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: 11,616 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: Blue
• CO2: 20 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 11,616 miles on the clock, this 2026 BYD Seal U Boost has done roughly 8,800 more miles than a typical 2026 BYD Seal U. The AskCar estimate for this car is £24,054. It is priced at £23,700, which is £354 below that estimate. The AskCar estimate draws on 821 BYD Seal U adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this car for sale today. 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 8 November 2026.

How we estimate prices and check cars

Price

Fair price: £354 (1%) under the AskCar estimate of £24,054.

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 821 priced BYD Seal U adverts across different ages and specifications, as of 8 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 359 for sale on AskCar, as of 8 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: 166 of the 324 first advertised between 10 July 2026 and 5 October 2026.

Price history

AskCar first saw this advert on 8 November 2026 at £23,700. Its asking price has not changed.

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 8,800 miles higher than the median mileage of a 2026 BYD Seal U on AskCar.

Similar cars

251 other 2026 BYD Seal U Boost 1.5 plug-in hybrid automatic SUVs are for sale at UK dealers, from £22,516 to £35,595, as of 8 November 2026.

The 3 closest to this car in mileage:

• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white. Mileage: 11,590 miles. Price: £22,799, £901 less than this car. Dealer: D. M. Keith in Leeds. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-bf29c9d88603
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white. Mileage: 11,652 miles. Price: £23,400, £300 less than this car. Dealer: Marshall BYD Maidstone in Maidstone. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-a8137280bd7a
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black. Mileage: 11,674 miles. Price: £23,795, £95 more than this car. Dealer: Startin BYD (Redditch) in Redditch. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-7c1875d58fbb

• The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black, under a mile from this car. Mileage: 8,314 miles. Price: £23,900, £200 more than this car. Dealer: Marshall BYD Northampton in Northampton. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-15ab27190f5f