2018 BMW 6 Series

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

£21,695

Fair price: within 8% of the typical £22,453 for this model, age and mileage, drawing on 155 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
47,000 miles
Year
2018
Fuel type
Diesel
Body type
Convertible
Engine
3.0 L
Gearbox
Automatic
Power
308 bhp
Seats
4
CO2
153 g/km
Colour
Blue
Doors
2
Driven wheels
Rear Wheel Drive
Engine badge
640d
Emissions standard
Euro 6

About this car

This 2018 BMW 6 Series M Sport has covered 47,000 miles. The dealer is asking £21,695, which is £758 below our market estimate of £22,453. To estimate its market asking price, we analyse UK dealer adverts for 155 BMW 6 Series cars across different ages and specifications. We first recorded this advert 88 days ago, and its asking price has since fallen by £1,200. That history is worth bearing in mind when speaking to the dealer. MOT records show an expiry date of 24 November 2026, and the latest recorded mileage is consistent with the advert. It is for sale at Autothentic in York.

Stock data from 22 October 2026.

How we estimate prices and check cars

Price history

First seen on 27 July 2026, 88 days ago. Advert duration calculated on 23 October 2026. Net asking-price reduction: £1,200 from the first recorded £22,895. 4 price reductions recorded, the latest observed on 20 October 2026.

Recorded asking prices
Date observedAsking price
27 July 2026£22,895
28 July 2026£22,895
5 August 2026£22,995
6 August 2026£22,995
26 September 2026£22,595
13 October 2026£21,995
18 October 2026£21,895
20 October 2026£21,695
22 October 2026£21,695

Price and mileage comparison

Estimated market asking price: £22,453. The asking price is £758 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 155 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 700 miles higher than typical for a 2018 BMW 6 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 24 November 2026. 43,892 miles at the last test.

6 other cars with the same year, trim, gearbox and fuel are for sale from £18,500 to £29,495.

Other matching cars (up to five, cheapest first)
Asking priceMileage
£18,50057,000 miles
£18,99563,700 miles
£21,49551,000 miles
£22,49571,000 miles
£25,99526,734 miles

These cars have covered 10,190–71,000 miles, compared with 47,000 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 · 2018 BMW 6 Series price guide

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

Vehicle photos

AskCar lists 588,092 cars from 13,071 UK dealer locations, read and updated daily from dealer websites. More than any other UK site. No dealer pays to be listed.