2018 BMW M3 prices

There are 25 used 2018 BMW M3 cars for sale from UK dealers on AskCar, as of 9 November 2026. Typical asking price £38,500 (the median: half cost less, half cost more). The cheapest is £32,495. The middle half are priced between £35,000 and £43,000. Median mileage: about 44,000 miles.

Dealers lowered the asking price on more than a third of 2018 BMW M3 cars: 9 of the 25 in the 14 days to 9 November 2026.

2018 BMW M3 prices by engine and mileage

Engine	All mileages	Under 20,000 miles	20,000 to 40,000 miles	40,000 to 60,000 miles	60,000 miles or more
3.0 petrol	£37,500	Too few for sale	Too few for sale	Too few for sale	Too few for sale

Only 1 of the 2018 BMW M3 cars for sale have the 2.3 petrol engine, too few to give a typical asking price.

Typical asking prices are of 2018 BMW M3 cars for sale on 9 November 2026, and are given only where at least 20 cars with a price are for sale.

2018 BMW M3 against other years

A 2017 BMW M3 car has a typical asking price of £34,500, as of 9 November 2026.

AskCar lists 805 used BMW M3 across the UK, from 472 dealerships.

As of 9 November 2026, AskCar lists 584,619 cars and vans from 12,676 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.

2018 BMW M3 cars for sale now, page 2 of 2

This page lists 2018 BMW M3 cars not picked out on page 1, cheapest first.

The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 752 priced BMW M3 adverts on AskCar as of 9 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2018 BMW M3.

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 1 car whose advertised mileage is lower than the mileage recorded at its last MOT test.

2018 BMW M3 3.0, automatic, petrol, saloon, 4 doors, black. Mileage: 51,694 miles. Price: £36,995, unchanged since AskCar first saw it on 23 October 2026, 17 days ago. Fair price: £61 (under 1%) under the AskCar estimate of £37,056. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 25 September 2027. Dealer: Merlin Performance in Poole. AskCar page: https://askcar.co.uk/car/bmw-m3-2018-92f5a6c986be
2018 BMW M3 3.0 Competition, 443 bhp, automatic, petrol, saloon, 4 doors, blue. Mileage: 57,000 miles. Price: £38,495, reduced by £1,405 from £39,900 since AskCar first saw it on 19 July 2026, 113 days ago. Fair price: £2,039 (5%) over the AskCar estimate of £36,456. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 5 December 2026. Dealer: Carderi Motors in Wembley. AskCar page: https://askcar.co.uk/car/bmw-m3-2018-c7aa6f9716ed

2018 BMW M3 prices