this 2026 BYD Seal U Boost has done roughly 2,400 more miles than a typical 2026 BYD Seal U. Priced at £25,990, it is advertised £181 above the AskCar estimate of £25,809. The AskCar estimate uses 853 UK dealer adverts for the BYD Seal U, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 15 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: £181 (under 1%) over 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 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 15 days.

Price history

AskCar first saw this advert on 20 October 2026 at £26,290. Its asking price is now £25,990, £300 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 20 October 2026: £26,290
• 31 October 2026: £25,990

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 2,400 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: 4,384 miles. Price: £25,295, £695 less than this car. Dealer: Pentagon BYD Nottingham in Nottingham. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-7443d75a45c8
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 4,354 miles. Price: £24,900, £1,090 less than this car. Dealer: John Clark BYD Aberdeen in Aberdeen. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-3bec3c53e8db
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 4,179 miles. Price: £22,990, £3,000 less than this car. Dealer: Swansway Garages BYD Crewe in Crewe. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-cbb4aed8404a

• 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