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: 6,118 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

This 2026 BYD Seal U Boost has covered 6,118 miles, around 4,100 more miles than is typical for its age. Its asking price of £25,790 is £352 above the AskCar estimate of £25,438. 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 saw this car advertised 47 days ago. Its asking price has since fallen by £460. It is advertised by Sinclair Group in Bridgend. 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: £352 (1%) over the AskCar estimate of £25,438.

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 47 days.

Price history

AskCar first saw this advert on 18 September 2026 at £26,250. Its asking price is now £25,790, £460 less. The latest price cut was seen on 29 October 2026.

Price changes recorded:

• 18 September 2026: £26,250
• 13 October 2026: £25,990
• 29 October 2026: £25,790

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 4,100 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, white. Mileage: 6,002 miles. Price: £23,994, £1,796 less than this car. Dealer: Pentagon Lincoln Used Car Centre in Lincoln. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-676b2ac17025
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 6,000 miles. Price: £26,999, £1,209 more than this car. Dealer: SG Petch Durham in Durham. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-db59dfc43865
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white. Mileage: 6,410 miles. Price: £23,788, £2,002 less than this car. Dealer: D. M. Keith in Leeds. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-32d62e744bcc

• The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue, 61 miles from this car. Mileage: 11,606 miles. Price: £23,716, £2,074 less than this car. Dealer: Vertu BYD Gloucester in Gloucester. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-ce2d7d6c8894