2018 BMW 6 Series Gran Coupe prices

There are 21 used 2018 BMW 6 Series Gran Coupe cars for sale from UK dealers on AskCar, as of 10 November 2026. Typical asking price £17,700 (the median: half cost less, half cost more). The cheapest is £13,995. The middle half are priced between £17,000 and £20,000. Median mileage: about 61,000 miles.

Dealers lowered the asking price on more than a quarter of 2018 BMW 6 Series Gran Coupe cars: 7 of the 21 in the 14 days to 10 November 2026.

2018 BMW 6 Series Gran Coupe prices by engine and mileage

EngineAll mileagesUnder 20,000 miles20,000 to 40,000 miles40,000 to 60,000 miles60,000 miles or more
3.0 diesel£17,700Too few for saleToo few for saleToo few for saleToo few for sale

2018 BMW 6 Series Gran Coupe prices by trim

TrimTypical asking price, 2018 cars
M Sport£17,700

Typical asking prices are of 2018 BMW 6 Series Gran Coupe cars for sale on 10 November 2026, and are given only where at least 20 cars with a price are for sale.

AskCar lists 113 used BMW 6 Series Gran Coupe across the UK, from 101 dealerships.

As of 10 November 2026, AskCar lists 591,054 cars and vans from 12,888 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

2018 BMW 6 Series Gran Coupe cars for sale now

This page picks out up to 10 cars in each of these groups: best value, cheapest, lowest mileage, recently reduced and newly advertised. A car in more than one group is listed in full once. The groups pick only from cars with photos and an AskCar estimate, priced at £500 or more and no more than 25% under that estimate. All 19 cars listed here meet these rules.

The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 111 priced BMW 6 Series Gran Coupe adverts on AskCar as of 10 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2018 BMW 6 Series Gran Coupe.

Each car: year, make, model, engine and trim, power, gearbox, fuel, body, doors, colour; mileage; price and its changes; how the price compares with the AskCar estimate; emissions standard and ULEZ compliance where it holds; MOT; dealer and town; AskCar page. Each car's AskCar page has its full price history and cheaper cars like it.

This list leaves out 2 cars whose advertised mileage is lower than the mileage recorded at their last MOT test.

Best value 2018 BMW 6 Series Gran Coupe: priced furthest below the AskCar estimate

These 10 are priced 0% to 21% under their AskCar estimate. Their asking prices run from £13,995 to £19,995.

Cheapest 2018 BMW 6 Series Gran Coupe: the lowest asking prices

These 10 are priced £13,995 to £17,500. They have covered 62,612 to 97,254 miles.

Lowest-mileage 2018 BMW 6 Series Gran Coupe

These 10 have covered 8,000 to 62,612 miles. Their asking prices run from £17,099 to £27,995.

Recently reduced 2018 BMW 6 Series Gran Coupe: the biggest price reductions in the 14 days to 10 November 2026

The dealer lowered the asking price on each of these 7 in the 14 days to 10 November 2026. Their reductions since AskCar first saw them run from £250 to £1,600.

Newly advertised 2018 BMW 6 Series Gran Coupe: first seen by AskCar in the 7 days to 10 November 2026

These 2 are the most recently advertised. Cars first seen on the same day are listed cheapest first.

BMW 6 Series Gran Coupe by gearbox, fuel and body

BMW 6 Series Gran Coupe prices by year

BMW 6 Series Gran Coupe by trim

BMW 6 Series Gran Coupe by price

BMW 6 Series Gran Coupe near you

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