2018 BMW 6 Series Gran Coupe

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

£18,989

Fair price: within 8% of the typical £20,211 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
53,125 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
Blue
Doors
4
Driven wheels
Rear Wheel Drive
Engine badge
640d
Emissions standard
Euro 6

About this car

With 53,125 miles on the clock, this 2018 BMW 6 Series Gran Coupe M Sport has done roughly 7,700 fewer miles than a typical 2018 BMW 6 Series Gran Coupe. At £18,989, it is advertised £1,222 below our estimated market asking price of £20,211. The estimate uses 104 UK dealer adverts for the BMW 6 Series Gran Coupe, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 40 days ago. Its asking price has since fallen by £760. MOT records show an expiry date of 20 May 2027, and the latest recorded mileage is consistent with the advert. It is for sale at A6 Motors in Bedford.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 15 September 2026, 40 days ago. Advert duration calculated on 25 October 2026. Net asking-price reduction: £760 from the first recorded £19,749. 1 price reduction recorded, the latest observed on 9 October 2026.

Recorded asking prices
Date observedAsking price
15 September 2026£19,749
9 October 2026£18,989
23 October 2026£18,989

Price and mileage comparison

Estimated market asking price: £20,211. The asking price is £1,222 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 7,700 miles lower than typical for a 2018 BMW 6 Series Gran Coupe.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 20 May 2027. 50,238 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 priceMileage
£15,49586,000 miles
£16,40083,433 miles
£16,50086,833 miles
£16,99582,568 miles
£17,19076,237 miles

These cars have covered 8,000–86,833 miles, compared with 53,125 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

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