2018 BMW 6 Series Gran Coupe

3.0 640d M Sport Auto RWD Euro 6 (s/s) 4dr (309 bhp)

£17,500

Fair price: within 8% of the typical £18,480 for this model, age and mileage, drawing on 104 adverts of this make and model.

Overview

Make: BMW
Model: 6 Series Gran Coupe
Trim: M SPORT
Version: 3.0 640d M Sport Auto RWD Euro 6 (s/s) 4dr (309 bhp)
Mileage: 67,211 miles
Year: 2018
Fuel type: Diesel
Body type: Saloon
Engine: 3.0 L
Gearbox: Automatic
Power: 309 bhp
Seats: 5
CO2: 152 g/km
Colour: Multicolour
Doors: 4
Driven wheels: Rear Wheel Drive
Engine badge: 640d
Emissions standard: Euro 6

About this car

At 67,211 miles, this 2018 BMW 6 Series Gran Coupe M Sport has covered about 6,400 more miles than other 2018 BMW 6 Series Gran Coupe cars. The dealer is asking £17,500, which is £980 below our market estimate of £18,480. To estimate its market asking price, we analyse UK dealer adverts for 104 BMW 6 Series Gran Coupe cars across different ages and specifications. We first saw this car advertised 150 days ago. Its asking price has since fallen by £480. Our records show an MOT expiry date of 30 January 2026, which has passed. Ask the dealer for an update. The advertised mileage is consistent with the mileage at its latest MOT. It is advertised by Scottish Motor Services in Glasgow.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 28 May 2026, 150 days ago. Advert duration calculated on 25 October 2026. Net asking-price reduction: £480 from the first recorded £17,980. 1 price reduction recorded, the latest observed on 14 August 2026.

Recorded asking prices
Date observed	Asking price
28 May 2026	£17,980
10 July 2026	£17,980
14 August 2026	£17,500
23 October 2026	£17,500

Price and mileage comparison

Estimated market asking price: £18,480. The asking price is £980 below this estimate.

The estimate uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It estimates an advertised price, not a confirmed sale price.

The pricing calculation includes 104 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 6,400 miles higher than typical for a 2018 BMW 6 Series Gran Coupe.

The advertised mileage is consistent with the last MOT reading.

The recorded MOT has expired; ask the dealer for an up-to-date MOT.

MOT

MOT not valid until 30 January 2026. 61,141 miles at the last test.

15 other cars with the same year, trim, gearbox and fuel are for sale from £15,495 to £27,995.

Other matching cars (up to five, cheapest first)
Asking price	Mileage
£15,495	86,000 miles
£16,400	83,433 miles
£16,500	86,833 miles
£16,995	82,568 miles
£17,190	76,237 miles

These cars have covered 8,000–86,833 miles, compared with 67,211 miles for this car.

Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. Our estimate adjusts for these differences using the wider market data.

Browse all BMW 6 Series Gran Coupe cars for sale · 2018 BMW 6 Series Gran Coupe price guide

Vehicle photos

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