2018 BMW 6 Series Gran Turismo

3.0 640i M Sport Auto 4WD Euro 6 (s/s) 5dr GT (335 bhp)

£17,100

Fair price: within 8% of the typical £18,472 for this model, age and mileage, drawing on 71 adverts of this make and model.

Overview

Make
BMW
Model
6 Series Gran Turismo
Trim
M SPORT
Version
3.0 640i M Sport Auto 4WD Euro 6 (s/s) 5dr GT (335 bhp)
Mileage
82,935 miles
Year
2018
Fuel type
Petrol
Body type
Hatchback
Engine
3.0 L
Gearbox
Automatic
Power
335 bhp
Seats
5
CO2
187 g/km
Colour
Blue
Doors
5
Driven wheels
Four Wheel Drive
Engine badge
640i
Emissions standard
Euro 6

About this car

This 2018 BMW 6 Series Gran Turismo M Sport has covered 82,935 miles. Our estimated market asking price is £18,472. This car is advertised at £17,100, which is £1,372 below that figure. To estimate its market asking price, we analyse UK dealer adverts for 71 BMW 6 Series Gran Turismo cars across different ages and specifications. We first recorded this advert 27 days ago, and its asking price has since fallen by £900. Its recorded MOT is valid until 18 February 2027, and its advertised mileage is consistent with the latest MOT reading. It is advertised by Car Planet Watford in Rickmansworth.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 29 September 2026, 27 days ago. Advert duration calculated on 26 October 2026. Net asking-price reduction: £900 from the first recorded £18,000. 3 price reductions recorded, the latest observed on 23 October 2026.

Recorded asking prices
Date observedAsking price
29 September 2026£18,000
11 October 2026£17,700
17 October 2026£17,400
23 October 2026£17,100

Price and mileage comparison

Estimated market asking price: £18,472. The asking price is £1,372 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 71 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 400 miles lower than typical for a 2018 BMW 6 Series Gran Turismo.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 18 February 2027. 80,586 miles at the last test.

7 other cars with the same year, trim, gearbox and fuel are for sale from £14,490 to £21,500.

Other matching cars (up to five, cheapest first)
Asking priceMileage
£14,49087,139 miles
£15,20077,502 miles
£15,69076,750 miles
£17,45037,899 miles
£17,49153,863 miles

These cars have covered 37,899–87,139 miles, compared with 82,935 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 Turismo cars for sale · 2018 BMW 6 Series Gran Turismo price guide

How to contact the dealer, its opening hours and the cheaper cars like this one are on this AskCar page.

Vehicle photos

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