2023 BMW 8 Series 3.0 840i M Sport

Overview

• Make: BMW
• Model: 8 Series
• Trim: M Sport
• Version: 3.0 840i M Sport Steptronic RWD Euro 6 (s/s) 2dr (328 bhp)
• Year: 2023
• Mileage: 23,128 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 3.0 litres, 328 bhp
• Gearbox: Automatic (Steptronic)
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 195 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 23,128 miles on the clock, this 2023 BMW 8 Series M Sport has done roughly 4,100 more miles than a typical 2023 BMW 8 Series. The dealer is asking £43,990, which is £4,322 above the AskCar estimate of £39,668. To work out the AskCar estimate, we analyse UK dealer adverts for 183 BMW 8 Series cars across different ages and specifications. We first saw this car advertised 39 days ago. Its asking price has since fallen by £1,000. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Group 1 Southend BMW, based in Leigh-on-SEA. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 10 November 2026.

How we estimate prices and check cars

Price

Above the going rate: £4,322 (10%) over the AskCar estimate of £39,668.

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 183 priced BMW 8 Series adverts across different ages and specifications, as of 10 November 2026.

A 2023 BMW 8 Series with the 3.0 petrol engine is typically advertised at £39,900: the median of the 15 for sale on AskCar, as of 10 November 2026.

Time on sale

This 2023 BMW 8 Series has been on sale for at least 39 days.

Price history

AskCar first saw this advert on 2 October 2026 at £44,990. Its asking price is now £43,990, £1,000 less. The latest price cut was seen on 3 November 2026.

Price changes recorded:

• 2 October 2026: £44,990
• 27 October 2026: £44,290
• 3 November 2026: £43,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 10 November 2026: valid until 10 February 2027.

It has had one MOT, on 11 February 2026, and passed.

Advisories at the latest test: nearside front tyre slightly damaged/cracking or perishing.

Mileage at that test: 20,701 miles, which matches the advertised 23,128 miles.

Advertised mileage is about 4,100 miles higher than the median mileage of a 2023 BMW 8 Series on AskCar.

Similar cars

1 other 2023 BMW 8 Series M Sport 3.0 petrol automatic convertible is for sale at UK dealers, as of 10 November 2026.

The closest to this car in mileage:

• 2023 BMW 8 Series M Sport, 3.0 petrol convertible, grey. Mileage: 15,611 miles. Price: £48,200, £4,210 more than this car. Dealer: Vines of Gatwick BMW in Crawley. AskCar page: https://askcar.co.uk/car/bmw-8-series-2023-48abf3668e58