2026 BYD Seal U 1.5 Boost
Version: 1.5 18.3kWh Boost CVT FWD Euro 6 (s/s) 5dr (214 bhp)
Price: £24,400. Fair price: £1,258 (4%) under the AskCar estimate of £25,658, our expected asking price for this car from its model, age, mileage and specification, drawing on 867 priced BYD Seal U adverts on AskCar as of 1 November 2026.
AskCar lists 875 used BYD Seal U from 160 UK dealerships, as of 1 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)
- Mileage
- 5,603 miles
- Year
- 2026
- Fuel type
- Plug-in hybrid (petrol)
- Body type
- SUV
- Engine
- 1.5 L
- Gearbox
- Automatic
- Power
- 214 bhp
- Seats
- 5
- CO2
- 20 g/km
- Colour
- White
- Doors
- 5
- Driven wheels
- Front Wheel Drive
- Gearbox version
- CVT
- Engine badge
- Boost
- Hybrid type
- Plug-in hybrid
- Emissions standard
- Euro 6
About this car
This 2026 BYD Seal U Boost has covered 5,603 miles, around 3,000 more miles than is typical for its age. The dealer is asking £24,400, which is £1,258 below the AskCar estimate of £25,658. To work out the AskCar estimate, we analyse UK dealer adverts for 867 BYD Seal U cars across different ages and specifications. We first recorded this car for sale 1 day ago. The seller is Marshall BYD Swindon, based in Swindon.
Stock data as of 1 November 2026.
Price history
AskCar first saw this advert on 31 October 2026, 1 day ago.
| Date observed | Asking price |
|---|---|
| 31 October 2026 | £24,400 |
| 1 November 2026 | £24,400 |
Price and mileage comparison
Fair price: £1,258 (4%) under the AskCar estimate of £25,658.
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 867 priced BYD Seal U adverts across different ages and specifications, as of 1 November 2026.
Advertised mileage is about 3,000 miles higher than the median mileage of a 2026 BYD Seal U on AskCar.
MOT
MOT: first test not yet due.
Other matching cars
248 other 2026 BYD Seal U Boost automatic plug-in hybrids (petrol) are for sale at UK dealers from £22,742 to £35,595, as of 1 November 2026.
The 5 cheapest:
- 2026 BYD Seal U. Price: £22,742. Mileage: 12,765 miles. Dealer: D. M. Keith in Leeds. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-d56821b729f4
- 2026 BYD Seal U. Price: £22,995. Mileage: 14,485 miles. Dealer: Park's Motor Group Ford Stirling in Stirling. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-5bc712ea92d7
- 2026 BYD Seal U. Price: £23,200. Mileage: 13,638 miles. Dealer: Marshall BYD St Neots in St Neots. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-a6e7f999bf73
- 2026 BYD Seal U. Price: £23,295. Mileage: 8,129 miles. Dealer: Startin BYD (Redditch) in Redditch. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-e6bc4392f6c6
- 2026 BYD Seal U. Price: £23,300. Mileage: 12,831 miles. Dealer: Marshall BYD Canterbury in Canterbury. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-16c965f94019
The 248 matching cars have covered 1 to 15,698 miles, compared with 5,603 miles for this car.
Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. The AskCar estimate adjusts for these differences.
Browse all BYD Seal U cars for sale · 2026 BYD Seal U price guide
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Photos
1 photo of this car is on its AskCar page.
How to contact the dealer and its opening hours are on this AskCar page.
As of 1 November 2026, AskCar lists 578,994 cars and vans from 12,654 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.