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: 4,910 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

This 2026 BYD Seal U Boost is advertised with 4,910 miles, approximately 2,900 above the typical mileage for its age. Priced at £23,990, it is advertised £1,750 below the AskCar estimate of £25,740. The AskCar estimate draws on 859 BYD Seal U adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. This car was first seen in our listings data today. The seller is Swansway Garages BYD Crewe, based in Crewe. 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: £1,750 (6%) under the AskCar estimate of £25,740.

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 859 priced BYD Seal U adverts across different ages and specifications, as of 5 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 374 for sale on AskCar, as of 5 November 2026.

Time on sale

AskCar first saw this 2026 BYD Seal U advertised today. About half of 2026 BYD Seal U cars are gone from sale within a month of being advertised: 157 of the 306 first advertised between 10 July 2026 and 2 October 2026.

Price history

AskCar first saw this advert on 5 November 2026 at £23,990. Its asking price has not changed.

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 2,900 miles higher than the median mileage of a 2026 BYD Seal U on AskCar.

Similar cars

255 other 2026 BYD Seal U Boost 1.5 plug-in hybrid automatic SUVs are for sale at UK dealers, from £22,599 to £35,595, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 4,886 miles. Price: £26,778, £2,788 more than this car. Dealer: D. M. Keith in Doncaster. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-e9cd7a0d56a3
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 4,824 miles. Price: £25,998, £2,008 more than this car. Dealer: Arnold Clark Mercedes-Benz Of Perth in Perth. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-a7171d3a7235
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 4,999 miles. Price: £28,990, £5,000 more than this car. Dealer: Pentagon Lincoln Used Car Centre in Lincoln. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-f64f6b3de177

• The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey, under a mile from this car. Mileage: 3,065 miles. Price: £25,290, £1,300 more than this car. Dealer: Swansway Garages BYD Crewe in Crewe. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-620fc03a34ab