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: 11,882 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

At 11,882 miles, this 2026 BYD Seal U Boost has covered about 9,900 more miles than other 2026 BYD Seal U cars. Its asking price of £23,400 is £764 below the AskCar estimate of £24,164. The AskCar estimate uses 853 UK dealer adverts for the BYD Seal U, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this advert 18 days ago, and its asking price has since fallen by £100. The seller is Marshall BYD Canterbury, based in Canterbury. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £764 (3%) under the AskCar estimate of £24,164.

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 2026 BYD Seal U with the 1.5 plug-in hybrid engine is typically advertised at £27,000: the median of the 366 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2026 BYD Seal U has been on sale for at least 18 days.

Price history

AskCar first saw this advert on 17 October 2026 at £23,500. Its asking price is now £23,400, £100 less. The latest price cut was seen on 29 October 2026.

Price changes recorded:

• 17 October 2026: £23,500
• 29 October 2026: £23,400

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 9,900 miles higher than the median mileage of a 2026 BYD Seal U on AskCar.

Similar cars

254 other 2026 BYD Seal U Boost 1.5 plug-in hybrid automatic SUVs are for sale at UK dealers, from £22,742 to £35,595, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white. Mileage: 11,876 miles. Price: £23,400, the same price as this car. Dealer: Marshall BYD St Neots in St Neots. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-89816dbe1acb
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black. Mileage: 11,829 miles. Price: £23,500, £100 more than this car. Dealer: Marshall BYD Canterbury in Canterbury. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-db086333c21d
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white. Mileage: 11,776 miles. Price: £23,799, £399 more than this car. Dealer: Vertu BYD Morpeth in Morpeth. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-e20574c73ce6

• The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white, under a mile from this car. Mileage: 12,831 miles. Price: £23,300, £100 less than this car. Dealer: Marshall BYD Canterbury in Canterbury. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-16c965f94019