2025 BYD Seal U 1.5 Boost
Price: £23,500. Fair price: £359 (1%) under the AskCar estimate of £23,859, our expected asking price for this car from its model, age, mileage and specification, drawing on 853 priced BYD Seal U adverts on AskCar as of 4 November 2026.
AskCar lists 877 used BYD Seal U from 161 UK dealerships, as of 4 November 2026.
Overview
- Make: BYD
- Model: Seal U
- Trim: Boost
- Version: 1.5 18.3kWh Boost CVT FWD Euro 6 (s/s) 5dr (214 bhp)
- Year: 2025
- Mileage: 8,945 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
The advertised mileage for this 2025 BYD Seal U Boost is 8,945 miles. Its asking price of £23,500 is £359 below the AskCar estimate of £23,859. The AskCar estimate draws on 853 BYD Seal U adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 9 days ago. Its asking price has since fallen by £200. 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 4 November 2026.
Price
Fair price: £359 (1%) under the AskCar estimate of £23,859.
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 2025 BYD Seal U with the 1.5 plug-in hybrid engine is typically advertised at £24,600: the median of the 497 for sale on AskCar, as of 4 November 2026.
Time on sale
This 2025 BYD Seal U has been on sale for at least 9 days.
Price history
AskCar first saw this advert on 26 October 2026 at £23,700. Its asking price is now £23,500, £200 less. The latest price cut was seen on 29 October 2026.
Price changes recorded:
- 26 October 2026: £23,700
- 29 October 2026: £23,500
Mileage and MOT
MOT: first test not yet due.
Advertised mileage is about 800 miles higher than the median mileage of a 2025 BYD Seal U on AskCar.
Similar cars
102 other 2025 BYD Seal U Boost 1.5 plug-in hybrid automatic SUVs are for sale at UK dealers, from £22,440 to £33,995, as of 4 November 2026.
The 3 closest to this car in mileage:
- 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 8,979 miles. Price: £24,995, £1,495 more than this car. Dealer: EMC Uckfield Vauxhall in Uckfield. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-447d9ed84217
- 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 9,006 miles. Price: £23,400, £100 less than this car. Dealer: Marshall BYD St Neots in St Neots. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-62b95c580732
- 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black. Mileage: 8,807 miles. Price: £23,995, £495 more than this car. Dealer: Pentagon BYD Burton in Burton upon Trent. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-9f862c9f553a
- The nearest: 2025 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey, under a mile from this car. Mileage: 11,384 miles. Price: £23,199, £301 less than this car. Dealer: cinch in Northampton. AskCar page: https://askcar.co.uk/car/byd-seal-u-2025-b5a572feac4a
Browse all BYD Seal U cars for sale · 2025 BYD Seal U price guide
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Photos
21 photos of this car are on its AskCar page.
As of 4 November 2026, AskCar lists 592,552 cars and vans from 12,964 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.