2023 BMW 8 Series Gran Coupe 3.0 840i M Sport

Overview

• Make: BMW
• Model: 8 Series Gran Coupe
• Trim: M Sport
• Version: 3.0 840i M Sport Auto RWD Euro 6 4dr (328 bhp)
• Year: 2023
• Mileage: 34,500 miles
• Fuel: Petrol
• Body: Coupe, 4 doors, 5 seats
• Engine: 3.0 litres, 328 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 194 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2023 BMW 8 Series Gran Coupe M Sport is advertised with 34,500 miles, approximately 8,500 above the typical mileage for its age. The AskCar estimate for this car is £36,158. It is priced at £38,980, which is £2,822 above that estimate. The AskCar estimate uses 121 UK dealer adverts for the BMW 8 Series Gran Coupe, with adjustments for age, mileage, trim, engine and other specifications. It first appeared in our advert records today. Its advertised mileage matches the government's MOT record. It is for sale at Tier One Automotive in Kings Langley. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £2,822 (7%) over the AskCar estimate of £36,158.

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 121 priced BMW 8 Series Gran Coupe adverts across different ages and specifications, as of 6 November 2026.

A 2023 BMW 8 Series Gran Coupe with the 3.0 petrol engine is typically advertised at £38,000: the median of the 23 for sale on AskCar, as of 6 November 2026.

Time on sale

AskCar first saw this 2023 BMW 8 Series Gran Coupe advertised today.

Price history

AskCar first saw this advert on 6 November 2026 at £38,980. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 4 January 2027.

It has had one MOT, on 5 January 2026, and passed.

Advisories at the latest test: nearside front tyre worn close to legal limit/worn on edge on inner & outer edges.

Mileage at that test: 25,625 miles, which matches the advertised 34,500 miles.

Advertised mileage is about 8,500 miles higher than the median mileage of a 2023 BMW 8 Series Gran Coupe on AskCar.

Similar cars

17 other 2023 BMW 8 Series Gran Coupe M Sport 3.0 petrol automatic coupes are for sale at UK dealers, from £34,550 to £45,000, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2023 BMW 8 Series Gran Coupe M Sport, 3.0 petrol coupe, grey. Mileage: 34,844 miles. Price: £37,490, £1,490 less than this car. Dealer: Stratstone Bmw Hull in Kingston upon Hull. AskCar page: https://askcar.co.uk/car/bmw-8-series-gran-coupe-2023-60162e049f5d
• 2023 BMW 8 Series Gran Coupe M Sport, 3.0 petrol coupe, grey. Mileage: 35,966 miles. Price: £34,550, £4,430 less than this car. Dealer: Vines of Gatwick BMW in Crawley. AskCar page: https://askcar.co.uk/car/bmw-8-series-gran-coupe-2023-d9ff20b6943d
• 2023 BMW 8 Series Gran Coupe M Sport, 3.0 petrol coupe, black. Mileage: 30,879 miles. Price: £37,645, £1,335 less than this car. Dealer: Group 1 Borehamwood BMW in Borehamwood. AskCar page: https://askcar.co.uk/car/bmw-8-series-gran-coupe-2023-661c3d565656