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: 6,614 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 6,614 miles, approximately 4,100 above the typical mileage for its age. The AskCar estimate for this car is £25,376. It is priced at £27,489, which is £2,113 above that estimate. The AskCar estimate uses 850 UK dealer adverts for the BYD Seal U, with adjustments for age, mileage, trim, engine and other specifications. We have tracked this advert for 38 days. The seller is Desmond Motors Londonderry, based in Londonderry. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Above the going rate: £2,113 (8%) over the AskCar estimate of £25,376.

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 850 priced BYD Seal U adverts across different ages and specifications, as of 2 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 362 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2026 BYD Seal U has been on sale for at least 38 days.

Price history

AskCar first saw this advert on 25 September 2026 at £27,489. Its asking price has not changed.

Mileage and MOT

MOT: first test not yet due.

Advertised mileage is about 4,100 miles higher than the median mileage of a 2026 BYD Seal U on AskCar.

Similar cars

246 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 2 November 2026.

The 3 closest to this car in mileage:

• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, blue. Mileage: 6,592 miles. Price: £24,988, £2,501 less than this car. Dealer: Snows BYD Waterlooville in Waterlooville. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-ded6817b41e1
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, black. Mileage: 6,582 miles. Price: £24,990, £2,499 less than this car. Dealer: Lloyd Select Blackpool in Blackpool. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-095a0d36b8ee
• 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, grey. Mileage: 6,431 miles. Price: £24,299, £3,190 less than this car. Dealer: Halliwell Jones North Wales BYD in Conwy. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-c42125577a2f

• The nearest: 2026 BYD Seal U Boost, 1.5 plug-in hybrid SUV, white, under a mile from this car. Mileage: 7,828 miles. Price: £27,489, the same price as this car. Dealer: Desmond Motors Londonderry in Derry. AskCar page: https://askcar.co.uk/car/byd-seal-u-2026-5228e1c682de