2017 BMW 6 Series

3.0 640d M Sport Auto RWD Euro 6 2dr (308 bhp)

£13,789

Fair price: within 8% of the typical £14,378 for this model, age and mileage, drawing on 158 adverts of this make and model.

Overview

Make: BMW
Model: 6 Series
Trim: M SPORT
Version: 3.0 640d M Sport Auto RWD Euro 6 2dr (308 bhp)
Mileage: 89,000 miles
Year: 2017
Fuel type: Diesel
Body type: Coupe
Engine: 3.0 L
Gearbox: Automatic
Power: 308 bhp
Seats: 4
CO2: 147 g/km
Colour: Black
Doors: 2
Driven wheels: Rear Wheel Drive
Engine badge: 640d
Emissions standard: Euro 6

About this car

This 2017 BMW 6 Series M Sport has covered 89,000 miles, around 7,000 more than typical for its age. Our estimated market asking price is £14,378. This car is advertised at £13,789, which is £589 below that figure. To estimate its market asking price, we analyse UK dealer adverts for 158 BMW 6 Series cars across different ages and specifications. The asking price is now £200 lower than when we first recorded the advert 50 days ago. It is for sale at The Car Guys in Dunstable.

Stock data from 21 October 2026.

How we estimate prices and check cars

Price history

First seen on 2 September 2026, 50 days ago. Advert duration calculated on 22 October 2026. Net asking-price reduction: £200 from the first recorded £13,989. 1 price reduction recorded, the latest observed on 11 September 2026.

Recorded asking prices
Date observed	Asking price
2 September 2026	£13,989
11 September 2026	£13,789
21 October 2026	£13,789

Price and mileage comparison

Estimated market asking price: £14,378. The asking price is £589 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 158 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 7,000 miles higher than typical for a 2017 BMW 6 Series.

5 other cars with the same year, trim, gearbox and fuel are for sale from £10,500 to £19,995.

Other matching cars
Asking price	Mileage
£10,500	112,023 miles
£14,995	82,000 miles
£14,995	82,000 miles
£19,299	59,000 miles
£19,995	59,300 miles

These cars have covered 59,000–112,023 miles, compared with 89,000 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 cars for sale · 2017 BMW 6 Series price guide

Dealer

The Car Guys, Dunstable. Across the dealer network: 69 cars for sale.

Dealer postcode: LU5 4JN.

Dealer opening hours

Monday: 11:00-18:00
Tuesday: 11:00-18:00
Wednesday: 11:00-18:00
Thursday: 11:00-18:00
Friday: 11:00-18:00
Saturday: 11:00-18:00
Sunday: Closed