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: 3,795 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

This 2026 BYD Seal U Boost is advertised with 3,795 miles on the clock. Its asking price of £25,290 is £598 below the AskCar estimate of £25,888. The AskCar estimate uses UK dealer asking prices, including 853 BYD Seal U adverts, and accounts for the car’s age, mileage and specification. We first recorded this advert 28 days ago, and its asking price has since fallen by £200. The seller is Swansway Garages BYD Crewe, based in Crewe. 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: £598 (2%) under the AskCar estimate of £25,888.

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 28 days.

Price history

AskCar first saw this advert on 7 October 2026 at £25,490. Its asking price is now £25,290, £200 less. The latest price cut was seen on 24 October 2026.

Price changes recorded:

• 7 October 2026: £25,490
• 24 October 2026: £25,290

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 1,800 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, white. Mileage: 3,785 miles. Price: £24,700, £590 less than this car. Dealer: Marshall BYD Canterbury in Canterbury. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-7a95f50ffa5d
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 3,637 miles. Price: £26,299, £1,009 more than this car. Dealer: Gates of Harlow in Harlow. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-f84086c3f2fc
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white. Mileage: 3,616 miles. Price: £26,299, £1,009 more than this car. Dealer: Gates of Harlow in Harlow. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-751c7b6b6753

• The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey, under a mile from this car. Mileage: 3,065 miles. Price: £25,290, the same price as this car. Dealer: Swansway Garages BYD Crewe in Crewe. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-56fe7205020d