2025 BYD Seal 6 1.5 Boost

Overview

• Make: BYD
• Model: Seal 6
• Trim: Boost
• Version: 1.5 10kWh Boost CVT FWD Euro 6 (s/s) 4dr (180 bhp)
• Year: 2025
• Mileage: 1,425 miles
• Fuel: Plug-in hybrid (petrol)
• Body: Saloon, 4 doors, 5 seats
• Engine: 1.5 litres, 180 bhp
• Gearbox: Automatic (CVT)
• Drive: Front-wheel drive
• Colour: White
• CO2: 52 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2025 BYD Seal 6 Boost is advertised with 1,425 miles, approximately 4,700 below the typical mileage for its age. The dealer is asking £21,990, which is £912 below the AskCar estimate of £22,902. To work out the AskCar estimate, we analyse UK dealer adverts for 198 BYD Seal 6 cars across different ages and specifications. We first recorded this advert 163 days ago, and its asking price has since fallen by £6,000. It is for sale at Sinclair Group in Bridgend. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Fair price: £912 (3%) under the AskCar estimate of £22,902.

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 198 priced BYD Seal 6 adverts across different ages and specifications, as of 7 November 2026.

A 2025 BYD Seal 6 with the 1.5 plug-in hybrid engine is typically advertised at £22,200: the median of the 90 for sale on AskCar, as of 7 November 2026.

Time on sale

This 2025 BYD Seal 6 has been on sale for at least 163 days.

Price history

AskCar first saw this advert on 28 May 2026 at £27,990. Its asking price is now £21,990, £6,000 less. The latest price cut was seen on 6 November 2026.

Price changes recorded:

• 28 May 2026: £27,990
• 8 July 2026: £26,990
• 11 September 2026: £25,490
• 25 September 2026: £24,490
• 13 October 2026: £23,990
• 29 October 2026: £23,390
• 6 November 2026: £21,990

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 4,700 miles lower than the median mileage of a 2025 BYD Seal 6 on AskCar.

Similar cars

5 other 2025 BYD Seal 6 Boost 1.5 plug-in hybrid automatic saloons are for sale at UK dealers, from £20,999 to £32,995, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2025 BYD Seal 6 Boost, 1.5 plug-in hybrid saloon, blue. Mileage: 2,815 miles. Price: £21,840, £150 less than this car. Dealer: Evans Halshaw BYD Bury in Bury. AskCar page: https://askcar.co.uk/car/byd-seal-6-2025-cade26e4b3f8
• 2025 BYD Seal 6 Boost, 1.5 plug-in hybrid saloon, blue. Mileage: 10 miles. Price: £32,995, £11,005 more than this car. Dealer: Arnold Clark Shiremoor Motorstore / MG / BYD / Vanstore in Shiremoor. AskCar page: https://askcar.co.uk/car/byd-seal-6-2025-4e1881369691
• 2025 BYD Seal 6 Boost, 1.5 plug-in hybrid saloon, black. Mileage: 2,897 miles. Price: £20,999, £991 less than this car. Dealer: LSH Auto BYD Tamworth in Tamworth. AskCar page: https://askcar.co.uk/car/byd-seal-6-2025-05f15af92990