2018 BMW 6 Series Gran Coupe

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

£17,190

Fair price: within 8% of the typical £17,320 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: 76,237 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: Black
Doors: 4
Driven wheels: Rear Wheel Drive
Engine badge: 640d
Emissions standard: Euro 6

About this car

With 76,237 miles on the clock, this 2018 BMW 6 Series Gran Coupe M Sport has done roughly 15,400 more miles than a typical 2018 BMW 6 Series Gran Coupe. The dealer is asking £17,190, which is £130 below our market estimate of £17,320. Our estimate draws on 104 BMW 6 Series Gran Coupe adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. Since we first spotted the advert 45 days ago, the asking price has dropped by £600. Its recorded MOT is valid until 3 September 2027, and its advertised mileage is consistent with the latest MOT reading. The seller is Stratstone BMW Bury St Edmunds, based in Bury St Edmunds.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 10 September 2026, 45 days ago. Advert duration calculated on 25 October 2026. Net asking-price reduction: £600 from the first recorded £17,790. 3 price reductions recorded, the latest observed on 16 October 2026.

Recorded asking prices
Date observed	Asking price
10 September 2026	£17,790
20 September 2026	£17,090
2 October 2026	£16,990
15 October 2026	£17,290
16 October 2026	£17,190
23 October 2026	£17,190

Price and mileage comparison

Estimated market asking price: £17,320. The asking price is £130 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 15,400 miles higher than typical for a 2018 BMW 6 Series Gran Coupe.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 3 September 2027. 76,184 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
£17,299	62,612 miles

These cars have covered 8,000–86,833 miles, compared with 76,237 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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