2025 BYD Seal 6 1.5 Boost

Overview

• Make: BYD
• Model: Seal 6
• Trim: Boost
• Version: 1.5 DM-i Boost CVT FWD Euro 6 5dr e (181 bhp)
• Year: 2025
• Mileage: 15,584 miles
• Fuel: Plug-in hybrid (petrol)
• Body: Estate, 5 doors, 5 seats
• Engine: 1.5 litres, 181 bhp
• Gearbox: Automatic (CVT)
• Drive: Front-wheel drive
• Colour: Black
• CO2: 60 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2025 BYD Seal 6 Boost has covered 15,584 miles, around 9,800 more miles than is typical for its age. The dealer is asking £19,900, which is £383 below the AskCar estimate of £20,283. To work out the AskCar estimate, we analyse UK dealer adverts for 197 BYD Seal 6 cars across different ages and specifications. We first recorded this advert 161 days ago, and its asking price has since fallen by £6,095. The seller is Marshall BYD Northampton, based in Northampton. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £383 (1%) under the AskCar estimate of £20,283.

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 197 priced BYD Seal 6 adverts across different ages and specifications, as of 5 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 91 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2025 BYD Seal 6 has been on sale for at least 161 days.

Price history

AskCar first saw this advert on 28 May 2026 at £25,995. Its asking price is now £19,900, £6,095 less. The latest price cut was seen on 27 October 2026.

Price changes recorded:

• 28 May 2026: £25,995
• 2 June 2026: £24,995
• 15 July 2026: £22,995
• 27 October 2026: £19,900

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 9,800 miles higher than the median mileage of a 2025 BYD Seal 6 on AskCar.

Similar cars

48 other 2025 BYD Seal 6 Boost 1.5 plug-in hybrid automatic estates are for sale at UK dealers, from £19,595 to £34,695, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2025 BYD Seal 6 Boost, 1.5 plug-in hybrid estate, beige. Mileage: 18,522 miles. Price: £20,490, £590 more than this car. Dealer: Marshall BYD Maidstone in Maidstone. AskCar page: https://askcar.co.uk/car/byd-seal-6-2025-9ef36c554f7e
• 2025 BYD Seal 6 Boost, 1.5 plug-in hybrid estate, black. Mileage: 12,179 miles. Price: £19,820, £80 less than this car. Dealer: Evans Halshaw BYD Shrewsbury in Shrewsbury. AskCar page: https://askcar.co.uk/car/byd-seal-6-2025-90a125e1b297
• 2025 BYD Seal 6 Boost, 1.5 plug-in hybrid estate, white. Mileage: 11,067 miles. Price: £20,890, £990 more than this car. Dealer: D. M. Keith BYD Hull in Kingston upon Hull. AskCar page: https://askcar.co.uk/car/byd-seal-6-2025-c96bcd38044f

• The nearest: 2025 BYD Seal 6 Boost, 1.5 plug-in hybrid estate, black, 26 miles from this car. Mileage: 8,000 miles. Price: £23,000, £3,100 more than this car. Dealer: Marshall BYD St Neots in St Neots. AskCar page: https://askcar.co.uk/car/byd-seal-6-2025-89f820360fe7